Station AC12

Last observation

Jan 25, 2022

Closest stations

5 closest stations in all networks

NA-fixed

Plots

These plots depict the North, East and Up components of the station as a function of time. More detailed explanation »

Dashed vertical lines show offsets (when present) due to:

Green – antenna changes from site logs
Red – earthquakes
Blue – manually entered

Downloads

Velocities

	Velocity (mm/yr)	Velocity standard deviation (mm/yr)	Last observation	Intercept (mm)	Intercept standard deviation (mm)	Reference date	Reference year	Reference day of year
North	7.04	0.21	2022-01-25	-1.97	0.48	2008.342231	2008	126
East	-6.62	0.23	2022-01-25	41.82	0.46	2008.342231	2008	126
Up	-1.17	0.43	2022-01-25	-18.80	1.43	2008.342231	2008	126

Offsets

	Decimal date	N offset (mm)	N uncertainty (mm)	E offset (mm)	E uncertainty (mm)	U offset (mm)	U uncertainty (mm)	Type	Earthquake magnitude	Earthquake information	Distance from epicenter (km)
2014-06-23	2014.47365	-0.08	0.49	0.58	0.47	-0.7	1.5	earthquake	7.9	usc000rki5	1310.8
2015-05-29	2015.4052	1.43	0.49	0.01	0.47	-0.5	1.49	earthquake	6.7	ak11610140	279.2
2017-07-13	2017.52841	7.58	0.9	-4.67	0.91	-2.75	2.27	antenna
2018-01-23	2018.06023	1.63	0.5	-0.51	0.47	-1.31	1.52	earthquake	7.9	us2000cmy3	671.9
2020-07-22	2020.55578	-191	1.91	36.41	1.54	334.6	5.88	earthquake	7.8	at00qdux98	71.9
2020-10-19	2020.79945	-171.02	1.54	-40.82	1.43	-98.36	5.19	earthquake	7.6	us6000c9hg	25.2
2021-07-29	2021.57221	-6.69	1.55	-20.49	1.44	-13.6	5.35	earthquake	8.2	ak0219neiszm	124.5

Noise

	White noise (mm)	Amplitude of first power law (mm/yr^(n₁/4))	n₁ (spectral index of first power law)	Lower frequency limit for band-pass (BP) filtered noise (cycle/year)	Upper frequency limit for band-pass (BP) filtered noise (cycle/year)	Number of poles for BP filtered noise	Amplitude of BP filtered noise (mm)	n₂ (spectral index of second power law)	Amplitude of second power law (mm/yr^(n₂/4))
North	0.85	1.70	1.00	0.50000	2.00000	1	0.000	2.00	0.50
East	0.84	1.40	1.00	0.50000	2.00000	1	0.000	2.00	0.60
Up	3.20	6.40	1.00	0.50000	2.00000	1	0.000	2.00	0.50

Post-seismic

	Decimal date	N log amplitude (mm)	N log amplitude standard deviation (mm)	N time constant (years)	E log amplitude (mm)	E log amplitude standard deviation (mm)	E time constant (years)	U log amplitude (mm)	U log amplitude standard deviation (mm)	U time constant (years)
2020-07-22	2020.55578	-37.09	0.69	0.0001	22.28	0.57	0.0001	2.21	2.09	0.0001
2020-10-19	2020.79945	-7.12	0.58	0.0001	2.16	0.54	0.0001	-0.22	1.87	0.0001
2021-07-28	2021.57221	-7.45	0.55	0.0001	3.65	0.52	0.0001	-1.64	1.82	0.0001

Seasonal

	Reference date	Reference year	Reference day of year	Amplitude of cosine (365.25-day period), mm	Standard deviation of cosine amplitude (365.25-day period)	Amplitude of sine (365.25-day period), mm	Standard deviation of sine amplitude (365.25-day period)	Amplitude of cosine (180.625-day period), mm	Standard deviation of cosine amplitude (180.625-day period)	Amplitude of sine (180.625-day period), mm	Standard deviation of sine amplitude (180.625-day period)	Amplitude of cosine (14.76-day period), mm	Standard deviation of cosine amplitude (14.76-day period)	Amplitude of sine (14.76-day period), mm	Standard deviation of sine amplitude (14.76-day period)	Amplitude of cosine (13.63-day period), mm	Standard deviation of cosine amplitude (13.63-day period)	Amplitude of sine (13.63-day period), mm	Standard deviation of sine amplitude (13.63-day period)
North	2008.342231	2008	126	0.34	0.11	-0.85	0.11	0.14	0.07	0.10	0.07					-0.13	0.03	0.09	0.03
East	2008.342231	2008	126	0.18	0.10	0.26	0.10	0.31	0.07	-0.19	0.07					0.05	0.03	0.02	0.03
Up	2008.342231	2008	126	-0.75	0.34	-0.98	0.33	0.57	0.24	-0.53	0.24					0.00	0.11	-0.27	0.11

ITRF2008