WEBVTT

657bbe8b-2686-4465-ac8b-0602478b5742/264-0
00:00:17.364 --> 00:00:18.184
<v Glasgow, Margaret E>I met Andres in the finals
months of my Ph.D. at the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/264-1
00:00:18.184 --> 00:00:19.112
<v Glasgow, Margaret E>University of New Mexico when he
was starting his post doc.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/264-2
00:00:19.112 --> 00:00:20.040
<v Glasgow, Margaret E>Something I really appreciate
about him is that he comes to</v>

657bbe8b-2686-4465-ac8b-0602478b5742/264-3
00:00:20.040 --> 00:00:20.937
<v Glasgow, Margaret E>science with a very chill
and open approach and it rubs off on the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/264-4
00:00:20.937 --> 00:00:21.926
<v Glasgow, Margaret E>people around him.  I remember
him often stopping by the office</v>

657bbe8b-2686-4465-ac8b-0602478b5742/264-5
00:00:21.926 --> 00:00:22.854
<v Glasgow, Margaret E>full of stressed out graduate
students, and he was so good </v>

657bbe8b-2686-4465-ac8b-0602478b5742/287-0
00:00:22.864 --> 00:00:26.723
<v Glasgow, Margaret E>at just lightning the
atmosphere in the room. So back</v>

657bbe8b-2686-4465-ac8b-0602478b5742/287-1
00:00:26.723 --> 00:00:27.424
<v Glasgow, Margaret E>to Andres.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/331-0
00:00:27.434 --> 00:00:30.994
<v Glasgow, Margaret E>He received a bachelors in
physics from the University of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/331-1
00:00:30.994 --> 00:00:34.922
<v Glasgow, Margaret E>Los Andes in Colombia in 2014,
and then he jumped into a PhD at</v>

657bbe8b-2686-4465-ac8b-0602478b5742/331-2
00:00:34.922 --> 00:00:38.604
<v Glasgow, Margaret E>McGill University in Montreal
where he focused on different</v>

657bbe8b-2686-4465-ac8b-0602478b5742/331-3
00:00:38.604 --> 00:00:41.734
<v Glasgow, Margaret E>aspects of understanding human
induced seismicity.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/380-0
00:00:43.184 --> 00:00:46.243
<v Glasgow, Margaret E>This included a stint in Germany
where he investigated</v>

657bbe8b-2686-4465-ac8b-0602478b5742/380-1
00:00:46.243 --> 00:00:49.914
<v Glasgow, Margaret E>earthquakes associated with coal
mines. After he received his PhD</v>

657bbe8b-2686-4465-ac8b-0602478b5742/380-2
00:00:49.914 --> 00:00:53.418
<v Glasgow, Margaret E>in 2020, he accepted a postdoc
at the University of Strasbourg</v>

657bbe8b-2686-4465-ac8b-0602478b5742/380-3
00:00:53.418 --> 00:00:56.254
<v Glasgow, Margaret E>in France, where he worked on
earthquake location </v>

657bbe8b-2686-4465-ac8b-0602478b5742/399-0
00:00:56.264 --> 00:00:59.911
<v Glasgow, Margaret E>uncertainty. He is now a postdoc
at the University of New Mexico,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/399-1
00:00:59.911 --> 00:01:02.674
<v Glasgow, Margaret E>where he's tackling some very
interesting topics.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/426-0
00:01:02.924 --> 00:01:07.227
<v Glasgow, Margaret E>And just to highlight a few of
these, he used an ambient noise</v>

657bbe8b-2686-4465-ac8b-0602478b5742/426-1
00:01:07.227 --> 00:01:10.574
<v Glasgow, Margaret E>method with DAS data to track
sea ice in Alaska.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/452-0
00:01:11.024 --> 00:01:13.821
<v Glasgow, Margaret E>I think this project helps
demonstrate his breath as a</v>

657bbe8b-2686-4465-ac8b-0602478b5742/452-1
00:01:13.821 --> 00:01:16.262
<v Glasgow, Margaret E>scientist, and it's just
generally a super cool</v>

657bbe8b-2686-4465-ac8b-0602478b5742/452-2
00:01:16.262 --> 00:01:17.584
<v Glasgow, Margaret E>application of seismology.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/487-0
00:01:17.964 --> 00:01:20.942
<v Glasgow, Margaret E>And then the other project I
wanted to highlight is the one</v>

657bbe8b-2686-4465-ac8b-0602478b5742/487-1
00:01:20.942 --> 00:01:23.969
<v Glasgow, Margaret E>that he'll be presenting on
today, which is about building a</v>

657bbe8b-2686-4465-ac8b-0602478b5742/487-2
00:01:23.969 --> 00:01:26.698
<v Glasgow, Margaret E>continent wide and multidecadal
earthquake catalog for</v>

657bbe8b-2686-4465-ac8b-0602478b5742/487-3
00:01:26.698 --> 00:01:27.244
<v Glasgow, Margaret E>Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/514-0
00:01:27.574 --> 00:01:31.819
<v Glasgow, Margaret E>This is a big problem to tackle
and for a place that is often</v>

657bbe8b-2686-4465-ac8b-0602478b5742/514-1
00:01:31.819 --> 00:01:34.284
<v Glasgow, Margaret E>overlooked, so kudos to you
Andres </v>

657bbe8b-2686-4465-ac8b-0602478b5742/532-0
00:01:34.294 --> 00:01:37.203
<v Glasgow, Margaret E>and with that, I look forward to
hearing more about the project</v>

657bbe8b-2686-4465-ac8b-0602478b5742/532-1
00:01:37.203 --> 00:01:38.794
<v Glasgow, Margaret E>and I'll give the floor to
Andres.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/536-0
00:01:42.144 --> 00:01:42.574
<v Andres Pena Castro>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/544-0
00:01:42.974 --> 00:01:44.014
<v Andres Pena Castro>Good morning, everyone.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/549-0
00:01:44.024 --> 00:01:45.854
<v Andres Pena Castro>Can everybody hear me alright?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/551-0
00:01:46.884 --> 00:01:47.334
<v Andres Pena Castro>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/554-0
00:01:47.554 --> 00:01:48.174
<v Andres Pena Castro>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/559-0
00:01:48.444 --> 00:01:49.544
<v Andres Pena Castro>So good morning everyone.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/567-0
00:01:49.554 --> 00:01:51.274
<v Andres Pena Castro>Thanks for the introduction,
Margaret.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/592-0
00:01:51.604 --> 00:01:55.453
<v Andres Pena Castro>So I'm Andreas and I just want
to mention that this is a large</v>

657bbe8b-2686-4465-ac8b-0602478b5742/592-1
00:01:55.453 --> 00:01:58.874
<v Andres Pena Castro>collaboration between people at
different institutions.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/600-0
00:01:59.604 --> 00:02:01.614
<v Andres Pena Castro>Brandon Schmandt here at
University of New Mexico, .</v>

657bbe8b-2686-4465-ac8b-0602478b5742/624-0
00:02:01.624 --> 00:02:05.259
<v Andres Pena Castro>Jenny Nakai at the USGS; Rick
Aster at Colorado State</v>

657bbe8b-2686-4465-ac8b-0602478b5742/624-1
00:02:05.259 --> 00:02:08.124
<v Andres Pena Castro>University and Julian Chapel at
YouTube.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/646-0
00:02:08.424 --> 00:02:12.585
<v Andres Pena Castro>And today I will be talking
about seismicity of Antarctica</v>

657bbe8b-2686-4465-ac8b-0602478b5742/646-1
00:02:12.585 --> 00:02:15.124
<v Andres Pena Castro>and that's the single
question </v>

657bbe8b-2686-4465-ac8b-0602478b5742/664-0
00:02:15.134 --> 00:02:19.364
<v Andres Pena Castro>I'm gonna try to answer today.
[how do I move the slides. </v>

657bbe8b-2686-4465-ac8b-0602478b5742/684-0
00:02:19.374 --> 00:02:23.594
<v Andres Pena Castro>Ohh yeah, now I can see it.] Is how
seismically active is the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/684-1
00:02:23.594 --> 00:02:25.024
<v Andres Pena Castro>Antarctic continent.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/695-0
00:02:25.034 --> 00:02:27.004
<v Andres Pena Castro>That's the whole question of my
talk.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/711-0
00:02:27.094 --> 00:02:30.941
<v Andres Pena Castro>But before I start doing that, I
want to give you an idea of how</v>

657bbe8b-2686-4465-ac8b-0602478b5742/711-1
00:02:30.941 --> 00:02:32.124
<v Andres Pena Castro>large is Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/726-0
00:02:32.134 --> 00:02:35.164
<v Andres Pena Castro>So it's usually divided between
the east and the West.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/781-0
00:02:35.634 --> 00:02:39.945
<v Andres Pena Castro>Here on the map on the right
figure, I'm showing you the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/781-1
00:02:39.945 --> 00:02:44.482
<v Andres Pena Castro>permanent seismic stations in
Antarctica and I put a circle</v>

657bbe8b-2686-4465-ac8b-0602478b5742/781-2
00:02:44.482 --> 00:02:49.096
<v Andres Pena Castro>between the seismic station at
the South Pole to the closest</v>

657bbe8b-2686-4465-ac8b-0602478b5742/781-3
00:02:49.096 --> 00:02:53.784
<v Andres Pena Castro>station to that point and that
it's a distance of 12 degrees.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/848-0
00:02:54.654 --> 00:02:59.209
<v Andres Pena Castro>And just to give you an idea of
the size of the continent on the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/848-1
00:02:59.209 --> 00:03:03.693
<v Andres Pena Castro>left, I just put the same circle
center in Denver in the United</v>

657bbe8b-2686-4465-ac8b-0602478b5742/848-2
00:03:03.693 --> 00:03:08.038
<v Andres Pena Castro>States and if I count how many
earthquakes are according with</v>

657bbe8b-2686-4465-ac8b-0602478b5742/848-3
00:03:08.038 --> 00:03:12.382
<v Andres Pena Castro>the USGS in the area on the left
or on that circle, there are</v>

657bbe8b-2686-4465-ac8b-0602478b5742/848-4
00:03:12.382 --> 00:03:14.484
<v Andres Pena Castro>more than 800,000 earthquakes,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/857-0
00:03:14.494 --> 00:03:16.544
<v Andres Pena Castro>and I just put those earthquakes
in there.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/890-0
00:03:17.074 --> 00:03:21.272
<v Andres Pena Castro>Now if I go through the same
exercise and I look at how many</v>

657bbe8b-2686-4465-ac8b-0602478b5742/890-1
00:03:21.272 --> 00:03:25.401
<v Andres Pena Castro>earthquakes are reported by the
USGS in Antarctica in that</v>

657bbe8b-2686-4465-ac8b-0602478b5742/890-2
00:03:25.401 --> 00:03:28.084
<v Andres Pena Castro>circle, the difference is quite
large.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/901-0
00:03:28.094 --> 00:03:31.144
<v Andres Pena Castro>There are only 6 events for that
data set, </v>

657bbe8b-2686-4465-ac8b-0602478b5742/925-0
00:03:31.154 --> 00:03:36.702
<v Andres Pena Castro>I took it for the last 
20 years in both plots,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/925-1
00:03:36.702 --> 00:03:39.224
<v Andres Pena Castro>and even if I look at other </v>

657bbe8b-2686-4465-ac8b-0602478b5742/945-0
00:03:40.634 --> 00:03:44.144
<v Andres Pena Castro>seismological agencies such as
the International Seismological</v>

657bbe8b-2686-4465-ac8b-0602478b5742/945-1
00:03:44.144 --> 00:03:46.484
<v Andres Pena Castro>Center, that number does not
change much.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/962-0
00:03:46.494 --> 00:03:50.084
<v Andres Pena Castro>It's probably just a difference
of 10 events instead of 6.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/972-0
00:03:50.334 --> 00:03:55.534
<v Andres Pena Castro>So then why is there such a
small number of events</v>

657bbe8b-2686-4465-ac8b-0602478b5742/983-0
00:03:56.374 --> 00:03:59.744
<v Andres Pena Castro>on the Antarctic
continent.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/994-0
00:03:59.784 --> 00:04:01.844
<v Andres Pena Castro>So I come up with a couple of
reasons for that.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1001-0
00:04:02.854 --> 00:04:04.334
<v Andres Pena Castro>The first one is </v>

657bbe8b-2686-4465-ac8b-0602478b5742/1030-0
00:04:04.344 --> 00:04:08.065
<v Andres Pena Castro>maybe it's that there's not
insufficient strain rate or</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1030-1
00:04:08.065 --> 00:04:11.984
<v Andres Pena Castro>there is not enough stress that
accumulates on the faults.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1064-0
00:04:11.994 --> 00:04:14.925
<v Andres Pena Castro>If there are any faults in the
Antarctic continent, so if</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1064-1
00:04:14.925 --> 00:04:18.109
<v Andres Pena Castro>there's another stress then the
faults cannot slip and cannot</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1064-2
00:04:18.109 --> 00:04:19.574
<v Andres Pena Castro>generate any seismic signals.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1072-0
00:04:19.584 --> 00:04:21.044
<v Andres Pena Castro>Therefore, we cannot detect
anything.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1089-0
00:04:22.014 --> 00:04:25.908
<v Andres Pena Castro>The second reason might be
related to the instrumentation</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1089-1
00:04:25.908 --> 00:04:26.724
<v Andres Pena Castro>that we have.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1128-0
00:04:26.734 --> 00:04:30.451
<v Andres Pena Castro>If you look at the map on the
right, there are only around 10</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1128-1
00:04:30.451 --> 00:04:34.167
<v Andres Pena Castro>or 11 permanent sizes because
station, so it's really hard to</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1128-2
00:04:34.167 --> 00:04:37.524
<v Andres Pena Castro>detect any event with that 
interstation distance.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1147-0
00:04:37.534 --> 00:04:41.256
<v Andres Pena Castro>So maybe that's another reason
why we have such a small number</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1147-1
00:04:41.256 --> 00:04:42.674
<v Andres Pena Castro>of events in Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1206-0
00:04:45.144 --> 00:04:49.859
<v Andres Pena Castro>The only reason that maybe we
don't see many events is that we</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1206-1
00:04:49.859 --> 00:04:54.275
<v Andres Pena Castro>are still using, although
certain techniques such as LCLA,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1206-2
00:04:54.275 --> 00:04:59.140
<v Andres Pena Castro>A or energy detectors that they
are great to give us an idea how</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1206-3
00:04:59.140 --> 00:05:01.684
<v Andres Pena Castro>seismically optic can be a
place.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1227-0
00:05:01.694 --> 00:05:05.903
<v Andres Pena Castro>But nowadays there are better
techniques that we can apply to</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1227-1
00:05:05.903 --> 00:05:06.174
<v Andres Pena Castro>the.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1292-0
00:05:06.234 --> 00:05:09.743
<v Andres Pena Castro>The seismic stations are
available in Antarctica and I</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1292-1
00:05:09.743 --> 00:05:13.698
<v Andres Pena Castro>think my preferred reason is
that maybe we have a combination</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1292-2
00:05:13.698 --> 00:05:17.335
<v Andres Pena Castro>of all of the I is all the
reasons I mentioned before is</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1292-3
00:05:17.335 --> 00:05:21.354
<v Andres Pena Castro>probably we don't have enough
instruments that data techniques</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1292-4
00:05:21.354 --> 00:05:25.117
<v Andres Pena Castro>are not adequate or is not
enough stress in certain places</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1292-5
00:05:25.117 --> 00:05:26.074
<v Andres Pena Castro>to make faults </v>

657bbe8b-2686-4465-ac8b-0602478b5742/1299-0
00:05:26.344 --> 00:05:30.834
<v Andres Pena Castro>slip. Now for the rest of the
talk </v>

657bbe8b-2686-4465-ac8b-0602478b5742/1325-0
00:05:30.884 --> 00:05:35.221
<v Andres Pena Castro>I will have 4 main points, so
the first one is historical and</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1325-1
00:05:35.221 --> 00:05:37.994
<v Andres Pena Castro>the recent seismicity in
Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1334-0
00:05:38.274 --> 00:05:40.704
<v Andres Pena Castro>How we build a seismic event
catalog?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1344-0
00:05:40.744 --> 00:05:44.364
<v Andres Pena Castro>What are the preliminary
observations of that catalog?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1357-0
00:05:44.454 --> 00:05:47.454
<v Andres Pena Castro>What are the limitations of the
catalog and what </v>

657bbe8b-2686-4465-ac8b-0602478b5742/1367-0
00:05:47.814 --> 00:05:52.654
<v Andres Pena Castro>are the possible future
uses of that catalog?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1396-0
00:05:53.614 --> 00:05:57.917
<v Andres Pena Castro>So let me start with the
historical seismicity in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1396-1
00:05:57.917 --> 00:06:03.274
<v Andres Pena Castro>Antarctica or maybe I should say
historical assisting Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1417-0
00:06:03.564 --> 00:06:07.846
<v Andres Pena Castro>So there was not much on the
record in all the literature</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1417-1
00:06:07.846 --> 00:06:09.174
<v Andres Pena Castro>review that I did.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1424-0
00:06:09.284 --> 00:06:11.374
<v Andres Pena Castro>Actually I found quite the
opposite.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1450-0
00:06:11.384 --> 00:06:16.841
<v Andres Pena Castro>I found even some paper in 1967
by Evison that says that the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1450-1
00:06:16.841 --> 00:06:20.534
<v Andres Pena Castro>Antarctic continent must be
fully aseismic.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1494-0
00:06:20.604 --> 00:06:25.391
<v Andres Pena Castro>The reason that was
the thinking at that time was</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1494-1
00:06:25.391 --> 00:06:29.780
<v Andres Pena Castro>that in general the seismic
networks globally speaking</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1494-2
00:06:29.780 --> 00:06:34.726
<v Andres Pena Castro>available between the 20s until
the 60s have not reported any</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1494-3
00:06:34.726 --> 00:06:35.524
<v Andres Pena Castro>magnitude </v>

657bbe8b-2686-4465-ac8b-0602478b5742/1559-0
00:06:35.764 --> 00:06:39.841
<v Andres Pena Castro>more than 6,192.7 in Antarctica,
even though the Continental</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1559-1
00:06:39.841 --> 00:06:43.645
<v Andres Pena Castro>Cross in Antarctica is
relatively similar in thickness,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1559-2
00:06:43.645 --> 00:06:47.789
<v Andres Pena Castro>geological age, and geological
composition to our continuous</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1559-3
00:06:47.789 --> 00:06:51.661
<v Andres Pena Castro>that have relatively frequent
magnitudes 5's or even</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1559-4
00:06:51.661 --> 00:06:52.884
<v Andres Pena Castro>higher than M5,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1599-0
00:06:53.354 --> 00:06:57.250
<v Andres Pena Castro>and that leads also to other
scientists to propose that the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1599-1
00:06:57.250 --> 00:07:00.950
<v Andres Pena Castro>reason why the Antarctic
continent was fully aseismic is</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1599-2
00:07:00.950 --> 00:07:05.040
<v Andres Pena Castro>that the ice layer on top of it
was suppressing any earthquake</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1599-3
00:07:05.040 --> 00:07:05.624
<v Andres Pena Castro>activity.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1610-0
00:07:05.634 --> 00:07:06.394
<v Andres Pena Castro>And the reason for that</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1623-0
00:07:06.814 --> 00:07:11.239
<v Andres Pena Castro> is basically that the ice
layer on top of of the continent</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1623-1
00:07:11.239 --> 00:07:11.524
<v Andres Pena Castro>was</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1638-0
00:07:13.014 --> 00:07:15.044
<v Andres Pena Castro>changing the stress of the
states of the faults.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1691-0
00:07:15.054 --> 00:07:18.401
<v Andres Pena Castro>So here's the the whole
assumption here is that the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1691-1
00:07:18.401 --> 00:07:22.392
<v Andres Pena Castro>vertical stress corresponds to
the Sigma 3, and if you have a</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1691-2
00:07:22.392 --> 00:07:26.318
<v Andres Pena Castro>full and on top of that folder
is an ice sheet, then it will</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1691-3
00:07:26.318 --> 00:07:30.244
<v Andres Pena Castro>move the more circle farther
away from the failure envelope.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1722-0
00:07:30.374 --> 00:07:34.633
<v Andres Pena Castro>While if we have the same fault
without the ice sheet or the ice</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1722-1
00:07:34.633 --> 00:07:37.974
<v Andres Pena Castro>layer on top, they will be
closer to failures.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1750-0
00:07:37.984 --> 00:07:41.739
<v Andres Pena Castro>So that was one of the reasons
or one of the most accept the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1750-1
00:07:41.739 --> 00:07:45.431
<v Andres Pena Castro>reasons at the time to say that
the Antarctic continent was</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1750-2
00:07:45.431 --> 00:07:46.354
<v Andres Pena Castro>fully aseismic.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1771-0
00:07:46.924 --> 00:07:52.666
<v Andres Pena Castro>However, later in time in
1985, finally there was an</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1771-1
00:07:52.666 --> 00:07:56.254
<v Andres Pena Castro>earthquake reported in
Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1782-0
00:07:56.424 --> 00:07:59.014
<v Andres Pena Castro>so where this
happened.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1814-0
00:07:59.064 --> 00:08:03.615
<v Andres Pena Castro>This event happened in East
Antarctica, was detected by 9</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1814-1
00:08:03.615 --> 00:08:07.931
<v Andres Pena Castro>seismic stations, five of them
are located in </v>

657bbe8b-2686-4465-ac8b-0602478b5742/1814-2
00:08:07.931 --> 00:08:08.794
<v Andres Pena Castro>Antarctica and</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1850-0
00:08:08.804 --> 00:08:13.480
<v Andres Pena Castro>there were somewhere else. How
that looks like, so here's one the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1850-1
00:08:13.480 --> 00:08:17.702
<v Andres Pena Castro>sunbreaker of an array in
Australia for that event that</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1850-2
00:08:17.702 --> 00:08:18.984
<v Andres Pena Castro>occurred in 1982 </v>

657bbe8b-2686-4465-ac8b-0602478b5742/1922-0
00:08:18.994 --> 00:08:22.845
<v Andres Pena Castro>in November 4, this event had a
magnitude of body weight </v>

657bbe8b-2686-4465-ac8b-0602478b5742/1922-1
00:08:22.845 --> 00:08:27.466
<v Andres Pena Castro>magnitude of 4.5 and it was
detected by the ISC and this was</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1922-2
00:08:27.466 --> 00:08:32.240
<v Andres Pena Castro>the first compelling evidence
that the Antarctic continent is</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1922-3
00:08:32.240 --> 00:08:36.707
<v Andres Pena Castro>not fully aseismic it was
probably more to the fact that</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1922-4
00:08:36.707 --> 00:08:41.713
<v Andres Pena Castro>the seismicity rate is lower in
comparison with other continents.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1922-5
00:08:41.713 --> 00:08:43.484
<v Andres Pena Castro>And the following year </v>

657bbe8b-2686-4465-ac8b-0602478b5742/1947-0
00:08:43.494 --> 00:08:47.769
<v Andres Pena Castro>in 1986, I am A.Akoto
actually reported four more</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1947-1
00:08:47.769 --> 00:08:50.994
<v Andres Pena Castro>events with magnitudes of 4.5
and 5.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1997-0
00:08:51.214 --> 00:08:55.637
<v Andres Pena Castro>These two stars represent the
locations of those four events,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1997-1
00:08:55.637 --> 00:09:00.273
<v Andres Pena Castro>and it was detected 2 km
in down from this place, called</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1997-2
00:09:00.273 --> 00:09:04.624
<v Andres Pena Castro>Wakes Wildland and this just
added more evidence to the fact</v>

657bbe8b-2686-4465-ac8b-0602478b5742/1997-3
00:09:04.624 --> 00:09:07.834
<v Andres Pena Castro>that Antarctica is not
completely aseismic.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2007-0
00:09:07.884 --> 00:09:09.324
<v Andres Pena Castro>There is some seismicity,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2024-0
00:09:09.494 --> 00:09:14.024
<v Andres Pena Castro>but it's not as active as other
places in the world. Now </v>

657bbe8b-2686-4465-ac8b-0602478b5742/2037-0
00:09:14.114 --> 00:09:18.124
<v Andres Pena Castro>that's the history until 1986.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2055-0
00:09:18.414 --> 00:09:22.758
<v Andres Pena Castro>I'm gonna skip a lot of decades
of researching of seismicity in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2055-1
00:09:22.758 --> 00:09:23.504
<v Andres Pena Castro>Antarctica and </v>

657bbe8b-2686-4465-ac8b-0602478b5742/2068-0
00:09:23.514 --> 00:09:27.504
<v Andres Pena Castro>I'm going to move on into 2018.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2105-0
00:09:27.774 --> 00:09:33.237
<v Andres Pena Castro>So nowadays, fortunately, we
have different, arrays.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2105-1
00:09:33.237 --> 00:09:38.364
<v Andres Pena Castro>some scientists sometimes are
able to go to different places</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2105-2
00:09:38.364 --> 00:09:42.902
<v Andres Pena Castro>in Antarctica and deploy some
temporary</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2105-3
00:09:42.902 --> 00:09:43.994
<v Andres Pena Castro>seismometers.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2143-0
00:09:44.104 --> 00:09:48.000
<v Andres Pena Castro>So this is the case of Lough et al.,
in 2018, where they have a</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2143-1
00:09:48.000 --> 00:09:52.220
<v Andres Pena Castro>specific array called the camper
set Antarctic Mountain Size Big</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2143-2
00:09:52.220 --> 00:09:52.934
<v Andres Pena Castro>Experiment.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2176-0
00:09:53.144 --> 00:09:57.514
<v Andres Pena Castro>I was deployed around 2009 and
with that seismic array they</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2176-1
00:09:57.514 --> 00:10:01.520
<v Andres Pena Castro>were able to detect 27
intraplate tectonic earthquakes</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2176-2
00:10:01.520 --> 00:10:02.904
<v Andres Pena Castro>in East Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2206-0
00:10:03.894 --> 00:10:08.443
<v Andres Pena Castro>The magnitude of those events,
local magnitude is between 2 and</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2206-1
00:10:08.443 --> 00:10:12.564
<v Andres Pena Castro>3.5, and this is an example of
how that event looks like.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2220-0
00:10:13.154 --> 00:10:15.354
<v Andres Pena Castro>One of those events is
vertical </v>

657bbe8b-2686-4465-ac8b-0602478b5742/2220-1
00:10:15.354 --> 00:10:15.954
<v Andres Pena Castro>seismograph.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2264-0
00:10:15.964 --> 00:10:22.473
<v Andres Pena Castro>Those events in a similar way in
the western side of Antarctica,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2264-1
00:10:22.473 --> 00:10:28.580
<v Andres Pena Castro>Erica Lucas in 2021, took some
temporary arrays deploying in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2264-2
00:10:28.580 --> 00:10:31.684
<v Andres Pena Castro>the western side of Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2325-0
00:10:31.854 --> 00:10:36.088
<v Andres Pena Castro>They were able to detect 117
Seismic events between 2015 and</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2325-1
00:10:36.088 --> 00:10:40.185
<v Andres Pena Castro>2017 with this local magnitude
range, and they found a</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2325-2
00:10:40.185 --> 00:10:44.145
<v Andres Pena Castro>couple of interesting signals
with different origins from</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2325-3
00:10:44.145 --> 00:10:47.969
<v Andres Pena Castro>glacial origins, tectonic
origins, or even some of them</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2325-4
00:10:47.969 --> 00:10:49.334
<v Andres Pena Castro>relate to volcanism.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2355-0
00:10:49.374 --> 00:10:53.540
<v Andres Pena Castro>So that's great that we have
some better idea of this </v>

657bbe8b-2686-4465-ac8b-0602478b5742/2355-1
00:10:53.540 --> 00:10:56.534
<v Andres Pena Castro>seismicity in Antarctica with this
temporary array.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2380-0
00:10:56.604 --> 00:11:00.497
<v Andres Pena Castro>However, all these different
studies have not applied any</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2380-1
00:11:00.497 --> 00:11:04.523
<v Andres Pena Castro>uniform techniques to analyze
all the data sets that are</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2380-2
00:11:04.523 --> 00:11:05.194
<v Andres Pena Castro>available.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2398-0
00:11:05.204 --> 00:11:08.919
<v Andres Pena Castro>In general, there is no long
term and uniformly processed</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2398-1
00:11:08.919 --> 00:11:11.224
<v Andres Pena Castro>seismic catalog available for
The</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2417-0
00:11:11.234 --> 00:11:15.335
<v Andres Pena Castro>Antarctic continents that make full use
of these different data sources</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2417-1
00:11:15.335 --> 00:11:17.834
<v Andres Pena Castro>available in Antarctica, so I'm
going to .</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2422-0
00:11:18.654 --> 00:11:19.504
<v Andres Pena Castro>I'm going do that.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2433-0
00:11:19.514 --> 00:11:23.964
<v Andres Pena Castro>I'm going to create a long-term
catalog for entire continent.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2449-0
00:11:24.034 --> 00:11:28.935
<v Andres Pena Castro>I'm going to process in the most
uniform way that we can have and</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2449-1
00:11:28.935 --> 00:11:30.024
<v Andres Pena Castro>represent you </v>

657bbe8b-2686-4465-ac8b-0602478b5742/2457-0
00:11:30.034 --> 00:11:32.924
<v Andres Pena Castro>first, what is available in
Antarctica?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2492-0
00:11:33.974 --> 00:11:37.901
<v Andres Pena Castro>So let's start building the
size, because in catalog by</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2492-1
00:11:37.901 --> 00:11:42.388
<v Andres Pena Castro>looking what are the data sets
available. First, I already showed you</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2492-2
00:11:42.388 --> 00:11:46.314
<v Andres Pena Castro>in the bottom right the most
permanent seismic station.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2502-0
00:11:46.324 --> 00:11:48.964
<v Andres Pena Castro>In the right, there only like 10
or 11 stations.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2509-0
00:11:49.354 --> 00:11:52.484
<v Andres Pena Castro>However, there are multiple
temporary arrays.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2532-0
00:11:53.074 --> 00:11:56.934
<v Andres Pena Castro>We decided to take the time
window starting from January</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2532-1
00:11:56.934 --> 00:11:59.484
<v Andres Pena Castro>2000 until the end of December
2020.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2550-0
00:11:59.834 --> 00:12:04.090
<v Andres Pena Castro>The figure on the left show the
seismic station that has been</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2550-1
00:12:04.090 --> 00:12:05.874
<v Andres Pena Castro>deployed every year.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2587-0
00:12:05.884 --> 00:12:09.435
<v Andres Pena Castro>So you will see how in some
cases we have the specific</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2587-1
00:12:09.435 --> 00:12:13.566
<v Andres Pena Castro>regions with a lot of stations
and then a couple of years later</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2587-2
00:12:13.566 --> 00:12:15.954
<v Andres Pena Castro>maybe there is nothing on that
spot.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2647-0
00:12:16.024 --> 00:12:20.923
<v Andres Pena Castro>So especially it's highly
nonuniform the amount of seismic</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2647-1
00:12:20.923 --> 00:12:25.988
<v Andres Pena Castro>stations that we have and the
other thing that I want you to</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2647-2
00:12:25.988 --> 00:12:31.219
<v Andres Pena Castro>keep in mind is that a lot of
these stations are highly viable in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2647-3
00:12:31.219 --> 00:12:35.204
<v Andres Pena Castro>terms of how long they have been
in Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2681-0
00:12:35.434 --> 00:12:39.406
<v Andres Pena Castro>Some of them were deployed for a
few hours, some of them for a</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2681-1
00:12:39.406 --> 00:12:43.442
<v Andres Pena Castro>few days, some of them just for
a few months or just the summer</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2681-2
00:12:43.442 --> 00:12:44.324
<v Andres Pena Castro>in Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2699-0
00:12:44.334 --> 00:12:47.546
<v Andres Pena Castro>And summer won't have leave for
more long, longer periods of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2699-1
00:12:47.546 --> 00:12:48.914
<v Andres Pena Castro>time, such as a few years.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2723-0
00:12:51.954 --> 00:12:57.299
<v Andres Pena Castro>OK, so we're gonna use
everything that we can from this</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2723-1
00:12:57.299 --> 00:13:00.544
<v Andres Pena Castro>map from almost 21 years of
data.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2736-0
00:13:01.874 --> 00:13:03.904
<v Andres Pena Castro>So we have to obtain all the
data.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2759-0
00:13:03.914 --> 00:13:07.006
<v Andres Pena Castro>We don't loaded everything you
minutes seats and all the metadata</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2759-1
00:13:07.006 --> 00:13:07.654
<v Andres Pena Castro>that we have.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2780-0
00:13:08.634 --> 00:13:13.373
<v Andres Pena Castro>What goes into our workflow so
we include short period,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2780-1
00:13:13.373 --> 00:13:16.504
<v Andres Pena Castro>seismometer, extremely short
period.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2791-0
00:13:16.514 --> 00:13:19.844
<v Andres Pena Castro>We also have broadband
seismometers and high broadband.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2821-0
00:13:20.354 --> 00:13:24.559
<v Andres Pena Castro>What we did not include in our
workflow in our data set is if</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2821-1
00:13:24.559 --> 00:13:28.424
<v Andres Pena Castro>it's private, we don't have it,
we're not gonna process </v>

657bbe8b-2686-4465-ac8b-0602478b5742/2837-0
00:13:28.434 --> 00:13:30.934
<v Andres Pena Castro>and we did not request anyone
for any private data.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2852-0
00:13:31.794 --> 00:13:36.884
<v Andres Pena Castro>Other data sets are now
being installed in Antartica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2859-0
00:13:36.934 --> 00:13:39.134
<v Andres Pena Castro>Our fiber optic cables are used
with a unit </v>

657bbe8b-2686-4465-ac8b-0602478b5742/2882-0
00:13:41.874 --> 00:13:45.361
<v Andres Pena Castro>that shoots a
laser and that you can record</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2882-1
00:13:45.361 --> 00:13:48.374
<v Andres Pena Castro>data using a distributed
acoustic sensing setting?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2905-0
00:13:48.804 --> 00:13:51.585
<v Andres Pena Castro>I know there are two right now,
one of the South Pole and</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2905-1
00:13:51.585 --> 00:13:53.214
<v Andres Pena Castro>somewhere one in West
Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2932-0
00:13:53.504 --> 00:13:56.766
<v Andres Pena Castro>That data set is also not
included in our case, and there</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2932-1
00:13:56.766 --> 00:13:59.915
<v Andres Pena Castro>are also a couple of,
infrasound or microphones or</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2932-2
00:13:59.915 --> 00:14:00.814
<v Andres Pena Castro>cameras as well.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2952-0
00:14:01.274 --> 00:14:06.074
<v Andres Pena Castro>And some volcanoes so that
data sets are also not included</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2952-1
00:14:06.074 --> 00:14:06.374
<v Andres Pena Castro>Okay.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2989-0
00:14:07.274 --> 00:14:11.397
<v Andres Pena Castro>Now how after we obtain all
the data for those that I</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2989-1
00:14:11.397 --> 00:14:15.737
<v Andres Pena Castro>mentioned in the left side,
we're going to process all the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/2989-2
00:14:15.737 --> 00:14:17.834
<v Andres Pena Castro>data to generate phase pick.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3006-0
00:14:17.844 --> 00:14:21.997
<v Andres Pena Castro>How we do that? We use
this toolbox for machine</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3006-1
00:14:21.997 --> 00:14:22.664
<v Andres Pena Castro>learning</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3024-0
00:14:22.674 --> 00:14:27.052
<v Andres Pena Castro>seismology developed by
Munchmeyer and Wollam et al. in 2022,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3024-1
00:14:27.052 --> 00:14:28.664
<v Andres Pena Castro>it's called SeisBench.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3041-0
00:14:28.754 --> 00:14:32.859
<v Andres Pena Castro>It contains multiple phase
pickers and we decide to use</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3041-1
00:14:32.859 --> 00:14:34.544
<v Andres Pena Castro>earthquake transformer </v>

657bbe8b-2686-4465-ac8b-0602478b5742/3070-0
00:14:34.554 --> 00:14:38.647
<v Andres Pena Castro>given that it has a a great
performance in comparison with</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3070-1
00:14:38.647 --> 00:14:42.878
<v Andres Pena Castro>other pickers and just to give
you also an idea of what is</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3070-2
00:14:42.878 --> 00:14:44.404
<v Andres Pena Castro>the training data set.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3091-0
00:14:44.414 --> 00:14:48.321
<v Andres Pena Castro>So you can train EQT 
transformer with wave forms</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3091-1
00:14:48.321 --> 00:14:51.764
<v Andres Pena Castro>from California, from Italy,
from different places.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3125-0
00:14:51.774 --> 00:14:55.289
<v Andres Pena Castro>But here we use the data
set from Stanford earthquake</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3125-1
00:14:55.289 --> 00:14:58.630
<v Andres Pena Castro>data set called STEA'D that has
millions of waveforms from</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3125-2
00:14:58.630 --> 00:15:00.934
<v Andres Pena Castro>different earthquakes around the
world.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3168-0
00:15:01.774 --> 00:15:05.965
<v Andres Pena Castro>The distance from the
earthquakes to the stations are</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3168-1
00:15:05.965 --> 00:15:11.086
<v Andres Pena Castro>generally between 0 and 3
degrees, but the majority of the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3168-2
00:15:11.086 --> 00:15:16.052
<v Andres Pena Castro>data set comes from distances of
1 degree or 100 km for</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3168-3
00:15:16.052 --> 00:15:17.604
<v Andres Pena Castro>the magnitude range.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3200-0
00:15:17.774 --> 00:15:22.559
<v Andres Pena Castro>The magnitude range of STEAD is
between 0 and 7, but the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3200-1
00:15:22.559 --> 00:15:27.195
<v Andres Pena Castro>majority is between 0 and
magnitude 3. Okay, very important</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3200-2
00:15:27.195 --> 00:15:29.064
<v Andres Pena Castro>point to make about this </v>

657bbe8b-2686-4465-ac8b-0602478b5742/3223-0
00:15:29.114 --> 00:15:33.802
<v Andres Pena Castro>data set that we use to train
earthquake transformer is that</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3223-1
00:15:33.802 --> 00:15:37.464
<v Andres Pena Castro>STEAD has no earthquakes
located in Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3270-0
00:15:37.634 --> 00:15:41.969
<v Andres Pena Castro>So here in this map you can see
the distribution of earthquakes</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3270-1
00:15:41.969 --> 00:15:46.235
<v Andres Pena Castro>in this data set you will see
some of them are from subduction</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3270-2
00:15:46.235 --> 00:15:50.299
<v Andres Pena Castro>zones from volcanic regions from
intraplate seismicity and</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3270-3
00:15:50.299 --> 00:15:51.924
<v Andres Pena Castro>Europe and other places.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3296-0
00:15:52.494 --> 00:15:56.283
<v Andres Pena Castro>And also the important point is
that there are no stations that</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3296-1
00:15:56.283 --> 00:15:57.644
<v Andres Pena Castro>record any earthquakes.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3316-0
00:15:58.094 --> 00:16:00.632
<v Andres Pena Castro>The stations in
Antarctica that recorded those</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3316-1
00:16:00.632 --> 00:16:02.934
<v Andres Pena Castro>circles that I showed you in the
previous slide.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3329-0
00:16:04.004 --> 00:16:09.032
<v Andres Pena Castro>Now, after we generate millions
of phase arrivals PNS waves </v>

657bbe8b-2686-4465-ac8b-0602478b5742/3329-1
00:16:09.032 --> 00:16:09.774
<v Andres Pena Castro>arrivals.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3336-0
00:16:10.084 --> 00:16:11.614
<v Andres Pena Castro>We're going to group them together.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3346-0
00:16:11.704 --> 00:16:13.784
<v Andres Pena Castro>Try to see if they have a common
origin.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3417-0
00:16:14.044 --> 00:16:18.262
<v Andres Pena Castro>We use this software called
Rapid Earthquake Association and</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3417-1
00:16:18.262 --> 00:16:22.687
<v Andres Pena Castro>Locations stands for REAL and the
idea is that the asset of P-</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3417-2
00:16:22.687 --> 00:16:26.974
<v Andres Pena Castro>wave arrivals and a set of S-
wave arrival must follow certain</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3417-3
00:16:26.974 --> 00:16:30.708
<v Andres Pena Castro>travel time curbs from a
hypocenter and if they match</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3417-4
00:16:30.708 --> 00:16:34.580
<v Andres Pena Castro>certain conditions, we can
declare those set of piglets</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3417-5
00:16:34.580 --> 00:16:36.654
<v Andres Pena Castro>arrivals from the same source.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3425-0
00:16:37.374 --> 00:16:40.904
<v Andres Pena Castro>For this step we require a
velocity model.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3440-0
00:16:40.914 --> 00:16:44.924
<v Andres Pena Castro>We're going to use the global
velocity model called at ak-135.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3505-0
00:16:45.354 --> 00:16:49.608
<v Andres Pena Castro>We use this one because we are
covering an entire continent and</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3505-1
00:16:49.608 --> 00:16:53.396
<v Andres Pena Castro>the other thing that we
requirement for for this part of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3505-2
00:16:53.396 --> 00:16:57.450
<v Andres Pena Castro>the software is that we need at
least 6 phases to declare an</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3505-3
00:16:57.450 --> 00:17:01.039
<v Andres Pena Castro>event and out of those 6
phases, 2 stations need to</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3505-4
00:17:01.039 --> 00:17:03.764
<v Andres Pena Castro>record hold a P- and an S-wave
arrival.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3565-0
00:17:09.804 --> 00:17:14.304
<v Andres Pena Castro>[Okay.] Now after we have some
preliminary location from this</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3565-1
00:17:14.304 --> 00:17:19.192
<v Andres Pena Castro>software, we're going to improve
the locations by using another</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3565-2
00:17:19.192 --> 00:17:23.846
<v Andres Pena Castro>one called nonlinear location
with estimates the hypocenter</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3565-3
00:17:23.846 --> 00:17:28.734
<v Andres Pena Castro>using official efficient global
sampling algorithm to obtain </v>

657bbe8b-2686-4465-ac8b-0602478b5742/3565-4
00:17:28.734 --> 00:17:33.854
<v Andres Pena Castro>probability density function for
an absolute hypocenter location.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3581-0
00:17:33.864 --> 00:17:37.680
<v Andres Pena Castro>We use of course, the same
velocity model, and we obtain</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3581-1
00:17:37.680 --> 00:17:38.884
<v Andres Pena Castro>some locations.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3632-0
00:17:39.314 --> 00:17:44.336
<v Andres Pena Castro>However, when we look at some of
the residuals and some</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3632-1
00:17:44.336 --> 00:17:49.123
<v Andres Pena Castro>of the waveforms that these
step, we noticed that some event</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3632-2
00:17:49.123 --> 00:17:53.910
<v Andres Pena Castro>locations contains picks with
large residuals in the location</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3632-3
00:17:53.910 --> 00:17:54.694
<v Andres Pena Castro>algorithm.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3651-0
00:17:54.824 --> 00:17:58.109
<v Andres Pena Castro>And when we look at the
waveforms, a lot of those ones</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3651-1
00:17:58.109 --> 00:18:01.214
<v Andres Pena Castro>are false peaks or they were
incorrect association.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3657-0
00:18:02.044 --> 00:18:03.274
<v Andres Pena Castro>What do I mean with that?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3682-0
00:18:03.284 --> 00:18:06.344
<v Andres Pena Castro>So I'm just gonna show you a
figure of one of those cases</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3682-1
00:18:06.344 --> 00:18:08.454
<v Andres Pena Castro>where we have an incorrect
association.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3695-0
00:18:08.664 --> 00:18:10.474
<v Andres Pena Castro>So where in Antarctica we are.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3722-0
00:18:10.484 --> 00:18:13.904
<v Andres Pena Castro>So if you look at at the red
Polygon indicates the region I'm</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3722-1
00:18:13.904 --> 00:18:17.378
<v Andres Pena Castro>submitting in the bigger
map, this place is called Pine</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3722-2
00:18:17.378 --> 00:18:17.764
<v Andres Pena Castro>Island Glacier.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3770-0
00:18:17.894 --> 00:18:21.545
<v Andres Pena Castro>There are a couple
of stations here called PIG,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3770-1
00:18:21.545 --> 00:18:25.501
<v Andres Pena Castro>because that's the acronym they
use and there is some seismicity</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3770-2
00:18:25.501 --> 00:18:29.334
<v Andres Pena Castro>here detected by our catalog and
here I put in the Red Star.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3803-0
00:18:29.874 --> 00:18:33.205
<v Andres Pena Castro>I put the location of the
events that observed it with the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3803-1
00:18:33.205 --> 00:18:36.694
<v Andres Pena Castro>seismograms on the right you can
see the vertical components, the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3803-2
00:18:36.694 --> 00:18:38.914
<v Andres Pena Castro>east components and the north
components.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3832-0
00:18:39.504 --> 00:18:43.201
<v Andres Pena Castro>I'm going to highlight the P-wave
arrivals here with this orange</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3832-1
00:18:43.201 --> 00:18:46.540
<v Andres Pena Castro>line and you can see really
clear P-wave arrivals and</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3832-2
00:18:46.540 --> 00:18:47.494
<v Andres Pena Castro>S-wave arrivals.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3850-0
00:18:47.504 --> 00:18:50.090
<v Andres Pena Castro>The other thing that I want you
to notice are the numbers in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3850-1
00:18:50.090 --> 00:18:50.344
<v Andres Pena Castro>green.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3891-0
00:18:51.164 --> 00:18:55.890
<v Andres Pena Castro>So the lower the number in green
is the best for locating</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3891-1
00:18:55.890 --> 00:19:00.767
<v Andres Pena Castro>that event and you will notice
all of them are really good less</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3891-2
00:19:00.767 --> 00:19:04.044
<v Andres Pena Castro>than .3 or .1, but one of them
stands out.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3909-0
00:19:04.054 --> 00:19:07.694
<v Andres Pena Castro>One of them has a really large
residual it's 12 seconds</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3909-1
00:19:07.694 --> 00:19:08.604
<v Andres Pena Castro>of the residual.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3943-0
00:19:08.804 --> 00:19:12.157
<v Andres Pena Castro>But if you look at the picks
where it is located, this is a case</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3943-1
00:19:12.157 --> 00:19:15.291
<v Andres Pena Castro>where we have an incorrect
association that also happens</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3943-2
00:19:15.291 --> 00:19:17.434
<v Andres Pena Castro>sometimes where they were false
picks.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3975-0
00:19:17.484 --> 00:19:21.628
<v Andres Pena Castro>So we decided to remove those
picks because they contaminate</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3975-1
00:19:21.628 --> 00:19:25.907
<v Andres Pena Castro>and the number of phases in that
event, and we decide to locate</v>

657bbe8b-2686-4465-ac8b-0602478b5742/3975-2
00:19:25.907 --> 00:19:26.654
<v Andres Pena Castro>them again.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4002-0
00:19:30.354 --> 00:19:36.798
<v Andres Pena Castro>Okay. After we have acceptable
locations from that software, we</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4002-1
00:19:36.798 --> 00:19:40.624
<v Andres Pena Castro>decide to do a magnitude
estimations.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4034-0
00:19:40.634 --> 00:19:44.267
<v Andres Pena Castro>using a package called SourceSpec, 
and the idea is that we</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4034-1
00:19:44.267 --> 00:19:47.653
<v Andres Pena Castro>will do a spectral inversion of
the seismograph of the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4034-2
00:19:47.653 --> 00:19:49.254
<v Andres Pena Castro>seismograms window around.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4076-0
00:19:49.264 --> 00:19:53.940
<v Andres Pena Castro>The S-waves arrival, so we take
a static window 5 seconds around</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4076-1
00:19:53.940 --> 00:19:58.543
<v Andres Pena Castro>the web arrivals and we also
require a signal to noise ratio</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4076-2
00:19:58.543 --> 00:19:59.694
<v Andres Pena Castro>larger than 1.5.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4085-0
00:20:00.254 --> 00:20:01.634
<v Andres Pena Castro>You're going to see an example 
here.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4107-0
00:20:01.644 --> 00:20:05.651
<v Andres Pena Castro>Of that, the five second window
for this one event</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4107-1
00:20:05.651 --> 00:20:07.114
<v Andres Pena Castro>in Pine Island Glacier.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4114-0
00:20:07.484 --> 00:20:09.074
<v Andres Pena Castro>This is the signal to noise
ratio.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4129-0
00:20:09.084 --> 00:20:12.434
<v Andres Pena Castro>It's pretty good lower than 2020
or 2017.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4200-0
00:20:13.004 --> 00:20:16.979
<v Andres Pena Castro>We compare that into the
spectrum and we take the root</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4200-1
00:20:16.979 --> 00:20:21.152
<v Andres Pena Castro>sum of the squares and you can
see we can feed a model to that</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4200-2
00:20:21.152 --> 00:20:24.994
<v Andres Pena Castro>and we do that for multiple
stations if they're available</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4200-3
00:20:24.994 --> 00:20:29.101
<v Andres Pena Castro>and take the mean value of that
and we can have our mind that</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4200-4
00:20:29.101 --> 00:20:30.624
<v Andres Pena Castro>for the AH catalog, Okay.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4218-0
00:20:31.694 --> 00:20:38.926
<v Andres Pena Castro>After all those steps, we
finally have our seismic event</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4218-1
00:20:38.926 --> 00:20:39.874
<v Andres Pena Castro>catalog.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4231-0
00:20:41.694 --> 00:20:44.064
<v Andres Pena Castro>How that looks like on the map
view.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4245-0
00:20:44.254 --> 00:20:49.160
<v Andres Pena Castro>These are the seismic events in
Antarctica for more than two</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4245-1
00:20:49.160 --> 00:20:49.764
<v Andres Pena Castro>decades.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4287-0
00:20:50.134 --> 00:20:53.837
<v Andres Pena Castro>This is the seismicity in the study,
roughly divided in three</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4287-1
00:20:53.837 --> 00:20:57.718
<v Andres Pena Castro>regions especially so that it will
be with the divide that because</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4287-2
00:20:57.718 --> 00:21:00.584
<v Andres Pena Castro>there was a lot of concentration
of seismicity </v>

657bbe8b-2686-4465-ac8b-0602478b5742/4318-0
00:21:00.594 --> 00:21:05.588
<v Andres Pena Castro>first, in Mt. Erebus in a
radius of less or equal </v>

657bbe8b-2686-4465-ac8b-0602478b5742/4318-1
00:21:05.588 --> 00:21:09.004
<v Andres Pena Castro>to 50 km Mt. Erebus.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4359-0
00:21:09.234 --> 00:21:12.635
<v Andres Pena Castro>There was also another place
with high concentration of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4359-1
00:21:12.635 --> 00:21:15.589
<v Andres Pena Castro>seismicity, which is just
surrounding and Mount Erebus,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4359-2
00:21:15.589 --> 00:21:19.101
<v Andres Pena Castro>highlighted here by the orange
color or around their Ross ice</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4359-3
00:21:19.101 --> 00:21:19.714
<v Andres Pena Castro>shelf area.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4370-0
00:21:20.004 --> 00:21:23.514
<v Andres Pena Castro>And also we have the rest of the
continent in there.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4426-0
00:21:24.454 --> 00:21:29.599
<v Andres Pena Castro>What are the events that we
reported in here is that we also</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4426-1
00:21:29.599 --> 00:21:34.110
<v Andres Pena Castro>apply a quality control in all
the in the in the, in the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4426-2
00:21:34.110 --> 00:21:39.254
<v Andres Pena Castro>catalog is that we only include
events that have location errors</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4426-3
00:21:39.254 --> 00:21:42.894
<v Andres Pena Castro>lower or equal than 50
kilometers for Airbus.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4438-0
00:21:42.944 --> 00:21:46.333
<v Andres Pena Castro>We choose to have a higher
quality control of 25</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4438-1
00:21:46.333 --> 00:21:47.094
<v Andres Pena Castro>km.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4507-0
00:21:47.384 --> 00:21:51.252
<v Andres Pena Castro>The reason for that is that
Erebus is the place or around</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4507-1
00:21:51.252 --> 00:21:54.987
<v Andres Pena Castro>Erebus is the place where we
have a more stable seismic</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4507-2
00:21:54.987 --> 00:21:58.788
<v Andres Pena Castro>network in time and also we
require an azimuthal gap </v>

657bbe8b-2686-4465-ac8b-0602478b5742/4507-3
00:21:58.788 --> 00:22:03.056
<v Andres Pena Castro>lower than 270 degrees and that
the number of phases uses </v>

657bbe8b-2686-4465-ac8b-0602478b5742/4507-4
00:22:03.056 --> 00:22:06.324
<v Andres Pena Castro>the location has to be larger or
equal than six.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4510-0
00:22:06.834 --> 00:22:07.504
<v Andres Pena Castro>Okay.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4533-0
00:22:07.714 --> 00:22:11.283
<v Andres Pena Castro>And from the map you can see
there are multiple places in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4533-1
00:22:11.283 --> 00:22:13.744
<v Andres Pena Castro>Antarctica which is seismically
active.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4543-0
00:22:14.234 --> 00:22:17.294
<v Andres Pena Castro>A couple of them probably are
related to volcanism here.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4572-0
00:22:17.304 --> 00:22:20.869
<v Andres Pena Castro>For example, clear example is
Mount Erebus and everyone has in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4572-1
00:22:20.869 --> 00:22:23.584
<v Andres Pena Castro>West Antarctica where there is a
a reef system.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4583-0
00:22:23.594 --> 00:22:26.964
<v Andres Pena Castro>So there are some volcanism in
there, some of </v>

657bbe8b-2686-4465-ac8b-0602478b5742/4596-0
00:22:26.974 --> 00:22:29.044
<v Andres Pena Castro>it's probably intraplate seismicity.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4602-0
00:22:29.494 --> 00:22:30.864
<v Andres Pena Castro>Some are more surprising </v>

657bbe8b-2686-4465-ac8b-0602478b5742/4666-0
00:22:30.874 --> 00:22:35.117
<v Andres Pena Castro>observations and are related that
the events are near ice streams,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4666-1
00:22:35.117 --> 00:22:39.430
<v Andres Pena Castro>so that's an indication there
are potential icequakes and I/v>

657bbe8b-2686-4465-ac8b-0602478b5742/4666-2
00:22:39.430 --> 00:22:43.603
<v Andres Pena Castro>will show you a couple of
those waveforms later on and in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4666-3
00:22:43.603 --> 00:22:47.568
<v Andres Pena Castro>total for this, the entire
continent for those more than</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4666-4
00:22:47.568 --> 00:22:51.324
<v Andres Pena Castro>two decades of data, we have a
60,000 and six events.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4680-0
00:22:51.834 --> 00:22:55.084
<v Andres Pena Castro>What is the magnitude range of
the events we detected?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4729-0
00:22:55.294 --> 00:22:58.224
<v Andres Pena Castro>Here I'm just gonna show you at
the top </v>

657bbe8b-2686-4465-ac8b-0602478b5742/4731-0
00:22:58.234 --> 00:23:03.164
<v Andres Pena Castro>figure is a magnitude versus
time plot from 2000 until the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4731-1
00:23:03.164 --> 00:23:08.177
<v Andres Pena Castro>end of 2020 and the number of
events in each of the regions</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4731-2
00:23:08.177 --> 00:23:11.184
<v Andres Pena Castro>that we mentioned before are
there.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4764-0
00:23:11.194 --> 00:23:15.324
<v Andres Pena Castro>So for months levels, we have
almost 48,000 events for the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4764-1
00:23:15.324 --> 00:23:19.454
<v Andres Pena Castro>surrounding of Mt. Erebus
around the Ross Ice Shelf area.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4785-0
00:23:19.464 --> 00:23:23.930
<v Andres Pena Castro>We have 1100 events and for the
rest of the continent we have</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4785-1
00:23:23.930 --> 00:23:24.794
<v Andres Pena Castro>1400 events.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4828-0
00:23:25.244 --> 00:23:29.806
<v Andres Pena Castro>The largest magnitude event that
we detect in our catalog is a</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4828-1
00:23:29.806 --> 00:23:33.861
<v Andres Pena Castro>magnitude 4.5 and the smallest
magnitude we have in our</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4828-2
00:23:33.861 --> 00:23:38.133
<v Andres Pena Castro>catalogs and minus one. A
couple of features that you can</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4828-3
00:23:38.133 --> 00:23:38.784
<v Andres Pena Castro>see here </v>

657bbe8b-2686-4465-ac8b-0602478b5742/4845-0
00:23:38.794 --> 00:23:43.354
<v Andres Pena Castro>in this plot you will notice a
couple of times where you see</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4845-1
00:23:43.354 --> 00:23:44.624
<v Andres Pena Castro>vertical strikes.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4852-0
00:23:45.334 --> 00:23:47.744
<v Andres Pena Castro>That's actually completely
normal.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4871-0
00:23:47.754 --> 00:23:50.962
<v Andres Pena Castro>The reason why there is vertical
strikes, as you can see this is</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4871-1
00:23:50.962 --> 00:23:51.504
<v Andres Pena Castro>an example.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4901-0
00:23:51.654 --> 00:23:57.102
<v Andres Pena Castro>There are a lot of detections at
the end of 2005 and that happens</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4901-1
00:23:57.102 --> 00:24:01.724
<v Andres Pena Castro>when a seismologist go to
Antarctica during the summer.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4910-0
00:24:01.934 --> 00:24:05.984
<v Andres Pena Castro>They go during November,
December, put some seismometers.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4944-0
00:24:05.994 --> 00:24:09.783
<v Andres Pena Castro>They are allowed to put it there
for a month and then retrieve</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4944-1
00:24:09.783 --> 00:24:13.752
<v Andres Pena Castro>back, retrieve those stations so
the station do not last for long</v>

657bbe8b-2686-4465-ac8b-0602478b5742/4944-2
00:24:13.752 --> 00:24:14.714
<v Andres Pena Castro>periods of time.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5008-0
00:24:14.764 --> 00:24:18.958
<v Andres Pena Castro>So that's one and you can see
those vertical strikes in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5008-1
00:24:18.958 --> 00:24:23.750
<v Andres Pena Castro>multiple of these plots. The same is also</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5008-2
00:24:23.750 --> 00:24:28.318
<v Andres Pena Castro>true is that a lot of times
happen that in the middle of the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5008-3
00:24:28.318 --> 00:24:32.661
<v Andres Pena Castro>years which is winter in
Antarctica, the seismometer runs</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5008-4
00:24:32.661 --> 00:24:33.784
<v Andres Pena Castro>out of battery.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5017-0
00:24:33.874 --> 00:24:36.784
<v Andres Pena Castro>So no battery, no data, no
detections.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5038-0
00:24:37.174 --> 00:24:42.694
<v Andres Pena Castro>So that's why we
have this trends of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5038-1
00:24:42.694 --> 00:24:45.114
<v Andres Pena Castro>seismicity in Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5057-0
00:24:47.874 --> 00:24:51.449
<v Andres Pena Castro>Now I'm going to focus on the
preliminary observations that we</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5057-1
00:24:51.449 --> 00:24:52.584
<v Andres Pena Castro>have in our catalog.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5099-0
00:24:53.154 --> 00:24:56.666
<v Andres Pena Castro>So we have events that are
likely to be related to</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5099-1
00:24:56.666 --> 00:25:00.592
<v Andres Pena Castro>volcanism, so to mathematica
activity somewhere ones are</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5099-2
00:25:00.592 --> 00:25:04.792
<v Andres Pena Castro>related to ice quakes and or
ones are related to the regular</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5099-3
00:25:04.792 --> 00:25:05.894
<v Andres Pena Castro>tectonic events.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5119-0
00:25:06.864 --> 00:25:11.333
<v Andres Pena Castro>So let me start by looking at
the place with the most density</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5119-1
00:25:11.333 --> 00:25:12.054
<v Andres Pena Castro>of events </v>

657bbe8b-2686-4465-ac8b-0602478b5742/5125-0
00:25:12.184 --> 00:25:14.144
<v Andres Pena Castro>that would be Mt. Erebus.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5144-0
00:25:14.464 --> 00:25:17.934
<v Andres Pena Castro>So, Mt. Erebus as I said before, it
has the large number of events.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5204-0
00:25:17.944 --> 00:25:22.096
<v Andres Pena Castro>It has almost 48,000 events on
the right side and sorry in the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5204-1
00:25:22.096 --> 00:25:25.983
<v Andres Pena Castro>left figure and showing you a
density plot so dark and red</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5204-2
00:25:25.983 --> 00:25:30.135
<v Andres Pena Castro>colors indicate where we have a
large density of events, while</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5204-3
00:25:30.135 --> 00:25:34.154
<v Andres Pena Castro>yellow colors and white colors
indicate where we don't have.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5220-0
00:25:34.844 --> 00:25:36.724
<v Andres Pena Castro>We don't have a lot of
seismicity.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5235-0
00:25:37.604 --> 00:25:40.748
<v Andres Pena Castro>The special
feature here is that the </v>

657bbe8b-2686-4465-ac8b-0602478b5742/5235-1
00:25:40.748 --> 00:25:41.014
<v Andres Pena Castro>seismiciy</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5272-0
00:25:41.024 --> 00:25:45.837
<v Andres Pena Castro>is concentrated on the summit
and we're here and also some of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5272-1
00:25:45.837 --> 00:25:49.972
<v Andres Pena Castro>the seismicity is also moving
toward the north and the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5272-2
00:25:49.972 --> 00:25:52.604
<v Andres Pena Castro>northwest of the summit. At
Erebus </v>

657bbe8b-2686-4465-ac8b-0602478b5742/5300-0
00:25:53.094 --> 00:25:57.560
<v Andres Pena Castro>previous seismic events were
only associated with eruptions</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5300-1
00:25:57.560 --> 00:26:02.025
<v Andres Pena Castro>or very long-period explosive
eruptions, and there are also</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5300-2
00:26:02.025 --> 00:26:05.374
<v Andres Pena Castro>reports of dynamically triggered
ice quakes.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5329-0
00:26:05.644 --> 00:26:10.177
<v Andres Pena Castro>However, the number of events of
eruptions is only around 3,000</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5329-1
00:26:10.177 --> 00:26:13.414
<v Andres Pena Castro>and the number of ice quakes is
around 7,000,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5352-0
00:26:13.424 --> 00:26:17.297
<v Andres Pena Castro>so we have at least one order of
magnitude higher of events and</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5352-1
00:26:17.297 --> 00:26:19.354
<v Andres Pena Castro>also for a longer period of
time </v>

657bbe8b-2686-4465-ac8b-0602478b5742/5409-0
00:26:19.364 --> 00:26:23.139
<v Andres Pena Castro>we analyze and the other thing
is that when I look at the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5409-1
00:26:23.139 --> 00:26:27.109
<v Andres Pena Castro>timing of the eruptions and the
timing of the earthquakes so</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5409-2
00:26:27.109 --> 00:26:30.949
<v Andres Pena Castro>that this upload, the weekly
number of eruptions in orange</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5409-3
00:26:30.949 --> 00:26:34.854
<v Andres Pena Castro>between 2003 and 2011, that this
is data from Knox et al.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5415-0
00:26:35.184 --> 00:26:36.614
<v Andres Pena Castro>They didn't analyze </v>

657bbe8b-2686-4465-ac8b-0602478b5742/5442-0
00:26:37.334 --> 00:26:42.956
<v Andres Pena Castro>a longer period of time and
there are two clear peaks of an</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5442-1
00:26:42.956 --> 00:26:47.244
<v Andres Pena Castro>eruption activity in the entire
time window,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5507-0
00:26:47.314 --> 00:26:50.886
<v Andres Pena Castro>but when we look at the weekly
number of earthquakes in our</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5507-1
00:26:50.886 --> 00:26:54.517
<v Andres Pena Castro>seismic catalog, you will see
that there are not really, they</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5507-2
00:26:54.517 --> 00:26:57.850
<v Andres Pena Castro>don't correspond 1 to 1,
meaning that we are not only</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5507-3
00:26:57.850 --> 00:27:01.064
<v Andres Pena Castro>detecting some other
processes, we need a Mt.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5507-4
00:27:01.064 --> 00:27:04.814
<v Andres Pena Castro>Erebus and not only eruptions in
this periods of time as well.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5534-0
00:27:05.734 --> 00:27:10.768
<v Andres Pena Castro>So I also look at the cross
section with depth at the plot</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5534-1
00:27:10.768 --> 00:27:14.464
<v Andres Pena Castro>on the left and something that
was interesting</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5574-0
00:27:14.474 --> 00:27:17.811
<v Andres Pena Castro>there were some seems to be some
deeper events beneath Mt.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5574-1
00:27:17.811 --> 00:27:21.315
<v Andres Pena Castro>Erebus, but only shallow events
have been reported such as the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5574-2
00:27:21.315 --> 00:27:24.708
<v Andres Pena Castro>ice quakes or the eruptions. 
Our seismic catalog contains</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5574-3
00:27:24.708 --> 00:27:25.764
<v Andres Pena Castro>some deeper events.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5590-0
00:27:25.774 --> 00:27:27.884
<v Andres Pena Castro>So there are processes that
might be happening.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5620-0
00:27:27.894 --> 00:27:31.883
<v Andres Pena Castro>at Mt. Erebus and this is
something that I will take a</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5620-1
00:27:31.883 --> 00:27:36.004
<v Andres Pena Castro>look in closer look for the next
year for the next two years.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5637-0
00:27:37.274 --> 00:27:42.378
<v Andres Pena Castro>Now I'm gonna move on into a
different region called the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5637-1
00:27:42.378 --> 00:27:43.184
<v Andres Pena Castro>Maryland.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5641-0
00:27:43.244 --> 00:27:43.984
<v Andres Pena Castro>Where is that?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5671-0
00:27:43.994 --> 00:27:48.241
<v Andres Pena Castro>So here I highlighted in the
Polygon in red the region I have</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5671-1
00:27:48.241 --> 00:27:50.844
<v Andres Pena Castro>in the circles I have the
seismicity.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5691-0
00:27:51.354 --> 00:27:54.733
<v Andres Pena Castro>The triangles represent the
seismic stations and this place</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5691-1
00:27:54.733 --> 00:27:57.604
<v Andres Pena Castro>over here is called the
Executive Committee Range.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5721-0
00:27:57.794 --> 00:28:00.831
<v Andres Pena Castro>This place actually has
multiple volcanoes and the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5721-1
00:28:00.831 --> 00:28:04.509
<v Andres Pena Castro>events are located near those
volcanoes and some of those ones</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5721-2
00:28:04.509 --> 00:28:06.144
<v Andres Pena Castro>are really not well studied.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5753-0
00:28:06.154 --> 00:28:08.694
<v Andres Pena Castro>Some of them we don't even know
if they're active or not.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5762-0
00:28:09.584 --> 00:28:12.935
<v Andres Pena Castro>And I'm just gonna show you an
example of the waveform for one</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5762-1
00:28:12.935 --> 00:28:15.648
<v Andres Pena Castro>of these events that I
highlighted here in the Red</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5762-2
00:28:15.648 --> 00:28:15.914
<v Andres Pena Castro>Star.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5837-0
00:28:16.504 --> 00:28:20.574
<v Andres Pena Castro>This one has a moment magnitude
of 1.7 is at a depth of 32</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5837-1
00:28:20.574 --> 00:28:24.781
<v Andres Pena Castro>km, and you can see
these are the vertical waveforms</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5837-2
00:28:24.781 --> 00:28:28.850
<v Andres Pena Castro>with the respective P-wave
arrivals from our workflow, and</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5837-3
00:28:28.850 --> 00:28:32.713
<v Andres Pena Castro>we have the horizontal
components with their respective</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5837-4
00:28:32.713 --> 00:28:36.851
<v Andres Pena Castro>S-wave arrivals, with the
waveforms that are really</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5837-5
00:28:36.851 --> 00:28:37.954
<v Andres Pena Castro>clean waveforms.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5883-0
00:28:38.024 --> 00:28:41.455
<v Andres Pena Castro>The depth also matches
relatively well with what others</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5883-1
00:28:41.455 --> 00:28:45.321
<v Andres Pena Castro>have reported and some of these
events that are in this region</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5883-2
00:28:45.321 --> 00:28:48.939
<v Andres Pena Castro>and the Executive Community
Range are actually deep, long</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5883-3
00:28:48.939 --> 00:28:52.992
<v Andres Pena Castro>period earthquake similar to the
reports of other studies in the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5883-4
00:28:52.992 --> 00:28:53.304
<v Andres Pena Castro>past.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5895-0
00:28:54.494 --> 00:28:57.844
<v Andres Pena Castro>So that's another interesting
observation in this spot.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5955-0
00:28:58.414 --> 00:29:02.142
<v Andres Pena Castro>And so here I'm just going to show
you a scalargram or a spectrum gram</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5955-1
00:29:02.142 --> 00:29:05.468
<v Andres Pena Castro>where I'm of the vertical
component of that event and you</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5955-2
00:29:05.468 --> 00:29:08.966
<v Andres Pena Castro>will see that the energy is
clearly only distributed between</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5955-3
00:29:08.966 --> 00:29:12.120
<v Andres Pena Castro>1-3 hz, similar to
other deep long-period</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5955-4
00:29:12.120 --> 00:29:15.274
<v Andres Pena Castro>earthquakes reported in other
places around the world.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5988-0
00:29:16.844 --> 00:29:20.728
<v Andres Pena Castro>So the seismic events that we
have in our catalog, some of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5988-1
00:29:20.728 --> 00:29:24.545
<v Andres Pena Castro>them definitely can be used to
study volcanic or magmatic</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5988-2
00:29:24.545 --> 00:29:26.454
<v Andres Pena Castro>processes beneath Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/5990-0
00:29:26.544 --> 00:29:26.634
<v Andres Pena Castro>Okay.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6012-0
00:29:30.614 --> 00:29:35.230
<v Andres Pena Castro>Now that I covered the
volcanic part, I'm going to move on</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6012-1
00:29:35.230 --> 00:29:36.384
<v Andres Pena Castro>into ice quakes.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6052-0
00:29:37.614 --> 00:29:41.804
<v Andres Pena Castro>So here on the map I'm just
showing you here the names of a</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6052-1
00:29:41.804 --> 00:29:46.203
<v Andres Pena Castro>couple of Antarctic ice shelves
and on the right-side are a couple</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6052-2
00:29:46.203 --> 00:29:49.974
<v Andres Pena Castro>of the Antarctic ice quakes and
glacier I put on top.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6071-0
00:29:50.144 --> 00:29:54.414
<v Andres Pena Castro>The seismicity and the maps are
color coded with ice velocity.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6153-0
00:29:54.744 --> 00:29:59.262
<v Andres Pena Castro>This data belongs to Rignot et al. in 2017 and yellow colors</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6153-1
00:29:59.262 --> 00:30:03.636
<v Andres Pena Castro>on the map or pink colors on the
map or even a couple of the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6153-2
00:30:03.636 --> 00:30:08.225
<v Andres Pena Castro>green colors in the map indicate
places where you have</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6153-3
00:30:08.225 --> 00:30:12.957
<v Andres Pena Castro>ice flowing, usually towards the
coast and you will notice that a</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6153-4
00:30:12.957 --> 00:30:17.116
<v Andres Pena Castro>lot of the seismicity that we
have overlaps with some ice</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6153-5
00:30:17.116 --> 00:30:17.474
<v Andres Pena Castro>shelves</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6166-0
00:30:17.484 --> 00:30:20.684
<v Andres Pena Castro>specifically here we have the
Ross Ice Shelf over here.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6206-0
00:30:20.954 --> 00:30:26.343
<v Andres Pena Castro>The Sulphur Ice Shelf and Thwaites
and another ones, and also </v>

657bbe8b-2686-4465-ac8b-0602478b5742/6206-1
00:30:26.343 --> 00:30:31.560
<v Andres Pena Castro>couple of ice quakes or glaciers
specifically here the David</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6206-2
00:30:31.560 --> 00:30:34.724
<v Andres Pena Castro>Glacier or the Michael ice quake.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6229-0
00:30:34.774 --> 00:30:38.053
<v Andres Pena Castro>So I want to assuming into a
couple of those regions and show</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6229-1
00:30:38.053 --> 00:30:40.074
<v Andres Pena Castro>you how those ice quakes looks
like.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6238-0
00:30:41.214 --> 00:30:43.674
<v Andres Pena Castro>I wanna start with the simple
code.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6245-0
00:30:43.684 --> 00:30:44.584
<v Andres Pena Castro>So where is that?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6251-0
00:30:44.694 --> 00:30:48.414
<v Andres Pena Castro>Here I highlighted the region in
red and.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6277-0
00:30:50.114 --> 00:30:54.515
<v Andres Pena Castro>So you can see there is a
cluster of seismicity over here</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6277-1
00:30:54.515 --> 00:30:56.614
<v Andres Pena Castro>near the station S020.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6290-0
00:30:57.844 --> 00:31:01.742
<v Andres Pena Castro>There was actually not only one
station, but for the purpose of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6290-1
00:31:01.742 --> 00:31:02.594
<v Andres Pena Castro>illustrations.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6322-0
00:31:02.744 --> 00:31:07.018
<v Andres Pena Castro>I'm just showing one, but during
that period of time there were</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6322-1
00:31:07.018 --> 00:31:11.024
<v Andres Pena Castro>13 arrays so sorry, 13 seismic
stations for a period of one</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6322-2
00:31:11.024 --> 00:31:11.424
<v Andres Pena Castro>month.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6367-0
00:31:12.454 --> 00:31:16.390
<v Andres Pena Castro>This place right where
it says Vista is located is</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6367-1
00:31:16.390 --> 00:31:20.195
<v Andres Pena Castro>called the Ice Stream E or also
MacAyeal Ice Stream and the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6367-2
00:31:20.195 --> 00:31:23.934
<v Andres Pena Castro>waveforms and the locations
indicate across very origin.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6371-0
00:31:23.944 --> 00:31:25.384
<v Andres Pena Castro>The locations are already
mentioned.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6378-0
00:31:25.394 --> 00:31:27.144
<v Andres Pena Castro>Is a place with high ice
velocity.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6388-0
00:31:27.314 --> 00:31:29.274
<v Andres Pena Castro>So how the waveforms indicate
that?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6409-0
00:31:30.464 --> 00:31:34.943
<v Andres Pena Castro>So here I'm just showing you the
vertical components for four</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6409-1
00:31:34.943 --> 00:31:37.254
<v Andres Pena Castro>events observed by this station.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6417-0
00:31:37.264 --> 00:31:39.494
<v Andres Pena Castro>This filter between 5-30
Hz.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6431-0
00:31:40.204 --> 00:31:42.554
<v Andres Pena Castro>I want you to take a quick look
to the X.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6438-0
00:31:42.604 --> 00:31:45.494
<v Andres Pena Castro>The time axis is only four
seconds long.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6448-0
00:31:45.504 --> 00:31:47.054
<v Andres Pena Castro>These are four different events.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6452-0
00:31:47.784 --> 00:31:48.504
<v Andres Pena Castro>P-wave</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6472-0
00:31:48.574 --> 00:31:51.354
<v Andres Pena Castro>arrivals are in the
middle, and the S-wave arrivals</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6472-1
00:31:51.354 --> 00:31:52.174
<v Andres Pena Castro>are the red lines.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6502-0
00:31:52.184 --> 00:31:56.193
<v Andres Pena Castro>But if you take the difference
between the S-, P-wave arrival,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6502-1
00:31:56.193 --> 00:32:00.077
<v Andres Pena Castro>they are less than .5 seconds,
which indicates that there are</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6502-2
00:32:00.077 --> 00:32:01.204
<v Andres Pena Castro>two possibilities.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6537-0
00:32:01.214 --> 00:32:05.612
<v Andres Pena Castro>One of them, it has to be a
shallow source or really close</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6537-1
00:32:05.612 --> 00:32:10.309
<v Andres Pena Castro>source to the station and
also the location of a lot of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6537-2
00:32:10.309 --> 00:32:12.694
<v Andres Pena Castro>these events over here.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6557-0
00:32:12.764 --> 00:32:15.787
<v Andres Pena Castro>This four specifically is less
than a couple of 100 m,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6557-1
00:32:15.787 --> 00:32:18.154
<v Andres Pena Castro>which indicates also a shallow
source as well.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6560-0
00:32:19.264 --> 00:32:20.934
<v Andres Pena Castro>Umm. Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6569-0
00:32:20.944 --> 00:32:23.064
<v Andres Pena Castro>And they're also highly similar.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6596-0
00:32:23.124 --> 00:32:26.333
<v Andres Pena Castro>You can see that from
the way from setting the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6596-1
00:32:26.333 --> 00:32:29.714
<v Andres Pena Castro>similarity between these events
over here is more than .7.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6611-0
00:32:33.024 --> 00:32:37.054
<v Andres Pena Castro>OK, now I'm gonna move on into a
different place.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6723-0
00:32:37.104 --> 00:32:41.162
<v Andres Pena Castro>So here I put all the seismicity
in our catalog and I want to</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6723-1
00:32:41.162 --> 00:32:45.285
<v Andres Pena Castro>focus in this spot called David
Glacier over here and I'm also</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6723-2
00:32:45.285 --> 00:32:49.277
<v Andres Pena Castro>going to show you the seismogram
for this station called BNDA</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6723-3
00:32:49.277 --> 00:32:53.204
<v Andres Pena Castro>here of Northeast a couple of
like hundreds kilometers away</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6723-4
00:32:53.204 --> 00:32:57.065
<v Andres Pena Castro>from David Glacier but record
really nice events that this</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6723-5
00:32:57.065 --> 00:33:01.122
<v Andres Pena Castro>spot and I'm going to
focus on the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6723-6
00:33:01.122 --> 00:33:05.376
<v Andres Pena Castro>stars so there are five stars
were here they are really close</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6723-7
00:33:05.376 --> 00:33:09.499
<v Andres Pena Castro>to each other and I'm going to show
you the waveforms for some of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6723-8
00:33:09.499 --> 00:33:11.004
<v Andres Pena Castro>those ones and they're </v>

657bbe8b-2686-4465-ac8b-0602478b5742/6748-0
00:33:11.114 --> 00:33:15.137
<v Andres Pena Castro>called the waveforms are color
coded also with the colors of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6748-1
00:33:15.137 --> 00:33:15.994
<v Andres Pena Castro>the start at </v>

657bbe8b-2686-4465-ac8b-0602478b5742/6758-0
00:33:16.004 --> 00:33:21.084
<v Andres Pena Castro>these events are magnitude
between 2 and 2.5.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6791-0
00:33:21.094 --> 00:33:24.716
<v Andres Pena Castro>They were detected during the
January 2003 and they are</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6791-1
00:33:24.716 --> 00:33:28.920
<v Andres Pena Castro>relatively long, like
a minute long at least observed</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6791-2
00:33:28.920 --> 00:33:29.954
<v Andres Pena Castro>by this station.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6829-0
00:33:30.224 --> 00:33:33.868
<v Andres Pena Castro>And if I compare if I calculate
the cross correlation between</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6829-1
00:33:33.868 --> 00:33:37.571
<v Andres Pena Castro>these event in black and your
events that are highlighted here</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6829-2
00:33:37.571 --> 00:33:40.804
<v Andres Pena Castro>with the stars, you will notice
that there is a lot of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6829-3
00:33:40.804 --> 00:33:42.214
<v Andres Pena Castro>similarity between them.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6857-0
00:33:42.224 --> 00:33:46.535
<v Andres Pena Castro>So I put the cross correlation
value specifically between</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6857-1
00:33:46.535 --> 00:33:50.474
<v Andres Pena Castro>parentheses, so this one is .77
.97, point 9.87.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6878-0
00:33:50.744 --> 00:33:55.638
<v Andres Pena Castro>So we have a place in David
Glacier where you have similar</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6878-1
00:33:55.638 --> 00:33:58.044
<v Andres Pena Castro>events at similar locations.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6892-0
00:33:58.314 --> 00:34:00.884
<v Andres Pena Castro>This is not, not so
surprising.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6934-0
00:34:00.894 --> 00:34:04.755
<v Andres Pena Castro>After all, some other have
reported similar events by</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6934-1
00:34:04.755 --> 00:34:08.973
<v Andres Pena Castro>Danesi and also so at all, and
they postulated that in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6934-2
00:34:08.973 --> 00:34:12.404
<v Andres Pena Castro>David Glazier there is a large
single asperity.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6938-0
00:34:12.414 --> 00:34:14.384
<v Andres Pena Castro>There is always a failure.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6962-0
00:34:14.394 --> 00:34:18.608
<v Andres Pena Castro>It's always failing in the same
way, and that's the reason</v>

657bbe8b-2686-4465-ac8b-0602478b5742/6962-1
00:34:18.608 --> 00:34:20.714
<v Andres Pena Castro>why we have this similar events.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7010-0
00:34:23.694 --> 00:34:27.980
<v Andres Pena Castro>Now, however, when we look at a
couple of other events near</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7010-1
00:34:27.980 --> 00:34:32.409
<v Andres Pena Castro>David Glacier event #2 and also
a little bit further away, we</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7010-2
00:34:32.409 --> 00:34:36.694
<v Andres Pena Castro>found out that there are also
non similar events over here.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7064-0
00:34:36.804 --> 00:34:40.292
<v Andres Pena Castro>So this is our reference
waveform in red and sorry in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7064-1
00:34:40.292 --> 00:34:44.025
<v Andres Pena Castro>black and when I compare with
the waveforms observed by this</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7064-2
00:34:44.025 --> 00:34:47.696
<v Andres Pena Castro>station for all these events in
with the diamonds, you will</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7064-3
00:34:47.696 --> 00:34:49.654
<v Andres Pena Castro>notice that they're not similar.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7075-0
00:34:49.664 --> 00:34:51.894
<v Andres Pena Castro>This is by just calculating the
cross correlation.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7094-0
00:34:51.944 --> 00:34:55.132
<v Andres Pena Castro>The magnitude ranges around the
same as well as the events in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7094-1
00:34:55.132 --> 00:34:55.594
<v Andres Pena Castro>the left.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7146-0
00:34:55.684 --> 00:34:59.707
<v Andres Pena Castro>They're going to do and 2.5, but
the cross correlation value are</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7146-1
00:34:59.707 --> 00:35:03.420
<v Andres Pena Castro>less than .3 in general, meaning
that there is not is not a</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7146-2
00:35:03.420 --> 00:35:07.381
<v Andres Pena Castro>single asperity, but there might
be other processes going on in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7146-3
00:35:07.381 --> 00:35:09.794
<v Andres Pena Castro>David Glacier or around David
Glacier.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7205-0
00:35:10.444 --> 00:35:15.476
<v Andres Pena Castro>So all this observation indicate
that these ice quakes can be</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7205-1
00:35:15.476 --> 00:35:20.349
<v Andres Pena Castro>used to study the state of the
glacier, the ice shelfs, or the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7205-2
00:35:20.349 --> 00:35:25.221
<v Andres Pena Castro>ice streams, but also highlights
how similar tectonic</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7205-3
00:35:25.221 --> 00:35:29.534
<v Andres Pena Castro>seismicity to signals from
the cryosphere as well.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7238-0
00:35:30.404 --> 00:35:34.186
<v Andres Pena Castro>Because if you remember, we use
face speaker training </v>

657bbe8b-2686-4465-ac8b-0602478b5742/7238-1
00:35:34.186 --> 00:35:38.353
<v Andres Pena Castro>tectonic events, but we are also
finding other events related to</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7238-2
00:35:38.353 --> 00:35:39.314
<v Andres Pena Castro>the cryosphere.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7296-0
00:35:42.994 --> 00:35:46.763
<v Andres Pena Castro>Now I'm going to change to 
another region in East</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7296-1
00:35:46.763 --> 00:35:50.599
<v Andres Pena Castro>Antarctica, but I just want to
remind you that there are</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7296-2
00:35:50.599 --> 00:35:54.569
<v Andres Pena Castro>multiple events that were
located in both in East and West</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7296-3
00:35:54.569 --> 00:35:58.473
<v Andres Pena Castro>Antarctica in our catalog
reported by order that might be</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7296-4
00:35:58.473 --> 00:36:00.424
<v Andres Pena Castro>related to fall reactivation.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7310-0
00:36:00.474 --> 00:36:03.334
<v Andres Pena Castro>This is the case in East
Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7402-0
00:36:04.354 --> 00:36:08.424
<v Andres Pena Castro>Uh, there are some events we
have in our catalog 12 events</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7402-1
00:36:08.424 --> 00:36:12.769
<v Andres Pena Castro>with magnitudes between 1.2 and
2.7, and although some of them</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7402-2
00:36:12.769 --> 00:36:16.908
<v Andres Pena Castro>are really the stations that
detected these events are</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7402-3
00:36:16.908 --> 00:36:21.115
<v Andres Pena Castro>really sparse or they're far
away from it, although some</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7402-4
00:36:21.115 --> 00:36:24.840
<v Andres Pena Castro>of the event depths in this
region and other ones are</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7402-5
00:36:24.840 --> 00:36:28.427
<v Andres Pena Castro>between 5 km and 35
km and they are</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7402-6
00:36:28.427 --> 00:36:31.945
<v Andres Pena Castro>comparable to intraplate
earthquake depths in our</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7402-7
00:36:31.945 --> 00:36:32.634
<v Andres Pena Castro>continent.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7419-0
00:36:32.644 --> 00:36:35.844
<v Andres Pena Castro>So that's why we say that some
of them are probably related to</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7427-0
00:36:36.264 --> 00:36:40.314
<v Andres Pena Castro>tectonic activity, Okay. </v>

657bbe8b-2686-4465-ac8b-0602478b5742/7433-0
00:36:43.534 --> 00:36:44.874
<v Andres Pena Castro>Now I want to mention.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7444-0
00:36:46.804 --> 00:36:52.014
<v Andres Pena Castro>that the catalog has some
limitations, starting with the </v>

657bbe8b-2686-4465-ac8b-0602478b5742/7450-0
00:36:53.854 --> 00:36:55.124
<v Andres Pena Castro>velocity model.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7475-0
00:36:55.234 --> 00:37:00.568
<v Andres Pena Castro>So if you remember for the
location and for the association</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7475-1
00:37:00.568 --> 00:37:04.924
<v Andres Pena Castro>step, we use a global
velocity model.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7481-0
00:37:04.934 --> 00:37:06.784
<v Andres Pena Castro>We use a K135.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7501-0
00:37:06.944 --> 00:37:10.880
<v Andres Pena Castro>This is just a flow of that
velocity model from 0 to 50</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7501-1
00:37:10.880 --> 00:37:11.614
<v Andres Pena Castro>km.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7518-0
00:37:11.764 --> 00:37:15.651
<v Andres Pena Castro>The P-wave and the S-wave
velocity and we use that for all</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7518-1
00:37:15.651 --> 00:37:17.034
<v Andres Pena Castro>the entire continent.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7533-0
00:37:17.124 --> 00:37:21.934
<v Andres Pena Castro>But this velocity model might
not be good in certain</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7533-1
00:37:21.934 --> 00:37:22.564
<v Andres Pena Castro>regions.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7571-0
00:37:22.574 --> 00:37:25.976
<v Andres Pena Castro>For example, here took a local
velocity model from West</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7571-1
00:37:25.976 --> 00:37:29.256
<v Andres Pena Castro>Antarctica and you can see there
are some significant</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7571-2
00:37:29.256 --> 00:37:33.023
<v Andres Pena Castro>differences, meaning that the
hypocenter in some regions from</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7571-3
00:37:33.023 --> 00:37:34.784
<v Andres Pena Castro>some regions can be improved.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7599-0
00:37:36.164 --> 00:37:40.113
<v Andres Pena Castro>Based on our catalog just
provide an idea in some cases of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7599-1
00:37:40.113 --> 00:37:42.924
<v Andres Pena Castro>of that the possible depth of
the events.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7610-0
00:37:43.914 --> 00:37:47.404
<v Andres Pena Castro>The other part is that we use a
quality control.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7627-0
00:37:48.294 --> 00:37:52.784
<v Andres Pena Castro>The quality control was that we
have error location less than 50</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7627-1
00:37:52.784 --> 00:37:53.544
<v Andres Pena Castro>km.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7653-0
00:37:53.654 --> 00:37:58.152
<v Andres Pena Castro>Also impose a signal to noise
ratio in the moment magnitude of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7653-1
00:37:58.152 --> 00:38:00.864
<v Andres Pena Castro>1.5 and azimuthal gap of 270
degrees.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7676-0
00:38:01.094 --> 00:38:06.637
<v Andres Pena Castro>So why we choose to do that and
the quality control is that so</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7676-1
00:38:06.637 --> 00:38:07.604
<v Andres Pena Castro>there </v>

657bbe8b-2686-4465-ac8b-0602478b5742/7721-0
00:38:07.794 --> 00:38:11.199
<v Andres Pena Castro>our idea is that we want to
provide a higher quality</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7721-1
00:38:11.199 --> 00:38:15.311
<v Andres Pena Castro>control, even though this will
reduce the number of events, but</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7721-2
00:38:15.311 --> 00:38:19.422
<v Andres Pena Castro>all these quality control will
will provide a better quality in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7721-3
00:38:19.422 --> 00:38:22.634
<v Andres Pena Castro>the location and also on the
event with the base.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7775-0
00:38:23.264 --> 00:38:28.220
<v Andres Pena Castro>Of course, if we don't apply any
quality control, we can easily</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7775-1
00:38:28.220 --> 00:38:32.323
<v Andres Pena Castro>duplicate or even triple the
amounts of events in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7775-2
00:38:32.323 --> 00:38:36.969
<v Andres Pena Castro>Antarctica and the depth
constraint has to be in or the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7775-3
00:38:36.969 --> 00:38:41.537
<v Andres Pena Castro>depth reported by the catalog
have to interpret cautiously</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7775-4
00:38:41.537 --> 00:38:41.924
<v Andres Pena Castro>this.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7833-0
00:38:41.934 --> 00:38:46.890
<v Andres Pena Castro>The main reason that we say that
is that according with synthetic</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7833-1
00:38:46.890 --> 00:38:51.545
<v Andres Pena Castro>tests done by Gomberg et al. in
1990 is that one general rule of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7833-2
00:38:51.545 --> 00:38:55.825
<v Andres Pena Castro>thumb is that it required to
have at least 1 S-phase at a</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7833-3
00:38:55.825 --> 00:38:59.354
<v Andres Pena Castro>station within approximately 1.4
focal depths,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7837-0
00:38:59.364 --> 00:39:00.864
<v Andres Pena Castro>distance from the source.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7861-0
00:39:01.014 --> 00:39:05.232
<v Andres Pena Castro>Multiple cases we don't have
that requirement somebody once</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7861-1
00:39:05.232 --> 00:39:06.184
<v Andres Pena Castro>we do have it.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7894-0
00:39:06.194 --> 00:39:10.006
<v Andres Pena Castro>But in general, the station the
distance from a couple of the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7894-1
00:39:10.006 --> 00:39:13.757
<v Andres Pena Castro>sources that we have to the
station sometime, it's more than</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7894-2
00:39:13.757 --> 00:39:15.724
<v Andres Pena Castro>hundreds of kilometers far away.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7909-0
00:39:15.984 --> 00:39:19.329
<v Andres Pena Castro>So the depth has to be
interpreted with some caution in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7909-1
00:39:19.329 --> 00:39:20.464
<v Andres Pena Castro>some areas.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7930-0
00:39:23.104 --> 00:39:27.134
<v Andres Pena Castro>Now what the catalog can be used
in the future?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/7949-0
00:39:27.194 --> 00:39:29.714
<v Andres Pena Castro>We think that the catalog can be
used with a template </v>

657bbe8b-2686-4465-ac8b-0602478b5742/7953-0
00:39:29.724 --> 00:39:30.604
<v Andres Pena Castro>matches approaches.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8048-0
00:39:30.614 --> 00:39:34.569
<v Andres Pena Castro>So if some other folks are
interested in finding more</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8048-1
00:39:34.569 --> 00:39:38.524
<v Andres Pena Castro>events and maybe reveal some
temporal trends in the seismicity,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8048-2
00:39:38.524 --> 00:39:42.677
<v Andres Pena Castro> will be possible that if
there are enough detections and</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8048-3
00:39:42.677 --> 00:39:46.896
<v Andres Pena Castro>the D-geometry of the events and the station</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8048-4
00:39:46.896 --> 00:39:50.521
<v Andres Pena Castro>allow, maybe use more
sophisticated algorithms such as</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8048-5
00:39:50.521 --> 00:39:54.805
<v Andres Pena Castro>double difference relocation to
do some discovery of faults that</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8048-6
00:39:54.805 --> 00:39:58.826
<v Andres Pena Castro>this has been used by
multiple scientists in other</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8048-7
00:39:58.826 --> 00:40:01.924
<v Andres Pena Castro>regions such as risk crashes and
other places.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8059-0
00:40:02.254 --> 00:40:05.284
<v Andres Pena Castro>So that will be one possibility
to use the catalog.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8072-0
00:40:05.644 --> 00:40:08.709
<v Andres Pena Castro>Another one is to use the
catalog in a transfer learning</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8072-1
00:40:08.709 --> 00:40:08.924
<v Andres Pena Castro>way.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8112-0
00:40:09.174 --> 00:40:13.898
<v Andres Pena Castro>What do I mean is that we use a
data set training tectonic</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8112-1
00:40:13.898 --> 00:40:18.942
<v Andres Pena Castro>events to detect seismicity in
Antarctica and has not seen any</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8112-2
00:40:18.942 --> 00:40:21.184
<v Andres Pena Castro>of these events in the past.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8157-0
00:40:21.194 --> 00:40:25.212
<v Andres Pena Castro>But according with Lapins et al.
study is that it's better</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8157-1
00:40:25.212 --> 00:40:28.840
<v Andres Pena Castro>sometimes to use as your
training data set local events</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8157-2
00:40:28.840 --> 00:40:32.533
<v Andres Pena Castro>from your own seismic network
and that will increase the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8157-3
00:40:32.533 --> 00:40:35.384
<v Andres Pena Castro>number of picks or the number of
detection.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8173-0
00:40:35.554 --> 00:40:38.632
<v Andres Pena Castro>So here on the right side I'm
just showing you an example of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8173-1
00:40:38.632 --> 00:40:38.884
<v Andres Pena Castro>that.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8211-0
00:40:38.954 --> 00:40:42.594
<v Andres Pena Castro>So we have the number of S, the
total number of bands with </v>

657bbe8b-2686-4465-ac8b-0602478b5742/8211-1
00:40:42.594 --> 00:40:46.354
<v Andres Pena Castro>machine learning phase, speaker
in yellow, and you can see that</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8211-2
00:40:46.354 --> 00:40:48.024
<v Andres Pena Castro>they detect a lot of events.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8233-0
00:40:48.034 --> 00:40:51.142
<v Andres Pena Castro>But if you retrain that with
local events, you are able to</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8233-1
00:40:51.142 --> 00:40:52.564
<v Andres Pena Castro>detect more events as well.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8258-0
00:40:54.004 --> 00:40:57.822
<v Andres Pena Castro>Other options is to study a
earthquakes, earthquake</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8258-1
00:40:57.822 --> 00:41:02.227
<v Andres Pena Castro>interactions or interesting like
interactions such as title</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8258-2
00:41:02.227 --> 00:41:03.034
<v Andres Pena Castro>triggering.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8271-0
00:41:03.404 --> 00:41:05.834
<v Andres Pena Castro>This has been done partially by
Peng et al.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8290-0
00:41:05.844 --> 00:41:10.972
<v Andres Pena Castro>In 2014, he showed that there is
some dynamic triggering</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8290-1
00:41:10.972 --> 00:41:12.874
<v Andres Pena Castro>going on in Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8341-0
00:41:12.884 --> 00:41:17.270
<v Andres Pena Castro>by looking at only one single
event after the seismic event</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8341-1
00:41:17.270 --> 00:41:21.582
<v Andres Pena Castro>from Chile, and there is some
evidence that there is some</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8341-2
00:41:21.582 --> 00:41:26.117
<v Andres Pena Castro>dynamic triggering which indicates
that there might be some faults</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8341-3
00:41:26.117 --> 00:41:30.874
<v Andres Pena Castro>or cryospheric places that you
are highly sensitive to external</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8341-4
00:41:30.874 --> 00:41:33.104
<v Andres Pena Castro>stress perturbations. Finally.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8359-0
00:41:35.624 --> 00:41:38.479
<v Andres Pena Castro>it's important to do a
systematic classification of the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8359-1
00:41:38.479 --> 00:41:39.294
<v Andres Pena Castro>seismic signals.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8372-0
00:41:39.304 --> 00:41:42.969
<v Andres Pena Castro>I show you that there are
different types of signals in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8372-1
00:41:42.969 --> 00:41:43.754
<v Andres Pena Castro>the catalog.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8380-0
00:41:43.764 --> 00:41:45.894
<v Andres Pena Castro>We have some long-period
earthquakes.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8390-0
00:41:46.004 --> 00:41:47.694
<v Andres Pena Castro>We have some icequake waveforms.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8455-0
00:41:47.704 --> 00:41:50.830
<v Andres Pena Castro>We also have some earthquake
waveforms, but we did not</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8455-1
00:41:50.830 --> 00:41:54.410
<v Andres Pena Castro>classify them all of them, but
we did was we just like zooming</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8455-2
00:41:54.410 --> 00:41:57.706
<v Andres Pena Castro>into our region that look
interesting were like oh this</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8455-3
00:41:57.706 --> 00:42:01.172
<v Andres Pena Castro>is stuck, what is what the
waveforms look like and see what</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8455-4
00:42:01.172 --> 00:42:04.184
<v Andres Pena Castro>other have done in the past in
this specific region.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8477-0
00:42:04.194 --> 00:42:07.392
<v Andres Pena Castro>That's how we determine that
some of our waveforms are long</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8477-1
00:42:07.392 --> 00:42:09.364
<v Andres Pena Castro>period or earthquakes or icequakes.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8521-0
00:42:10.424 --> 00:42:15.863
<v Andres Pena Castro>And finally, if we do some focal
mechanisms, we probably will be</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8521-1
00:42:15.863 --> 00:42:21.301
<v Andres Pena Castro>able to obtain a better idea of
what is the geometry or what are</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8521-2
00:42:21.301 --> 00:42:26.404
<v Andres Pena Castro>the possible fault in styles
that happened in Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8539-0
00:42:27.914 --> 00:42:31.859
<v Andres Pena Castro>Now coming back to my first
question is how seismically</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8539-1
00:42:31.859 --> 00:42:34.324
<v Andres Pena Castro>active is the Antarctic
continent?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8553-0
00:42:34.594 --> 00:42:37.905
<v Andres Pena Castro>According with our seismic
catalog, there at least 60,000</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8553-1
00:42:37.905 --> 00:42:38.304
<v Andres Pena Castro>events.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8574-0
00:42:38.614 --> 00:42:43.138
<v Andres Pena Castro>The magnitudes of those events
ranges from -1 up to 2,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8574-1
00:42:43.138 --> 00:42:43.844
<v Andres Pena Castro>up to 4.5.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8644-0
00:42:44.694 --> 00:42:49.024
<v Andres Pena Castro>We build this catalog using only
public data and the events come</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8644-1
00:42:49.024 --> 00:42:53.154
<v Andres Pena Castro>from different sources and some
of them are priced vary, some</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8644-2
00:42:53.154 --> 00:42:57.151
<v Andres Pena Castro>are are volcanic and some
are tectonic and we</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8644-3
00:42:57.151 --> 00:43:00.548
<v Andres Pena Castro>encourage the seismological
community to use these</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8644-4
00:43:00.548 --> 00:43:04.744
<v Andres Pena Castro>exploratory catalog
as a starting point for future</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8644-5
00:43:04.744 --> 00:43:08.142
<v Andres Pena Castro>studies and to improve our
understanding of Antarctic</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8644-6
00:43:08.142 --> 00:43:08.874
<v Andres Pena Castro>seismicity.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8648-0
00:43:11.044 --> 00:43:11.694
<v Andres Pena Castro>Thank you </v>

657bbe8b-2686-4465-ac8b-0602478b5742/8654-0
00:43:11.704 --> 00:43:13.654
<v Andres Pena Castro>and I will take any questions.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8658-0
00:43:24.554 --> 00:43:24.904
<v gs-camft-bldg19yosemiteconfroom2030>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8672-0
00:43:24.914 --> 00:43:28.316
<v gs-camft-bldg19yosemiteconfroom2030>So we'll start by taking any
questions there might be in the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8672-1
00:43:28.316 --> 00:43:28.594
<v gs-camft-bldg19yosemiteconfroom2030>room.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8674-0
00:43:31.414 --> 00:43:31.574
<v gs-camft-bldg19yosemiteconfroom2030>They.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8687-0
00:43:33.214 --> 00:43:36.474
<v gs-camft-bldg19yosemiteconfroom2030>I have a question alright in the
garden time.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8695-0
00:43:36.924 --> 00:43:41.014
<v gs-camft-bldg19yosemiteconfroom2030>Does your study have any
implications for climate change?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8709-0
00:43:44.564 --> 00:43:45.324
<v Andres Pena Castro>Whoops, is my.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8717-0
00:43:44.564 --> 00:43:47.863
<v gs-camft-bldg19yosemiteconfroom2030>How how much climate change
might be out affecting</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8717-1
00:43:47.863 --> 00:43:48.574
<v gs-camft-bldg19yosemiteconfroom2030>Antarctica?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8760-0
00:43:49.864 --> 00:43:54.953
<v Andres Pena Castro>So at the moment the data set
that we build is only from 2000</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8760-1
00:43:54.953 --> 00:44:00.207
<v Andres Pena Castro>and 2020, so there might be some
implication if we can classify</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8760-2
00:44:00.207 --> 00:44:03.654
<v Andres Pena Castro>better the ice quakes in certain
regions.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8810-0
00:44:04.084 --> 00:44:08.090
<v Andres Pena Castro>If there is a, let's say, a more
stable seismic that way in a</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8810-1
00:44:08.090 --> 00:44:12.226
<v Andres Pena Castro>specific area where we see ice
quakes or we observe issues, for</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8810-2
00:44:12.226 --> 00:44:16.361
<v Andres Pena Castro>example, Mount Erebus has a lot
of ice quakes, but there's also</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8810-3
00:44:16.361 --> 00:44:17.524
<v Andres Pena Castro>volcanic activity.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8845-0
00:44:17.534 --> 00:44:21.984
<v Andres Pena Castro>So if there is some sort of
like, umm, let's let's say,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8845-1
00:44:21.984 --> 00:44:27.149
<v Andres Pena Castro>warming up of a glacier, then in
theory we should be able to see</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8845-2
00:44:27.149 --> 00:44:29.294
<v Andres Pena Castro>some different type of ice.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8862-0
00:44:29.304 --> 00:44:33.398
<v Andres Pena Castro>Craig activity, but someone has
to look in more detail to the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8862-1
00:44:33.398 --> 00:44:34.784
<v Andres Pena Castro>catalogue in general.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8865-0
00:44:37.234 --> 00:44:37.484
<v gs-camft-bldg19yosemiteconfroom2030>Thank you.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8876-0
00:44:40.254 --> 00:44:43.644
<v gs-camft-bldg19yosemiteconfroom2030>OK, there is a question from
Sumant.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8887-0
00:44:43.654 --> 00:44:45.994
<v gs-camft-bldg19yosemiteconfroom2030>Do you want to unmute and ask
your question?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8889-0
00:44:47.184 --> 00:44:48.264
<v Jha, Sumant (Contractor)>Yeah, I'm here.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8908-0
00:44:48.344 --> 00:44:52.055
<v Jha, Sumant (Contractor)>Thank you for the great talk,
Andreas, and it was almost very</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8908-1
00:44:52.055 --> 00:44:52.354
<v Jha, Sumant (Contractor)>good.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8912-0
00:44:52.884 --> 00:44:53.974
<v Jha, Sumant (Contractor)>I had a question.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8935-0
00:44:53.984 --> 00:44:57.788
<v Jha, Sumant (Contractor)>So you mentioned that we are
going to have a better covers</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8935-1
00:44:57.788 --> 00:45:00.624
<v Jha, Sumant (Contractor)>scientific coverage and in West
Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8977-0
00:45:02.834 --> 00:45:06.483
<v Jha, Sumant (Contractor)>I'm sorry if I missed that, but
did you give us a timeline and</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8977-1
00:45:06.483 --> 00:45:10.075
<v Jha, Sumant (Contractor)>the geography of where we are
going to have this coverage and</v>

657bbe8b-2686-4465-ac8b-0602478b5742/8977-2
00:45:10.075 --> 00:45:11.754
<v Jha, Sumant (Contractor)>from when, I mean until then?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9002-0
00:45:12.754 --> 00:45:17.757
<v Andres Pena Castro>Ohh so I know that there are a
couple of stations being</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9002-1
00:45:17.757 --> 00:45:22.402
<v Andres Pena Castro>deployed by the British
illogical survey in Western</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9002-2
00:45:22.402 --> 00:45:23.384
<v Andres Pena Castro>Antarctica.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9024-0
00:45:23.864 --> 00:45:28.362
<v Andres Pena Castro>I don't know if that will be
public and if they becomes</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9011-0
00:45:24.434 --> 00:45:24.554
<v Jha, Sumant (Contractor)>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9024-1
00:45:28.362 --> 00:45:28.924
<v Andres Pena Castro>public.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9034-0
00:45:28.934 --> 00:45:31.874
<v Andres Pena Castro>I don't know when I can share
those papers with you.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9071-0
00:45:31.884 --> 00:45:35.738
<v Andres Pena Castro>They have already published a
couple of papers related to ice</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9071-1
00:45:35.738 --> 00:45:39.717
<v Andres Pena Castro>quick activity in a specific ice
cream place, but I don't think</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9071-2
00:45:39.717 --> 00:45:41.954
<v Andres Pena Castro>that's available as soon right
now.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9101-0
00:45:42.964 --> 00:45:47.138
<v Andres Pena Castro>Uh, they they also have a
distributed acoustic sensing</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9101-1
00:45:47.138 --> 00:45:52.070
<v Andres Pena Castro>cable there, but the time window
for when they tackle, they wish</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9101-2
00:45:52.070 --> 00:45:52.904
<v Andres Pena Castro>that we do.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9115-0
00:45:52.914 --> 00:45:55.464
<v Andres Pena Castro>They use and it's not on the top
of my head.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9118-0
00:45:57.144 --> 00:45:57.664
<v Jha, Sumant (Contractor)>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9131-0
00:45:58.174 --> 00:46:00.754
<v Jha, Sumant (Contractor)>Can I follow up about the ice
quick question?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9148-0
00:46:01.494 --> 00:46:04.742
<v Jha, Sumant (Contractor)>Would you be able to speak a bit
about what you see from your</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9148-1
00:46:04.742 --> 00:46:05.004
<v Jha, Sumant (Contractor)>data?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9168-0
00:46:05.014 --> 00:46:09.114
<v Jha, Sumant (Contractor)>Like how the volcanic and
magmatic activity has affected</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9168-1
00:46:09.114 --> 00:46:11.344
<v Jha, Sumant (Contractor)>the earthquakes on Ross Island.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9210-0
00:46:11.414 --> 00:46:15.614
<v Jha, Sumant (Contractor)>Because, you know, we showed you
showed a slide in the last where</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9210-1
00:46:15.614 --> 00:46:19.431
<v Jha, Sumant (Contractor)>there were so many activities
around Mount Erebus and Mount</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9188-0
00:46:15.704 --> 00:46:15.904
<v Andres Pena Castro>Yep.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9199-0
00:46:19.334 --> 00:46:19.534
<v Andres Pena Castro>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9210-2
00:46:19.431 --> 00:46:22.994
<v Jha, Sumant (Contractor)>Arabis inactive for last 6.5
million years at time, so.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9211-0
00:46:23.714 --> 00:46:23.914
<v Andres Pena Castro>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9237-0
00:46:25.924 --> 00:46:30.811
<v Andres Pena Castro>I I have not yet, let's say
classify what type of events I'm</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9237-1
00:46:30.811 --> 00:46:32.894
<v Andres Pena Castro>I'm I'm finding in Airbus.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9266-0
00:46:33.504 --> 00:46:37.044
<v Andres Pena Castro>I we are finding for sure some
ice quakes and some other ones,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9266-1
00:46:37.044 --> 00:46:40.134
<v Andres Pena Castro>but I have that's the project
for let's say this year.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9286-0
00:46:40.674 --> 00:46:43.848
<v Andres Pena Castro>I'm gonna look into more detail
in that so I know that I'm</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9286-1
00:46:43.848 --> 00:46:46.214
<v Andres Pena Castro>detecting some explosions, some
ice quakes.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9302-0
00:46:46.224 --> 00:46:49.652
<v Andres Pena Castro>It might be some deep events as
well, but how many are of each</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9302-1
00:46:49.652 --> 00:46:50.414
<v Andres Pena Castro>of those ones?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9308-0
00:46:50.424 --> 00:46:51.834
<v Andres Pena Castro>I cannot tell you right now.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9311-0
00:46:53.604 --> 00:46:54.044
<v Jha, Sumant (Contractor)>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9328-0
00:46:54.104 --> 00:46:59.054
<v Jha, Sumant (Contractor)>And what about the remnant
seismic signature?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9347-0
00:46:59.064 --> 00:47:03.118
<v Jha, Sumant (Contractor)>Slow, for example, Ross Island
has, you know, mount that ARB,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9390-0
00:47:02.144 --> 00:47:02.254
<v Andres Pena Castro>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9347-1
00:47:03.118 --> 00:47:05.144
<v Jha, Sumant (Contractor)>Mount Bird, Hotpoint peninsula.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9355-0
00:47:05.154 --> 00:47:07.024
<v Jha, Sumant (Contractor)>They have been active in past.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9394-0
00:47:07.634 --> 00:47:10.997
<v Jha, Sumant (Contractor)>So are you able to take out
those remain remnant seismic</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9394-1
00:47:10.997 --> 00:47:14.360
<v Jha, Sumant (Contractor)>pages from your signals from
using your machine learning</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9394-2
00:47:14.360 --> 00:47:17.604
<v Jha, Sumant (Contractor)>technique or I don't know, you
know combined together?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9410-0
00:47:18.674 --> 00:47:21.274
<v Andres Pena Castro>Sorry, just say remenant size
big signals of where.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9408-0
00:47:22.374 --> 00:47:22.704
<v Jha, Sumant (Contractor)>Right.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9459-0
00:47:22.714 --> 00:47:27.281
<v Jha, Sumant (Contractor)>So for us Island has Mount,
Mount Berg, Hotpoint Peninsula,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9423-0
00:47:24.584 --> 00:47:24.784
<v Andres Pena Castro>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9434-0
00:47:26.824 --> 00:47:27.554
<v Andres Pena Castro>Ohh yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9459-1
00:47:27.281 --> 00:47:31.695
<v Jha, Sumant (Contractor)>so they all you know, they all
contribute to your seismic</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9438-0
00:47:27.564 --> 00:47:28.514
<v Andres Pena Castro>Yeah, yeah, yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9442-0
00:47:28.524 --> 00:47:29.174
<v Andres Pena Castro>There correct.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9450-0
00:47:29.184 --> 00:47:29.424
<v Andres Pena Castro>Got it.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9459-2
00:47:31.695 --> 00:47:32.304
<v Jha, Sumant (Contractor)>signals.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9466-0
00:47:33.174 --> 00:47:33.844
<v Andres Pena Castro>Yes, correct.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9487-0
00:47:33.794 --> 00:47:39.440
<v Jha, Sumant (Contractor)>I so if you are just focusing on
Mount Erebus, how are you going</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9480-0
00:47:37.394 --> 00:47:37.594
<v Andres Pena Castro>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9487-1
00:47:39.440 --> 00:47:41.264
<v Jha, Sumant (Contractor)>to take them away of?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9493-0
00:47:41.354 --> 00:47:42.794
<v Jha, Sumant (Contractor)>You're doing a machine learning
technique.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9495-0
00:47:42.804 --> 00:47:42.964
<v Jha, Sumant (Contractor)>I'm.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9519-0
00:47:42.974 --> 00:47:45.208
<v Jha, Sumant (Contractor)>I'm in no wise on machine
learning, so I just want to</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9514-0
00:47:45.074 --> 00:47:45.744
<v Andres Pena Castro>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9519-1
00:47:45.208 --> 00:47:45.414
<v Jha, Sumant (Contractor)>know.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9516-0
00:47:46.154 --> 00:47:46.544
<v Andres Pena Castro>No.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9557-0
00:47:46.554 --> 00:47:50.596
<v Andres Pena Castro>So I mean in our so weather what
we plan to do for month Airbus</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9557-1
00:47:50.596 --> 00:47:54.764
<v Andres Pena Castro>in the near future is that we're
gonna improve, for example, have</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9557-2
00:47:54.764 --> 00:47:57.164
<v Andres Pena Castro>a better velocity model to use
there.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9596-0
00:47:57.174 --> 00:48:01.125
<v Andres Pena Castro>So we have a better location,
maybe try some double difference</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9596-1
00:48:01.125 --> 00:48:04.762
<v Andres Pena Castro>location algorithms so we can
pinpoint exactly like which</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9596-2
00:48:04.762 --> 00:48:07.144
<v Andres Pena Castro>places are more active in it
enables.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9626-0
00:48:07.374 --> 00:48:11.350
<v Andres Pena Castro>Maybe we have some activity, not
only monterra boots, but also in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9626-1
00:48:11.350 --> 00:48:14.784
<v Andres Pena Castro>Montverde or Montero or slightly
outside of Ross Island.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9639-0
00:48:14.794 --> 00:48:17.754
<v Andres Pena Castro>But that's something that we
will do in the near future.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9645-0
00:48:19.334 --> 00:48:19.794
<v Jha, Sumant (Contractor)>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9647-0
00:48:19.804 --> 00:48:20.564
<v Jha, Sumant (Contractor)>That sounds good.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9649-0
00:48:20.664 --> 00:48:20.974
<v Jha, Sumant (Contractor)>Thank you.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9660-0
00:48:23.744 --> 00:48:26.084
<v gs-camft-bldg19yosemiteconfroom2030>And it looks like Clara Yun has
a question.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9666-0
00:48:30.684 --> 00:48:31.024
<v gs-camft-bldg19yosemiteconfroom2030>Click.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9664-0
00:48:30.784 --> 00:48:31.364
<v Yoon, Clara E>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9668-0
00:48:31.424 --> 00:48:31.694
<v Yoon, Clara E>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9670-0
00:48:31.704 --> 00:48:32.074
<v Yoon, Clara E>Thanks.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9679-0
00:48:32.264 --> 00:48:33.914
<v Yoon, Clara E>Thanks Andreas for the great
talk.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9751-0
00:48:34.784 --> 00:48:39.140
<v Yoon, Clara E>I'm just curious about how long
did it take you to like what was</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9751-1
00:48:39.140 --> 00:48:43.160
<v Yoon, Clara E>the runtime for processing and
like creating the Antarctica</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9751-2
00:48:43.160 --> 00:48:47.181
<v Yoon, Clara E>catalog because I've used a lot
of the same methods and I'm</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9751-3
00:48:47.181 --> 00:48:50.867
<v Yoon, Clara E>surprised you're able to run
real on, you know, all of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9728-0
00:48:48.314 --> 00:48:48.534
<v Andres Pena Castro>That.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9751-4
00:48:50.867 --> 00:48:54.619
<v Yoon, Clara E>Antarctica or like 20 years
because in my experience it</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9751-5
00:48:54.619 --> 00:48:56.294
<v Yoon, Clara E>takes a long time to run.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9768-0
00:48:56.304 --> 00:48:58.164
<v Yoon, Clara E>So yeah, I'm just curious to run
the time.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9766-0
00:48:56.844 --> 00:48:58.774
<v Andres Pena Castro>Ah, OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9782-0
00:48:58.784 --> 00:49:02.210
<v Andres Pena Castro>So yeah, actually so about the
running time of creating the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9782-1
00:49:02.210 --> 00:49:03.294
<v Andres Pena Castro>earthquake catalog.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9803-0
00:49:03.304 --> 00:49:07.845
<v Andres Pena Castro>I will say that the face speaker
was one of the steps that did</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9803-1
00:49:07.845 --> 00:49:08.854
<v Andres Pena Castro>not take long.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9825-0
00:49:08.984 --> 00:49:13.155
<v Andres Pena Castro>The magnitudes and location
where OK it was like sometime</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9825-1
00:49:13.155 --> 00:49:16.534
<v Andres Pena Castro>but not long but real does take
a lot of time.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9852-0
00:49:17.044 --> 00:49:22.070
<v Andres Pena Castro>That one, I have to say that we
have a super computer and what</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9852-1
00:49:22.070 --> 00:49:24.304
<v Andres Pena Castro>with this we assign like to.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9865-0
00:49:24.574 --> 00:49:27.344
<v Andres Pena Castro>I think it was like each note a
separate month.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9880-0
00:49:27.354 --> 00:49:31.484
<v Andres Pena Castro>So we have 12 months multiplied
by 21 and one.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9916-0
00:49:31.554 --> 00:49:35.614
<v Andres Pena Castro>For each of those notes was in
charge of one month of data, but</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9916-1
00:49:35.614 --> 00:49:39.609
<v Andres Pena Castro>sometimes it takes like a whole
week or a week, two weeks just</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9916-2
00:49:39.609 --> 00:49:40.624
<v Andres Pena Castro>to process that.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9960-0
00:49:40.634 --> 00:49:44.538
<v Andres Pena Castro>So I would say real was the one
that took longer to run and also</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9960-1
00:49:44.538 --> 00:49:48.441
<v Andres Pena Castro>don't know how did the data took
a little bit of time too, but I</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9960-2
00:49:48.441 --> 00:49:51.984
<v Andres Pena Castro>was not using a supercomputer
for that step at that point.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9964-0
00:49:51.994 --> 00:49:53.494
<v Andres Pena Castro>So yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9965-0
00:49:55.004 --> 00:49:55.354
<v Yoon, Clara E>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9967-0
00:49:55.364 --> 00:49:55.634
<v Yoon, Clara E>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9969-0
00:49:55.644 --> 00:49:55.994
<v Yoon, Clara E>Do you?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9985-0
00:49:56.004 --> 00:49:59.288
<v Yoon, Clara E>Do you just remember offhand
what, like grid spacing you used</v>

657bbe8b-2686-4465-ac8b-0602478b5742/9985-1
00:49:59.288 --> 00:49:59.764
<v Yoon, Clara E>for real?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10003-0
00:50:00.334 --> 00:50:04.104
<v Andres Pena Castro>Umm, let me check my the.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10024-0
00:50:03.184 --> 00:50:06.108
<v Yoon, Clara E>I mean, it's not a big deal if
you don't remember, but that's I</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10028-0
00:50:05.774 --> 00:50:09.364
<v Andres Pena Castro>A thing is like why I think I
have like one point.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10024-1
00:50:06.108 --> 00:50:07.204
<v Yoon, Clara E>had the same experience.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10068-0
00:50:09.374 --> 00:50:15.738
<v Andres Pena Castro>Ohh the grid size which I think
was 1.6 was the total and was</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10068-1
00:50:15.738 --> 00:50:22.204
<v Andres Pena Castro>like .01 or .02 and then so it
was really it was really dense.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10077-0
00:50:22.214 --> 00:50:25.824
<v Andres Pena Castro>Let's say the horizontal part,
but the depth.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10100-0
00:50:25.834 --> 00:50:29.682
<v Andres Pena Castro>We use the steps of I think was
10 kilometers up to 60 or 100</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10097-0
00:50:29.234 --> 00:50:29.834
<v Yoon, Clara E>Right.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10100-1
00:50:29.682 --> 00:50:30.364
<v Andres Pena Castro>kilometers.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10103-0
00:50:29.954 --> 00:50:30.554
<v Yoon, Clara E>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10119-0
00:50:30.794 --> 00:50:32.094
<v Andres Pena Castro>So yeah, it was something like
that.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10149-0
00:50:31.044 --> 00:50:34.593
<v Yoon, Clara E>Yeah, I found that I had to use
like fine grid spacing for real</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10149-1
00:50:34.593 --> 00:50:38.032
<v Yoon, Clara E>to get it to work, and it also
took me a long time to run, so</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10149-2
00:50:38.032 --> 00:50:40.804
<v Yoon, Clara E>I'm actively looking for
alternative associators.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10155-0
00:50:40.844 --> 00:50:41.784
<v Yoon, Clara E>So yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10157-0
00:50:41.834 --> 00:50:42.154
<v Yoon, Clara E>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10163-0
00:50:41.854 --> 00:50:42.664
<v Andres Pena Castro>Uh, sure, yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10170-0
00:50:42.164 --> 00:50:42.554
<v Yoon, Clara E>Thank you.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10173-0
00:50:42.674 --> 00:50:44.404
<v Andres Pena Castro>We got we can discuss about that
later.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10194-0
00:50:44.414 --> 00:50:46.004
<v Andres Pena Castro>If you want to, I have like a
lot of like.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10181-0
00:50:44.754 --> 00:50:45.214
<v Yoon, Clara E>Right, right.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10187-0
00:50:45.224 --> 00:50:45.504
<v Yoon, Clara E>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10189-0
00:50:45.514 --> 00:50:46.164
<v Yoon, Clara E>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10192-0
00:50:46.254 --> 00:50:46.864
<v Yoon, Clara E>OK, great.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10195-0
00:50:46.874 --> 00:50:47.234
<v Yoon, Clara E>Thank you.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10201-0
00:50:49.164 --> 00:50:49.834
<v gs-camft-bldg19yosemiteconfroom2030>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10207-0
00:50:49.844 --> 00:50:51.244
<v gs-camft-bldg19yosemiteconfroom2030>Margaret, do you wanna ask your
question?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10215-0
00:50:53.324 --> 00:50:54.304
<v Glasgow, Margaret E>Yeah, I'd love to.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10224-0
00:50:55.044 --> 00:50:56.614
<v Glasgow, Margaret E>Thanks for the great talk,
Andres.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10249-0
00:50:56.944 --> 00:51:00.573
<v Glasgow, Margaret E>So my question is related to the
ice streams which I don't know</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10249-1
00:51:00.573 --> 00:51:03.294
<v Glasgow, Margaret E>very much about and I don't know
much about it.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10251-0
00:51:03.304 --> 00:51:03.774
<v Glasgow, Margaret E>Squeaks.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10308-0
00:51:03.784 --> 00:51:08.782
<v Glasgow, Margaret E>But I was curious what do you
think controls whether or not an</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10308-1
00:51:08.782 --> 00:51:13.860
<v Glasgow, Margaret E>ice cream is seismogenic or sort
of like is it the speed of the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10308-2
00:51:13.860 --> 00:51:18.461
<v Glasgow, Margaret E>ice cream once it's a fast
enough speed that it's able to</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10308-3
00:51:18.461 --> 00:51:22.824
<v Glasgow, Margaret E>generate a seismic signal and
sort of nest it in that?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10314-0
00:51:22.904 --> 00:51:25.714
<v Glasgow, Margaret E>Are there a seismic signals?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10325-0
00:51:27.124 --> 00:51:29.834
<v Glasgow, Margaret E>I mean, I guess yes, there are.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10331-0
00:51:29.004 --> 00:51:29.244
<v Andres Pena Castro>That.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10328-0
00:51:29.844 --> 00:51:30.654
<v Glasgow, Margaret E>But I I guess.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10338-0
00:51:30.664 --> 00:51:31.974
<v Glasgow, Margaret E>Can you say anything about that?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10351-0
00:51:32.184 --> 00:51:35.172
<v Glasgow, Margaret E>You know, sort of what creates
seismic genesis at some value</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10351-1
00:51:35.172 --> 00:51:35.564
<v Glasgow, Margaret E>streams.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10354-0
00:51:36.294 --> 00:51:36.824
<v Andres Pena Castro>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10357-0
00:51:37.154 --> 00:51:38.404
<v Andres Pena Castro>That's a good question.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10394-0
00:51:38.414 --> 00:51:42.202
<v Andres Pena Castro>I'm not cryospheric person
myself, but I know that I mean,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10394-1
00:51:42.202 --> 00:51:46.439
<v Andres Pena Castro>like you can break apart ice and
ice at lower velocities than our</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10394-2
00:51:46.439 --> 00:51:48.814
<v Andres Pena Castro>normal to say rock rock
interaction.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10400-0
00:51:48.824 --> 00:51:50.294
<v Andres Pena Castro>So they cheat.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10417-0
00:51:50.304 --> 00:51:53.614
<v Andres Pena Castro>Wave of ice is lower, so it
should be easier to break apart</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10417-1
00:51:53.614 --> 00:51:53.834
<v Andres Pena Castro>ice.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10420-0
00:51:53.904 --> 00:51:54.814
<v Andres Pena Castro>So that's one thing.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10437-0
00:51:54.824 --> 00:51:58.513
<v Andres Pena Castro>However, it's important to
mention that the type of ice</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10437-1
00:51:58.513 --> 00:52:00.094
<v Andres Pena Castro>quakes some of them not.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10479-0
00:52:00.104 --> 00:52:03.867
<v Andres Pena Castro>All of them might be related to
something called basal ice</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10479-1
00:52:03.867 --> 00:52:07.886
<v Andres Pena Castro>quakes, but also when you have
the, let's say you have the ice</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10479-2
00:52:07.886 --> 00:52:11.713
<v Andres Pena Castro>bed interactions, so you have
ice and rock sleeping towards</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10479-3
00:52:11.713 --> 00:52:12.414
<v Andres Pena Castro>each other.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10505-0
00:52:12.564 --> 00:52:16.440
<v Andres Pena Castro>That time I have generate
different type of signal that we</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10505-1
00:52:16.440 --> 00:52:20.513
<v Andres Pena Castro>have observing and when we're
looking at iceberg, signals are</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10505-2
00:52:20.513 --> 00:52:21.564
<v Andres Pena Castro>highly variable.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10544-0
00:52:21.574 --> 00:52:26.128
<v Andres Pena Castro>They have different flavors and
different magnitudes and maybe I</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10544-1
00:52:26.128 --> 00:52:30.121
<v Andres Pena Castro>can share my other screen
because so the type of signals</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10544-2
00:52:30.121 --> 00:52:34.044
<v Andres Pena Castro>that we're finding are the ones
that only generate PNS.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10548-0
00:52:34.054 --> 00:52:35.484
<v Andres Pena Castro>We've arrivals. What?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10563-0
00:52:35.494 --> 00:52:40.604
<v Andres Pena Castro>I know that also ice quakes can
generate a harmonic tremors too.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10576-0
00:52:41.444 --> 00:52:42.624
<v Andres Pena Castro>There are a couple of other
ones.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10585-0
00:52:42.754 --> 00:52:47.034
<v Andres Pena Castro>Ohio Glacial earthquakes firm
quakes and so on and so forth.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10601-0
00:52:47.044 --> 00:52:50.424
<v Andres Pena Castro>So let me just I can show you a
quick slide of that.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10606-0
00:52:50.524 --> 00:52:51.574
<v Andres Pena Castro>Where is the slide?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10608-0
00:52:51.804 --> 00:52:52.264
<v Andres Pena Castro>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10616-0
00:52:52.864 --> 00:52:54.564
<v Andres Pena Castro>Can you see my PDF?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10620-0
00:52:55.134 --> 00:52:55.364
<v Glasgow, Margaret E>Yes.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10637-0
00:52:56.514 --> 00:53:00.285
<v Andres Pena Castro>These are just four types of
flavor of what ice quakes looks</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10637-1
00:53:00.285 --> 00:53:01.644
<v Andres Pena Castro>like in a seismograph.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10646-0
00:53:02.624 --> 00:53:05.414
<v Andres Pena Castro>So how are these generated?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10652-0
00:53:05.424 --> 00:53:06.854
<v Andres Pena Castro>Some of them are.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10664-0
00:53:07.004 --> 00:53:09.909
<v Andres Pena Castro>For example, I have here
capsizing with iceberg</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10664-1
00:53:09.909 --> 00:53:10.514
<v Andres Pena Castro>somewhere.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10668-0
00:53:10.524 --> 00:53:12.984
<v Andres Pena Castro>Once are more related to.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10701-0
00:53:14.784 --> 00:53:19.718
<v Andres Pena Castro>Cliff edges of tabular icebergs
undergo glancing and strike slip</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10701-1
00:53:19.718 --> 00:53:23.893
<v Andres Pena Castro>collision, so there are
different manifestation of ice</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10701-2
00:53:23.893 --> 00:53:24.424
<v Andres Pena Castro>quakes.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10722-0
00:53:24.434 --> 00:53:27.914
<v Andres Pena Castro>So which one I'm looking at,
it's hard to tell, but it has to</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10722-1
00:53:27.914 --> 00:53:28.924
<v Andres Pena Castro>generate some PNS.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10728-0
00:53:28.934 --> 00:53:29.864
<v Andres Pena Castro>We've arrival that one.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10735-0
00:53:29.874 --> 00:53:30.214
<v Andres Pena Castro>I can say.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10738-0
00:53:30.784 --> 00:53:32.084
<v Glasgow, Margaret E>OK, alright, thank you.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10739-0
00:53:32.194 --> 00:53:32.434
<v Andres Pena Castro>There.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10751-0
00:53:38.774 --> 00:53:40.464
<v gs-camft-bldg19yosemiteconfroom2030>Any other questions in the room?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10756-0
00:53:40.474 --> 00:53:40.944
<v gs-camft-bldg19yosemiteconfroom2030>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10758-0
00:53:41.014 --> 00:53:41.624
<v gs-camft-bldg19yosemiteconfroom2030>Go ahead. Right.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10760-0
00:53:42.294 --> 00:53:42.524
<v gs-camft-bldg19yosemiteconfroom2030>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10800-0
00:53:42.534 --> 00:53:46.203
<v gs-camft-bldg19yosemiteconfroom2030>Thanks for a tastic talk, so I
know it's difficult with all the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10800-1
00:53:46.203 --> 00:53:49.527
<v gs-camft-bldg19yosemiteconfroom2030>temporary networks, but can you
give me some sense of the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10800-2
00:53:49.527 --> 00:53:52.794
<v gs-camft-bldg19yosemiteconfroom2030>magnitude completeness for the
entire continent, period.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10807-0
00:53:52.554 --> 00:53:55.734
<v Andres Pena Castro>I no, I don't think that's
possible.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10875-0
00:53:56.544 --> 00:54:00.870
<v Andres Pena Castro>Like I I the the simple reason
that I say no is that I cannot</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10875-1
00:54:00.870 --> 00:54:05.126
<v Andres Pena Castro>do a magnitude of complete this
if I have like 3 stations in</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10875-2
00:54:05.126 --> 00:54:09.592
<v Andres Pena Castro>really small spot, but then the
next year I have three stations</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10875-3
00:54:09.592 --> 00:54:14.197
<v Andres Pena Castro>at like I don't know hundreds of
kilometers away from each other,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10875-4
00:54:14.197 --> 00:54:18.034
<v Andres Pena Castro>so it's not not uniform in
space, not uniform in time.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10897-0
00:54:18.124 --> 00:54:22.268
<v Andres Pena Castro>So it's really hard to put, you
know, say the mighty of</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10897-1
00:54:22.268 --> 00:54:24.784
<v Andres Pena Castro>completeness in this region is
X.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10929-0
00:54:24.884 --> 00:54:28.733
<v Andres Pena Castro>Maybe if the deployment was for
like 3 years maybe then we can</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10929-1
00:54:28.733 --> 00:54:32.337
<v Andres Pena Castro>say something, but if if they
are raised only deploy for a</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10929-2
00:54:32.337 --> 00:54:34.414
<v Andres Pena Castro>month then it's more
complicated.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10962-0
00:54:35.744 --> 00:54:39.316
<v Andres Pena Castro>The other thing is that I know
that there are more events that</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10962-1
00:54:39.316 --> 00:54:42.887
<v Andres Pena Castro>what we have in our catalog, but
a lot of those events did not</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10962-2
00:54:42.887 --> 00:54:45.154
<v Andres Pena Castro>pass our criterias or quality
controls.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10997-0
00:54:45.614 --> 00:54:49.600
<v Andres Pena Castro>So it's, I know maybe in Mount
Erebus, maybe the only place</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10997-1
00:54:49.600 --> 00:54:53.786
<v Andres Pena Castro>where it could be possible to do
that, but I I did, we did not</v>

657bbe8b-2686-4465-ac8b-0602478b5742/10997-2
00:54:53.786 --> 00:54:56.044
<v Andres Pena Castro>calculate that, at least not
yet.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11000-0
00:54:57.864 --> 00:54:58.154
<v gs-camft-bldg19yosemiteconfroom2030>Thank you.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11013-0
00:55:01.764 --> 00:55:04.094
<v gs-camft-bldg19yosemiteconfroom2030>Alright, not seeing any more
questions.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11023-0
00:55:04.104 --> 00:55:06.844
<v gs-camft-bldg19yosemiteconfroom2030>Let's thank our speaker one more
time for fantastic talk.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11047-0
00:55:22.354 --> 00:55:23.084
<v gs-camft-bldg19yosemiteconfroom2030>You should be able to.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11051-0
00:55:23.174 --> 00:55:24.094
<v gs-camft-bldg19yosemiteconfroom2030>You know, that's the thing.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11054-0
00:55:24.984 --> 00:55:25.364
<v gs-camft-bldg19yosemiteconfroom2030>Yeah, yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11064-0
00:55:28.274 --> 00:55:29.464
<v Glasgow, Margaret E>Nice talk. Undress.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11075-0
00:55:31.744 --> 00:55:32.194
<v Jha, Sumant (Contractor)>Britta.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11076-0
00:55:31.784 --> 00:55:32.144
<v Andres Pena Castro>Thanks.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11087-0
00:55:33.884 --> 00:55:35.794
<v Andres Pena Castro>Did you think I went too fast?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11092-0
00:55:34.094 --> 00:55:34.614
<v Glasgow, Margaret E>Umm.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11111-0
00:55:36.124 --> 00:55:37.404
<v Andres Pena Castro>A couple of places he was OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11104-0
00:55:36.424 --> 00:55:37.674
<v Glasgow, Margaret E>Oh no, I thought it was.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11108-0
00:55:37.944 --> 00:55:38.834
<v Glasgow, Margaret E>No, it was great.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11117-0
00:55:38.844 --> 00:55:39.394
<v Glasgow, Margaret E>It was great.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11121-0
00:55:39.394 --> 00:55:39.764
<v Andres Pena Castro>No.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11131-0
00:55:39.894 --> 00:55:40.754
<v Andres Pena Castro>OK. Thanks.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11143-0
00:55:40.044 --> 00:55:42.666
<v Glasgow, Margaret E>It's always better to be like a
couple minutes shorter than a</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11143-1
00:55:42.666 --> 00:55:43.934
<v Glasgow, Margaret E>couple minutes over, you know?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11161-0
00:55:43.944 --> 00:55:45.774
<v Glasgow, Margaret E>So umm yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11147-0
00:55:44.854 --> 00:55:45.254
<v Andres Pena Castro>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11159-0
00:55:45.264 --> 00:55:46.924
<v Andres Pena Castro>No, I didn't have a lot of
slides.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11186-0
00:55:46.934 --> 00:55:50.012
<v Andres Pena Castro>I have like 30 something slides
but I have like really dense</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11186-1
00:55:50.012 --> 00:55:52.484
<v Andres Pena Castro>figure so that's what I have to
like this stuff.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11209-0
00:55:52.494 --> 00:55:55.404
<v Andres Pena Castro>Try to explain them really about
yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11197-0
00:55:54.004 --> 00:55:54.654
<v Glasgow, Margaret E>Oh yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11212-0
00:55:54.704 --> 00:55:56.874
<v Glasgow, Margaret E>I mean, I think it, I think it
was 45 minutes.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11224-0
00:55:56.884 --> 00:55:58.414
<v Glasgow, Margaret E>So I mean, that's like spot on.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11219-0
00:55:57.484 --> 00:55:57.894
<v Andres Pena Castro>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11221-0
00:55:57.944 --> 00:55:58.454
<v Andres Pena Castro>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11229-0
00:55:58.524 --> 00:55:58.644
<v Glasgow, Margaret E>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11226-0
00:55:58.844 --> 00:55:59.754
<v Andres Pena Castro>OK, perfect.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11245-0
00:55:59.734 --> 00:56:04.214
<v Glasgow, Margaret E>Umm 11:30 to yeah, it was like
45 minutes.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11233-0
00:55:59.764 --> 00:56:00.214
<v Andres Pena Castro>Sounds good.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11247-0
00:56:04.224 --> 00:56:04.304
<v Glasgow, Margaret E>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11254-0
00:56:04.944 --> 00:56:06.854
<v Glasgow, Margaret E>Umm, so that's perfect.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11252-0
00:56:05.004 --> 00:56:06.084
<v Andres Pena Castro>Yeah, OK, cool.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11266-0
00:56:07.464 --> 00:56:09.894
<v Glasgow, Margaret E>So the schedule here, I'll check
it right now.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11270-0
00:56:10.964 --> 00:56:11.204
<v Andres Pena Castro>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11273-0
00:56:11.734 --> 00:56:12.784
<v Glasgow, Margaret E>One last time?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11276-0
00:56:14.334 --> 00:56:14.704
<v Glasgow, Margaret E>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11287-0
00:56:14.714 --> 00:56:16.044
<v Glasgow, Margaret E>So it's the same three meetings.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11293-0
00:56:16.054 --> 00:56:17.184
<v Glasgow, Margaret E>So I guess I'll hit refresh.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11295-0
00:56:18.204 --> 00:56:18.404
<v Andres Pena Castro>The.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11307-0
00:56:18.284 --> 00:56:23.834
<v Glasgow, Margaret E>Ohh and did you get an email
from Justin with?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11312-0
00:56:25.244 --> 00:56:27.174
<v Andres Pena Castro>Wait. Yours.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11316-0
00:56:28.514 --> 00:56:29.184
<v Andres Pena Castro>Give me one second.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11322-0
00:56:32.474 --> 00:56:33.244
<v Andres Pena Castro>From Justin.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11326-0
00:56:33.254 --> 00:56:33.714
<v Andres Pena Castro>Justin who?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11329-0
00:56:34.164 --> 00:56:34.554
<v Glasgow, Margaret E>Rubenstein.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11333-0
00:56:35.834 --> 00:56:36.334
<v Andres Pena Castro>Negative.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11337-0
00:56:37.564 --> 00:56:38.104
<v Glasgow, Margaret E>You did it.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11344-0
00:56:38.694 --> 00:56:41.424
<v Andres Pena Castro>No, I did list up to wait.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11347-0
00:56:39.684 --> 00:56:39.924
<v Glasgow, Margaret E>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11374-0
00:56:41.434 --> 00:56:45.184
<v Andres Pena Castro>Let me just check I got an email
here, but I know from who uh.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11369-0
00:56:43.934 --> 00:56:45.794
<v Glasgow, Margaret E>OK I I messaged.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11405-0
00:56:45.844 --> 00:56:50.144
<v Glasgow, Margaret E>I messaged him and asked him to
either send you an email or to</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11405-1
00:56:50.144 --> 00:56:53.966
<v Glasgow, Margaret E>send me a link for for the
meeting, but I haven't heard</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11403-0
00:56:53.554 --> 00:56:53.814
<v Andres Pena Castro>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11405-2
00:56:53.966 --> 00:56:55.194
<v Glasgow, Margaret E>back from him yet.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11419-0
00:56:55.204 --> 00:56:58.014
<v Glasgow, Margaret E>So, and he's not online right
now.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11417-0
00:56:55.764 --> 00:56:57.004
<v Andres Pena Castro>OK, you got it.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11429-0
00:56:58.024 --> 00:57:01.094
<v Glasgow, Margaret E>So but anyway, I will let you
go.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11426-0
00:56:59.104 --> 00:56:59.304
<v Andres Pena Castro>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11438-0
00:57:01.144 --> 00:57:02.284
<v Glasgow, Margaret E>To lunch, that was awesome.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11441-0
00:57:02.294 --> 00:57:02.514
<v Glasgow, Margaret E>Talk.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11448-0
00:57:02.524 --> 00:57:03.404
<v Glasgow, Margaret E>Thank you so much.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11452-0
00:57:03.414 --> 00:57:04.204
<v Glasgow, Margaret E>I appreciate it.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11461-0
00:57:03.424 --> 00:57:05.384
<v Andres Pena Castro>Cool, now thanks.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11466-0
00:57:04.214 --> 00:57:04.754
<v Glasgow, Margaret E>It was really cool.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11480-0
00:57:05.434 --> 00:57:07.584
<v Andres Pena Castro>I was a little bit nervous at
the beginning, but the.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11487-0
00:57:08.424 --> 00:57:10.964
<v Glasgow, Margaret E>Oh, I thought it was really good
and I thought, yeah, yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11496-0
00:57:10.974 --> 00:57:11.954
<v Glasgow, Margaret E>Like it was just.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11532-0
00:57:12.004 --> 00:57:15.954
<v Glasgow, Margaret E>It's so easy to pay attention to
when you have, like, so many</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11532-1
00:57:15.954 --> 00:57:20.158
<v Glasgow, Margaret E>results for different places, so
really needs to be done and I'll</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11522-0
00:57:16.414 --> 00:57:17.844
<v Andres Pena Castro>Yeah, got it.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11530-0
00:57:17.994 --> 00:57:19.554
<v Andres Pena Castro>OK, cool.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11532-2
00:57:20.158 --> 00:57:21.304
<v Glasgow, Margaret E>see you back here.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11557-0
00:57:21.314 --> 00:57:24.421
<v Glasgow, Margaret E>I mean, we're just going to have
a casual 30 minute chat if that</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11557-1
00:57:24.421 --> 00:57:24.994
<v Glasgow, Margaret E>sounds good.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11559-0
00:57:25.314 --> 00:57:26.804
<v Andres Pena Castro>Yeah, it sounds cool.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11563-0
00:57:26.854 --> 00:57:27.124
<v Andres Pena Castro>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11569-0
00:57:27.124 --> 00:57:27.284
<v Glasgow, Margaret E>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11572-0
00:57:27.134 --> 00:57:29.384
<v Andres Pena Castro>One or two maybe talk with Clara
about that.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11577-0
00:57:29.394 --> 00:57:30.044
<v Andres Pena Castro>Maybe I should.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11593-0
00:57:30.054 --> 00:57:32.494
<v Andres Pena Castro>I never I didn't thought of
talking with her about that.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11598-0
00:57:33.344 --> 00:57:35.194
<v Glasgow, Margaret E>Umm we I mean I can.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11600-0
00:57:35.444 --> 00:57:36.034
<v Glasgow, Margaret E>I can.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11604-0
00:57:36.524 --> 00:57:37.574
<v Glasgow, Margaret E>I'll send you.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11626-0
00:57:37.744 --> 00:57:40.544
<v Glasgow, Margaret E>I'll send her your schedule and
see if she can Sign up today.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11624-0
00:57:39.754 --> 00:57:41.824
<v Andres Pena Castro>Yeah, yeah, sure.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11630-0
00:57:41.834 --> 00:57:42.434
<v Andres Pena Castro>That will be great.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11634-0
00:57:42.904 --> 00:57:44.054
<v Glasgow, Margaret E>OK, cool.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11642-0
00:57:43.944 --> 00:57:45.214
<v Andres Pena Castro>Yeah, I think I thought.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11687-0
00:57:44.344 --> 00:57:46.918
<v Glasgow, Margaret E>And I'll say that you
specifically were wondering if</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11687-1
00:57:46.918 --> 00:57:49.637
<v Glasgow, Margaret E>she wanted to talk, and
sometimes when that's the case,</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11687-2
00:57:49.637 --> 00:57:52.842
<v Glasgow, Margaret E>you know, like she might already
have her schedule booked for the</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11687-3
00:57:52.842 --> 00:57:55.804
<v Glasgow, Margaret E>day, she might reach out to you
independently at some point.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11683-0
00:57:54.984 --> 00:57:55.244
<v Andres Pena Castro>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11710-0
00:57:55.864 --> 00:58:00.004
<v Glasgow, Margaret E>But I'll send you the schedule
and I'll see you in a bit.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11685-0
00:57:56.324 --> 00:57:56.734
<v Andres Pena Castro>OK.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11698-0
00:57:56.784 --> 00:57:57.384
<v Andres Pena Castro>Yeah, sounds good.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11725-0
00:58:00.864 --> 00:58:03.214
<v Andres Pena Castro>Like, wait like an hour or two
an hour, right?</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11736-0
00:58:03.764 --> 00:58:06.344
<v Glasgow, Margaret E>I think is an hour and a half.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11750-0
00:58:05.894 --> 00:58:09.454
<v Andres Pena Castro>Half or let's see what time is
your time.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11756-0
00:58:08.384 --> 00:58:11.654
<v Glasgow, Margaret E>So I was, uh 1:30.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11771-0
00:58:10.424 --> 00:58:15.204
<v Andres Pena Castro>It's well, so that will do what
works.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11770-0
00:58:12.104 --> 00:58:13.924
<v Glasgow, Margaret E>So Ohh, it's two hours.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11777-0
00:58:15.214 --> 00:58:16.314
<v Andres Pena Castro>OK, that's good.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11787-0
00:58:16.184 --> 00:58:17.394
<v Glasgow, Margaret E>Yeah. So.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11792-0
00:58:17.164 --> 00:58:19.204
<v Andres Pena Castro>OK, I might go for a run.
Actually.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11794-0
00:58:20.004 --> 00:58:20.554
<v Glasgow, Margaret E>OK, great.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11801-0
00:58:20.074 --> 00:58:20.364
<v Andres Pena Castro>Yeah.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11803-0
00:58:20.404 --> 00:58:21.694
<v Andres Pena Castro>OK, cool.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11807-0
00:58:20.564 --> 00:58:21.424
<v Glasgow, Margaret E>See you in a couple hours.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11810-0
00:58:21.814 --> 00:58:22.714
<v Andres Pena Castro>See you. Bye.</v>

657bbe8b-2686-4465-ac8b-0602478b5742/11812-0
00:58:22.974 --> 00:58:23.414
<v Glasgow, Margaret E>OK, bye.</v>