Station TWRI

Last observation

Dec 24, 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	4.40	0.15	2024-12-24	-43.15	0.47	2004.76386	2004	280
East	6.79	0.17	2024-12-24	119.49	0.45	2004.76386	2004	280
Up	-2.12	0.30	2024-12-24	-35.09	1.40	2004.76386	2004	280

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)
2005-06-15	2005.45175	-1	0.49	0.63	0.46	-5.46	1.45	earthquake	7.2	usp000dt25	622.5
2008-09-30	2008.74743	1.33	0.7	-8.29	0.67	2.99	1.8	antenna
2011-09-07	2011.68172	-9.05	0.49	-1.44	0.47	40.59	1.53	antenna
2012-08-02	2012.5859	24.13	0.82	-303.82	0.82	57.33	2.12	antenna
2018-07-18	2018.54209	-2.28	0.63	-3	0.61	1.16	1.76	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

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	2004.76386	2004	280	2.40	0.10	-0.85	0.09	0.24	0.07	0.76	0.07	0.02	0.03	0.03	0.03	0.05	0.03	0.04	0.03
East	2004.76386	2004	280	-0.38	0.09	0.51	0.09	-0.42	0.06	0.27	0.06	-0.17	0.03	0.02	0.03	-0.14	0.03	0.01	0.03
Up	2004.76386	2004	280	3.39	0.30	6.40	0.29	-0.41	0.23	-1.56	0.23	0.19	0.11	-0.27	0.11	-0.32	0.11	0.49	0.11

ITRF2014