Station P281

Last observation

Jan 29, 2022

Closest stations

5 closest stations in all networks

NA-fixed

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	25.77	0.36	2022-01-28	-427.00	24.31	2004.862423	2004	316
East	-19.26	0.47	2022-01-28	206.09	30.51	2004.862423	2004	316
Up	0.86	0.70	2022-01-28	2.39	52.77	2004.862423	2004	316

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	0.15	0.54	-0.16	0.62	-0.32	1.51	earthquake	7.2	ci14607652	613.4
2019-07-06	2019.50924	-0.24	0.54	-3.45	0.63	-2.72	1.53	earthquake	7.1	ci38457511	251.8

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	0.45	2.34	1.00	0.50000	2.00000	1	0.000	2.00	0.57
East	0.54	2.51	1.00	0.50000	2.00000	1	0.000	2.00	0.82
Up	1.58	7.91	1.00	0.50000	2.00000	1	0.000	2.00	0.49

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)
2003-12-22	2003.97467	14.38	8.54	0.0001	23.22	10.58	0.0001	1.94	19.62	0.0001
2004-09-28	2004.74196	26.29	3.33	0.0001	-31.96	4	0.0001	-3.99	8.41	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	2004.862423	2004	316	-0.25	0.10	0.94	0.10	-0.22	0.07	0.25	0.07					0.01	0.02	0.03	0.02
East	2004.862423	2004	316	0.79	0.12	0.22	0.12	-0.01	0.08	0.15	0.08					0.14	0.02	0.02	0.02
Up	2004.862423	2004	316	0.43	0.29	-2.00	0.29	0.75	0.21	-0.16	0.21					-0.20	0.07	-0.45	0.07

ITRF2008

Plots

These plots depict the X, Y and Z 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	14.06	0.40	2022-01-29	-337.91	27.64	2004.862423	2004	316
East	-31.67	0.52	2022-01-29	303.40	34.38	2004.862423	2004	316
Up	1.12	0.67	2022-01-29	38.16	52.47	2004.862423	2004	316

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	0.14	0.66	-1.07	0.74	-0.32	1.6	earthquake	7.2	ci14607652	613.4
2019-07-06	2019.50924	0.52	0.67	-4.74	0.74	-2.6	1.61	earthquake	7.1	ci38457511	251.8

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	0.46	3.19	1.00	0.50000	2.00000	1	0.000	2.00	0.53
East	0.55	3.20	1.00	0.50000	2.00000	1	0.000	2.00	0.84
Up	1.52	9.08	1.00	0.50000	2.00000	1	0.000	2.00	0.16

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)
2003-12-22	2003.97467	18.27	9.86	0.0001	27.75	12.02	0.0001	-11.41	19.83	0.0001
2004-09-28	2004.74196	25.31	3.95	0.0001	-33.94	4.63	0.0001	1.76	8.7	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	2004.862423	2004	316	-0.23	0.13	1.32	0.13	-0.04	0.09	0.24	0.09					-0.05	0.03	0.03	0.03
East	2004.862423	2004	316	0.86	0.14	0.19	0.15	-0.04	0.10	0.22	0.10					0.12	0.03	0.04	0.03
Up	2004.862423	2004	316	0.89	0.32	-2.57	0.32	0.80	0.23	-0.09	0.23					-0.25	0.08	-0.46	0.08

Filtered

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	25.53	0.31	2022-01-29	-443.59	18.05	2004.862423	2004	316
East	-18.80	0.39	2022-01-29	248.67	22.10	2004.862423	2004	316
Up	0.83	0.21	2022-01-29	5.71	17.73	2004.862423	2004	316

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	-0.29	0.27	-0.26	0.3	-0.23	0.6	earthquake	7.2	ci14607652	613.4
2019-07-06	2019.50924	-0.28	0.27	-1.43	0.3	-1.85	0.61	earthquake	7.1	ci38457511	251.8

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	0.31	1.00	0.50000	2.00000	1	0.000	2.00	0.73
East	0.58	0.32	1.00	0.50000	2.00000	1	0.000	2.00	0.92
Up	2.21	2.61	1.00	0.50000	2.00000	1	0.000	2.00	0.00

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)
2003-12-22	2003.97467	19.45	5.95	0.0001	6.71	7.22	0.0001	2.65	7.11	0.0001
2004-09-28	2004.74196	25.02	1.99	0.0001	-24.86	2.36	0.0001	-5.3	3.38	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	2004.862423	2004	316	0.08	0.05	0.23	0.05	-0.04	0.03	0.05	0.03					0.02	0.01	0.00	0.01
East	2004.862423	2004	316	0.67	0.06	-0.41	0.06	-0.02	0.03	-0.06	0.03					0.02	0.01	0.01	0.01
Up	2004.862423	2004	316	-0.17	0.12	-1.44	0.12	0.19	0.09	0.06	0.09					-0.01	0.05	-0.03	0.05

These results are preliminary. The station positions are unchecked and should not be used for any engineering applications. There may be errors in the antenna heights. The velocities are very dependent on the length of the span of observations. The presence of outliers (errant observations) sometimes contaminates the velocities.

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