Station OPCP

Last observation

Dec 21, 2024(2 days ago)

Closest stations

5 closest stations in all 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	3.82	0.15	2024-12-21	-57.53	3.88	1999.958248	1999	351
East	-3.44	0.17	2024-12-21	-59.67	3.97	1999.958248	1999	351
Up	-0.57	0.30	2024-12-21	-31.36	9.32	1999.958248	1999	351

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)
2010-04-04	2010.25462	-6.03	0.48	1.04	0.46	2.33	1.43	earthquake	7.2	ci14607652	242.2
2014-02-20	2014.13689	-2.63	0.48	3.13	0.45	17.77	1.42	other
2019-07-04	2019.50376	3.25	1.28	1.16	1.2	7.39	4.71	earthquake	6.4	ci38443183	197.2
2019-07-06	2019.50924	-1.5	1.28	0.63	1.2	-10.78	4.71	earthquake	7.1	ci38457511	208.2
2022-03-20	2022.21355	-0.63	0.48	7.64	0.46	6.79	1.42	antenna

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)
1999-10-15	1999.7885	3.65	1.11	0.0001	18.4	1.15	0.0001	6.28	2.52	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	1999.958248	1999	351	0.32	0.07	1.04	0.07	0.01	0.05	-0.02	0.05	0.10	0.02	0.05	0.02	0.00	0.02	0.00	0.02
East	1999.958248	1999	351	0.64	0.07	0.68	0.07	0.22	0.04	0.00	0.04	0.03	0.02	0.14	0.02	-0.13	0.02	0.08	0.02
Up	1999.958248	1999	351	-0.77	0.22	0.06	0.22	0.06	0.16	-1.52	0.16	-0.03	0.08	-0.07	0.08	0.07	0.08	0.39	0.08

ITRF2014