Station ALPP

Last observation

Dec 22, 2024(3 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	17.35	0.10	2024-12-22	-200.94	0.53	2001.599589	2001	220
East	-15.83	0.16	2024-12-22	177.95	0.78	2001.599589	2001	220
Up	1.66	0.28	2024-12-22	-16.04	1.40	2001.599589	2001	220

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	0.46	0.44	-0.37	0.69	-2.03	1.21	earthquake	6.6	nc21323712	239.6
2004-07-31	2004.58042	0.46	0.44	-0.37	0.69	-2.03	1.21	antenna
2010-04-04	2010.25462	-0.95	0.58	-0.78	0.85	-2.46	1.53	earthquake	7.2	ci14607652	422.9
2013-01-17	2013.04381	1.65	0.58	0.44	0.85	-0.66	1.53	antenna
2019-07-04	2019.50376	1.13	4.8	-11.43	7.47	512.6	13.01	earthquake	6.4	ci38443183	145.8
2019-07-06	2019.50924	1.13	4.8	-11.43	7.47	512.6	13.01	earthquake	7.1	ci38457511	144
2021-10-08	2021.7666	1.13	4.8	-11.43	7.47	512.6	13.01	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	1.38	2.88	1.00	0.50000	2.00000	1	0.000	2.00	0.00
East	1.21	4.71	1.00	0.50000	2.00000	1	0.000	2.00	0.00
Up	3.14	7.79	1.00	0.50000	2.00000	1	0.000	2.00	0.06

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)
2019-07-05	2019.50924	2.04	3.21	0.0001	7.2	5	0.0001	-332.08	8.71	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	2001.599589	2001	220	-1.48	0.10	-0.86	0.10	-0.36	0.08	-0.11	0.08	-0.15	0.04	0.06	0.04	-0.03	0.04	0.04	0.04
East	2001.599589	2001	220	-0.34	0.15	0.35	0.16	0.00	0.11	-0.23	0.11	-0.15	0.05	-0.16	0.05	-0.10	0.05	0.00	0.05
Up	2001.599589	2001	220	0.18	0.27	-0.39	0.28	-1.49	0.21	-0.31	0.21	-0.10	0.09	-0.08	0.09	0.31	0.09	0.27	0.09

ITRF2014