Station NAIU

Last observation

Apr 17, 2022

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	-0.04	0.05	2022-04-17	1.28	0.42	1997.785763	1997	288
East	-1.31	0.15	2022-04-17	12.74	0.58	1997.785763	1997	288
Up	0.79	0.28	2022-04-17	-13.22	1.88	1997.785763	1997	288

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)
2003-11-12	2003.86242	-1.66	0.47	-2.08	0.79	2.88	2	antenna
2020-03-18	2020.21081	-0.72	1.41	0.95	1.6	-1.73	5.58	earthquake	5.7	uu60363602	32.1

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	0.57	2.70	1.00	0.50000	2.00000	2	0.160	2.00	0.01
East	0.68	2.31	1.00	0.50000	2.00000	2	0.173	2.00	0.58
Up	1.68	11.30	1.00	0.50000	2.00000	1	0.000	2.00	0.60

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)
2020-03-18	2020.21081	-0.09	0.42	0.0001	-0.62	0.55	0.0001	1.35	1.8	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	1997.785763	1997	288	-1.07	0.10	0.81	0.10	0.11	0.08	0.13	0.08	-0.01	0.02	-0.11	0.02	0.05	0.02	-0.08	0.02
East	1997.785763	1997	288	-0.15	0.11	1.14	0.11	-0.10	0.08	0.32	0.08	0.09	0.02	-0.08	0.02	-0.10	0.02	-0.08	0.02
Up	1997.785763	1997	288	2.90	0.33	0.41	0.33	0.42	0.24	-0.28	0.24	-0.16	0.08	-0.04	0.08	-0.49	0.08	0.45	0.08

ITRF2014