Station AC24

Last observation

Dec 15, 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	-2.09	0.17	2024-12-15	24.11	0.47	2006.492813	2006	181
East	-0.17	0.19	2024-12-15	2.84	0.45	2006.492813	2006	181
Up	1.43	0.32	2024-12-15	-14.85	1.37	2006.492813	2006	181

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)
2015-05-29	2015.4052	-0.01	0.49	0.12	0.46	0.49	1.49	earthquake	6.7	ak11610140	232.9
2016-01-24	2016.06297	1.39	0.49	1.4	0.46	0.34	1.48	earthquake	7.1	us10004gqp	214
2018-01-23	2018.06023	6.3	0.49	-9.44	0.46	-1.73	1.46	earthquake	7.9	us2000cmy3	539.9
2018-11-30	2018.9117	0.41	0.49	-1.08	0.46	2.42	1.46	earthquake	7	ak20419010	476.6
2020-07-22	2020.55578	-5.33	0.5	-0.19	0.47	3.38	1.62	earthquake	7.8	at00qdux98	422.2
2020-10-19	2020.79945	-2.18	0.9	-2.23	0.88	-1.78	2.48	earthquake	7.6	us6000c9hg	489.3
2021-07-29	2021.57221	-10.09	1.57	2.91	1.5	5.76	4.93	earthquake	8.2	ak0219neiszm	380.6
2021-08-20	2021.63244	2.72	0.72	-2.01	0.66	3.66	2.63	antenna
2023-07-16	2023.53662	-2.47	0.52	-0.49	0.5	0.59	1.56	earthquake	7.2	us7000kg30	533.2

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)
2021-07-28	2021.57221	-7.47	0.62	0.0001	-0.19	0.6	0.0001	-1.04	1.86	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	2006.492813	2006	181	-0.25	0.08	-1.01	0.09	0.16	0.06	-0.10	0.06	-0.15	0.02	0.08	0.02	0.13	0.02	0.02	0.02
East	2006.492813	2006	181	0.40	0.08	-0.44	0.08	0.05	0.05	-0.44	0.05	0.02	0.02	-0.10	0.02	-0.07	0.02	0.03	0.02
Up	2006.492813	2006	181	-1.05	0.26	0.61	0.27	0.05	0.19	-0.17	0.19	0.04	0.09	-0.02	0.09	0.06	0.09	0.00	0.09

ITRF2014