Station AC44

Last observation

Dec 18, 2024(2 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	8.06	0.18	2024-12-18	-50.65	0.47	2008.596851	2008	219
East	-8.07	0.20	2024-12-18	61.26	0.45	2008.596851	2008	219
Up	5.30	0.36	2024-12-18	-44.22	1.37	2008.596851	2008	219

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)
2015-11-12	2015.86242	-0.38	0.5	1.24	0.47	-1.58	1.61	antenna
2016-01-24	2016.06297	1.79	0.5	1.27	0.47	-0.54	1.61	earthquake	7.1	us10004gqp	276.8
2018-01-23	2018.06023	-2.7	0.49	-1.04	0.46	-3.99	1.47	earthquake	7.9	us2000cmy3	583.8
2018-11-30	2018.9117	-7.75	1.42	-7.27	1.34	3.17	4.55	earthquake	7	ak20419010	21.1
2020-07-22	2020.55578	0.58	0.5	0.16	0.47	1.07	1.6	earthquake	7.8	at00qdux98	867.8
2020-10-19	2020.79945	1.26	0.5	-1.66	0.47	-0.99	1.6	earthquake	7.6	us6000c9hg	947.4
2021-07-29	2021.57221	1.57	0.49	-0.72	0.47	-2.74	1.49	earthquake	8.2	ak0219neiszm	816.7

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)
2018-11-29	2018.9117	4.17	0.49	0.0001	2.06	0.47	0.0001	-2.43	1.42	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	2008.596851	2008	219	-0.59	0.09	-0.04	0.09	-0.12	0.06	-0.27	0.06	-0.18	0.03	0.13	0.03	-0.02	0.03	-0.10	0.03
East	2008.596851	2008	219	-0.08	0.08	-1.27	0.08	-0.38	0.06	-0.47	0.06	-0.09	0.02	0.01	0.02	0.00	0.02	0.03	0.02
Up	2008.596851	2008	219	1.53	0.27	5.06	0.28	0.32	0.20	0.30	0.21	-0.37	0.10	0.11	0.10	-0.02	0.10	0.18	0.10

ITRF2014