Station WATC

Last observation

Nov 3, 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	7.41	0.14	2024-11-03	-88.70	0.47	2001.720055	2001	264
East	-4.48	0.15	2024-11-03	55.66	0.45	2001.720055	2001	264
Up	1.35	0.24	2024-11-03	-16.32	1.35	2001.720055	2001	264

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)
2003-12-23	2003.97467	-0.16	0.48	-2.03	0.49	-1.5	1.42	earthquake	6.6	nc21323712	308.7
2016-12-28	2016.9911	0.16	0.48	-0.52	0.46	-4.59	1.43	earthquake	5.6	nn00570709	81.9
2019-07-04	2019.50376	1.24	1.28	-0.93	1.2	-2.24	4.71	earthquake	6.4	ci38443183	240.5
2019-07-06	2019.50924	-4.33	1.28	0.22	1.2	0.86	4.71	earthquake	7.1	ci38457511	230.6
2020-05-15	2020.36961	5.98	1.4	7.66	1.33	6.27	4.55	earthquake	6.5	nn00725272	87.8
2021-07-08	2021.51472	-0.36	0.49	-0.58	0.46	-1.61	1.52	earthquake	6	nc73584926	120.7

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)
2020-05-15	2020.36961	-0.99	0.48	0.0001	-1.73	0.46	0.0001	-1.44	1.4	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	2001.720055	2001	264	-0.35	0.07	0.48	0.07	-0.04	0.05	0.07	0.05	-0.06	0.02	0.04	0.02	0.00	0.02	0.03	0.02
East	2001.720055	2001	264	0.39	0.07	0.82	0.07	-0.19	0.05	0.15	0.05	-0.17	0.02	-0.07	0.02	0.05	0.02	0.06	0.02
Up	2001.720055	2001	264	1.09	0.23	0.99	0.23	0.06	0.17	0.72	0.17	-0.07	0.08	0.01	0.08	0.26	0.08	-0.17	0.08

ITRF2014