Station PHLB

Last observation

Jul 10, 2019

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	13.77	0.13	2019-07-10	-154.16	0.62	1999.479124	1999	176
East	-8.87	0.11	2019-07-10	107.44	0.72	1999.479124	1999	176
Up	-0.57	0.33	2019-07-10	11.16	2.04	1999.479124	1999	176

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)
1999-10-16	1999.7885	-1.81	4.56	-0.41	4.01	4.28	12.56	earthquake	7.1	ci9108652	135.7
2010-04-04	2010.25462	-1.24	0.47	0.3	0.47	0.11	1.43	earthquake	7.2	ci14607652	367.8
2012-08-30	2012.66256	0.69	0.48	0.92	0.47	1.39	1.43	antenna
2019-07-04	2019.50376	5.21	1.13	1.12	1.42	0.65	3.93	earthquake	6.4	ci38443183	88.2
2019-07-06	2019.50924	15.42	4.25	3.44	5.42	11.79	14.88	earthquake	7.1	ci38457511	93.6

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	0.55	2.25	1.00	0.50000	2.00000	2	0.153	2.00	0.20
East	0.81	2.40	1.00	0.50000	2.00000	2	0.230	2.00	0.01
Up	1.88	8.10	1.00	0.50000	2.00000	1	0.000	2.00	0.02

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	2.82	1.18	0.0001	-3.15	1	0.0001	-2.05	3.14	0.0001
2019-07-05	2019.50924	2.83	2.33	0.0001	-0.74	2.95	0.0001	-3.36	8.16	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	1999.479124	1999	176	-0.48	0.11	-0.51	0.11	-0.01	0.08	-0.07	0.08					-0.03	0.02	0.05	0.02
East	1999.479124	1999	176	-0.90	0.13	-0.25	0.13	0.15	0.10	-0.11	0.10					-0.05	0.03	0.09	0.03
Up	1999.479124	1999	176	0.93	0.27	0.51	0.27	-0.22	0.20	-1.14	0.20					0.43	0.08	-0.02	0.08

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	3.01	0.13	2019-07-10	-45.01	0.74	1999.479124	1999	176
East	-21.18	0.13	2019-07-10	237.27	0.83	1999.479124	1999	176
Up	-0.85	0.34	2019-07-10	14.27	2.12	1999.479124	1999	176

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)
1999-10-16	1999.7885	-9.95	4.82	3.86	4.87	7.77	12.89	earthquake	7.1	ci9108652	135.7
2010-04-04	2010.25462	-1.08	0.54	-0.7	0.57	0.21	1.47	earthquake	7.2	ci14607652	367.8
2012-08-30	2012.66256	0.65	0.54	1.11	0.57	1.4	1.48	antenna
2019-07-04	2019.50376	6.75	1.29	1.91	1.58	-2.26	4.11	earthquake	6.4	ci38443183	88.2
2019-07-06	2019.50924	14.35	4.79	8	5.95	19.98	15.63	earthquake	7.1	ci38457511	93.6

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	0.49	3.13	1.00	0.50000	2.00000	2	0.134	2.00	0.01
East	0.81	3.02	1.00	0.50000	2.00000	2	0.235	2.00	0.01
Up	2.02	8.27	1.00	0.50000	2.00000	1	0.000	2.00	0.02

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	4.84	1.2	0.0001	-4.33	1.21	0.0001	-2.84	3.22	0.0001
2019-07-05	2019.50924	3.12	2.64	0.0001	-3.87	3.26	0.0001	-6.83	8.57	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	1999.479124	1999	176	-0.85	0.12	-0.85	0.12	-0.04	0.09	-0.21	0.09					-0.06	0.03	-0.03	0.03
East	1999.479124	1999	176	-1.00	0.15	-0.08	0.15	0.22	0.11	-0.13	0.11					-0.09	0.03	0.10	0.03
Up	1999.479124	1999	176	1.08	0.28	0.95	0.27	-0.34	0.20	-1.26	0.20					0.41	0.08	-0.07	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	13.78	0.08	2019-07-10	-138.57	1.85	2000.065708	2000	25
East	-9.05	0.08	2019-07-10	89.25	1.88	2000.065708	2000	25
Up	-0.62	0.08	2019-07-10	12.54	3.02	2000.065708	2000	25

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	-0.05	0.15	0.35	0.18	0.04	0.4	earthquake	7.2	ci14607652	367.8
2012-08-30	2012.66256	0.93	0.15	0.41	0.17	-0.84	0.4	antenna
2019-07-04	2019.50376	2.14	0.64	-1.72	0.79	2.94	2.31	earthquake	6.4	ci38443183	88.2
2019-07-06	2019.50924	12.62	2.57	1.22	3.18	2.02	9.32	earthquake	7.1	ci38457511	93.6

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	0.58	0.13	1.00	0.50000	2.00000	1	0.000	2.00	0.27
East	0.71	0.22	1.00	0.50000	2.00000	1	0.000	2.00	0.24
Up	1.90	1.64	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)
1999-10-15	1999.7885	0.68	0.51	0.0001	-0.1	0.52	0.0001	-1.24	0.76	0.0001
2019-07-05	2019.50924	3.67	1.38	0.0001	1.9	1.72	0.0001	1.07	5.04	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	2000.065708	2000	25	0.02	0.02	0.02	0.02	-0.02	0.02	-0.04	0.02					0.00	0.01	-0.01	0.01
East	2000.065708	2000	25	-0.05	0.02	0.08	0.02	-0.05	0.02	0.01	0.02					0.00	0.01	0.01	0.01
Up	2000.065708	2000	25	0.02	0.08	0.32	0.08	-0.16	0.06	-0.10	0.06					-0.08	0.04	0.06	0.04

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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