Station AC42

Last observation

Nov 16, 2024(3 days ago)

Closest stations

5 closest stations in all networks

This station is not in any other networks.

NA2014

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	-1.86	0.19	2024-11-16	18.10	0.47	2007.678987	2007	249
East	-2.47	0.21	2024-11-16	18.60	0.45	2007.678987	2007	249
Up	1.95	0.39	2024-11-16	-17.45	1.40	2007.678987	2007	249

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)
2009-08-13	2009.61328	-1.13	0.97	-0.26	0.99	1.36	2.31	antenna
2014-06-23	2014.47365	-0.22	0.49	1.09	0.47	-0.04	1.49	earthquake	7.9	usc000rki5	1102.1
2018-01-23	2018.06023	1	0.49	-0.14	0.46	0.72	1.48	earthquake	7.9	us2000cmy3	880.7
2020-07-22	2020.55578	-0.23	1.65	6.01	1.53	6.14	5.84	earthquake	7.8	at00qdux98	281.3
2020-10-19	2020.79945	0.82	1.52	-4.17	1.42	-0.32	5.14	earthquake	7.6	us6000c9hg	203
2021-07-29	2021.57221	2.28	1.43	5.06	1.35	-4.19	4.61	earthquake	8.2	ak0219neiszm	330.9
2023-07-16	2023.53662	-3.06	0.5	4.38	0.47	-2.01	1.52	earthquake	7.2	us7000kg30	131.2

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	-1.56	0.61	0.0001	1.79	0.57	0.0001	-3.32	2.08	0.0001
2020-10-19	2020.79945	1.46	0.56	0.0001	0.15	0.53	0.0001	0.83	1.85	0.0001
2021-07-28	2021.57221	-1.94	0.5	0.0001	-0.56	0.48	0.0001	0.99	1.5	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	2007.678987	2007	249	-1.14	0.09	0.00	0.09	-0.42	0.06	0.00	0.06	0.11	0.03	0.13	0.03	0.07	0.03	0.11	0.03
East	2007.678987	2007	249	-0.27	0.09	-0.71	0.09	-0.20	0.06	0.34	0.06	-0.15	0.03	0.01	0.03	0.03	0.02	-0.09	0.02
Up	2007.678987	2007	249	-0.52	0.29	-0.30	0.29	0.25	0.21	0.54	0.21	-0.04	0.10	0.05	0.10	-0.34	0.10	-0.19	0.10

ITRF2014