Link to USGS home page
         
   | ABOUT US | EQ GLOSSARY | FOR TEACHERS | PRODUCTS & SERVICES | DID YOU FEEL IT? | FAQ | SEARCH   
spacer

Scientific & Technical Reports - The 2002 Denali Fault earthquake

14-Nov-2002 update

PLEASE NOTE:   IF YOU ARE PLANNING ANY FIELD DEPLOYMENTS TO STUDY THE EARTHQUAKE, WE REQUEST THAT YOU PLEASE CONTACT DONNA EBERHART-PHILLIPS, USGS Anchorage, and make her aware of your plans.  She is in contact frequent contact with DGGS and UAF, hence knows of their plans as well.    Contact information for Donna:

Donna Eberhart-Phillips, USGS Anchorage (907) 786-7019;  (907) 786-7425 fax deberhart@usgs.gov 

More detailed information follows under the following headings.

1)    Geologic plans

2)    Preliminary geologic observations

3)    Geotechnical observations

4)    Seismological observations/instrument deployments

5)    Stress transfer modeling

6)    Geodetic observations

7) Remote Sensing

8) Gravity and Aeromagnetic

9)    InSAR coverage looks very promising

10)    Far distance effects of the seismic waves


GEOLOGIC PLANS


PRELIMINARY GEOLOGIC OBSERVATIONS


GEOTECHNICAL OBSERVATIONS/PLAN

From Christina Neal on afternoon of 11/14:

1 - weather today allowed Aeromap to fill in the Susitna splay in the far western region at 1:6000. This should mean we have fault trace coverage at this scale from the far west extent of rupture to the east as far as the Slana River.

2 - weather looks poor for the next few days (cloudy and snow) for the entire area, so we may see a pause in acquisition; hopefully we'll have word on the quality of the first sets of images by Friday

3 - remaining priorities include completion of the 1:6000 (highest priority) and beginning 1:25000 runs (second priority).

4 - I have learned from Dave Kieffer, Tony Crone and Steve Personius that many of the key landslide targets are well off the fault trace, so a higher altitude run down the fault rupture zone is not the best guidance for landslide imagery. Can someone generate a better flight line planning map for this acquisition? Control points for the major landslides? Sooner the better in case weather breaks.

5 - It would appear that the 50K should be enough to obtain both sets of photos, but that is Aeromaps' best estimate to date, and it is subject to some change. They are aware this is our 'ceiling' and are tracking costs.

6 - BRD Purchasing specialist Paula Winningham is working with Sacremento Admin to amend our purchase request with Aeromap. Thanks to Mike Blanpied for his offer to run interference in Menlo, seems we don't need that (yet!)

7 - POTENTIALLY IMPORTANT Via email, Aeromap relayed the following for our consideration (can someone else take charge of follwoing up on this?): "I also want to let you know that we are collecting Airborne GPS/IMU position and orientation data with this photography on speculation. We can use this to generate other value added products including mapping, DEM data, digital orthophoto(s), and alignment fly-throughs (TN comment: with ~ 1 m accuracy, according to Bob). If any of this is of interest, we would be happy to show you examples of these products and work with you to develop a complete plan."


SEISMOLOGICAL OBSERVATIONS/INSTRUMENTATION DEPLOYMENT


STRESS TRANSFER MODELING


GEODETIC OBSERVATIONS


REMOTE SENSING


REGIONAL GRAVITY AND AEROMAGNETIC DATA


INSAR COVERAGE LOOKS VERY PROMISING


FAR DISTANT EFFECTS OF THE SEISIMIC WAVES

 

spacer

U.S. Geological Survey, a bureau of the U.S. Department of the Interior
This page is brought to you by the Earthquake Hazards Program
URL: http://earthquake.usgs.gov/
Maintained by: Web Team
Last modification: Thursday, 14-Nov-2002 14:10
Contact Us: Web_Team
Website Awards and Recognition

USGS Privacy Statement | | Disclaimer | | FOIA | | Accessibility



First Government graphic