Station HOPB

Last observation

Jan 23, 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	21.98	0.24	2022-01-22	-297.09	0.73	1995.648871	1995	238
East	-17.82	0.11	2022-01-22	246.41	0.58	1995.648871	1995	238
Up	0.63	0.32	2022-01-22	-35.83	1.74	1995.648871	1995	238

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)
1997-09-10	1997.68994	-2.06	0.81	-0.33	0.65	36.6	1.95	antenna
1999-08-05	1999.59138	-2.36	0.76	0.96	0.63	-6.83	1.91	antenna
2005-06-15	2005.45175	-0.18	0.76	0.45	0.64	0.18	1.92	earthquake	7.2	usp000dt25	353.8
2007-05-10	2007.35318	-1.84	1.16	0.15	0.79	-28.46	2.34	other
2010-01-10	2010.02464	-1.22	0.77	-0.15	0.64	0.32	1.96	earthquake	6.5	nc71338066	230.3
2011-08-25	2011.64613	-0.58	1.1	-0.96	0.78	27.13	2.3	other
2013-07-31	2013.57769	-1.08	1.08	-0.61	0.82	4.15	2.39	antenna
2014-03-10	2014.18617	0.8	0.76	0.42	0.72	-2.1	2.13	earthquake	6.8	nc72182046	269.2
2014-08-24	2014.64339	0.49	0.76	-0.83	0.68	-1.83	2.05	earthquake	6	nc72282711	109.2
2016-12-08	2016.93634	0.46	0.76	-1.36	0.63	-5.57	1.89	earthquake	6.6	us20007z6r	312.6

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	0.62	2.99	1.00	0.50000	2.00000	2	0.181	2.00	0.92
East	0.53	3.71	1.00	0.50000	2.00000	2	0.321	2.00	0.00
Up	2.41	10.87	1.00	0.50000	2.00000	2	0.369	2.00	0.01

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	1995.648871	1995	238	-0.65	0.14	-0.39	0.14	0.04	0.10	-0.05	0.10					0.06	0.02	-0.04	0.02
East	1995.648871	1995	238	-1.11	0.15	0.08	0.15	-0.16	0.12	-0.18	0.12					0.10	0.03	-0.04	0.03
Up	1995.648871	1995	238	2.37	0.36	1.84	0.37	-0.50	0.27	0.95	0.27					-0.34	0.09	-0.16	0.09

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	9.78	0.20	2022-01-23	-129.24	0.74	1995.648871	1995	238
East	-30.67	0.12	2022-01-23	422.83	0.66	1995.648871	1995	238
Up	0.45	0.35	2022-01-23	-29.90	1.87	1995.648871	1995	238

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)
1997-09-10	1997.68994	-2.09	0.82	-0.46	0.74	34.88	2.09	antenna
1999-08-05	1999.59138	-2.24	0.77	0.8	0.72	-7.41	2.04	antenna
2005-06-15	2005.45175	-0.61	0.78	0.74	0.73	-0.75	2.06	earthquake	7.2	usp000dt25	353.8
2007-05-10	2007.35318	-1.24	1.12	0.67	0.91	-28.78	2.54	other
2010-01-10	2010.02464	-1.4	0.79	-0.53	0.73	-0.39	2.09	earthquake	6.5	nc71338066	230.3
2011-08-25	2011.64613	-0.77	1.07	-0.19	0.89	27.91	2.49	other
2013-07-31	2013.57769	-0.77	1.06	-0.05	0.94	3.12	2.55	antenna
2014-03-10	2014.18617	0.45	0.79	0.7	0.82	-2.67	2.22	earthquake	6.8	nc72182046	269.2
2014-08-24	2014.64339	0.6	0.78	-0.75	0.78	-0.75	2.16	earthquake	6	nc72282711	109.2
2016-12-08	2016.93634	0.22	0.77	-0.99	0.71	-4.69	2.02	earthquake	6.6	us20007z6r	312.6

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	0.60	3.46	1.00	0.50000	2.00000	2	0.185	2.00	0.67
East	0.54	4.28	1.00	0.50000	2.00000	2	0.359	2.00	0.00
Up	2.25	12.22	1.00	0.50000	2.00000	1	0.000	2.00	0.01

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	1995.648871	1995	238	-1.02	0.14	-0.28	0.14	-0.07	0.11	0.00	0.11					0.06	0.03	0.01	0.03
East	1995.648871	1995	238	-1.09	0.17	0.16	0.17	-0.17	0.13	-0.29	0.13					0.14	0.03	-0.03	0.03
Up	1995.648871	1995	238	2.85	0.34	2.03	0.34	-0.57	0.25	0.95	0.25					-0.31	0.09	-0.16	0.09

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	21.93	0.37	2022-01-23	-269.86	0.79	1998.758385	1998	278
East	-17.78	0.22	2022-01-23	221.99	0.62	1998.758385	1998	278
Up	0.17	0.38	2022-01-23	14.60	1.72	1998.758385	1998	278

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)
1999-08-05	1999.59138	-2.66	0.65	0.62	0.53	-16.91	1.56	antenna
2005-06-15	2005.45175	-0.61	0.63	-0.66	0.52	0.82	1.51	earthquake	7.2	usp000dt25	353.8
2007-05-10	2007.35318	-1.63	1.11	0.16	0.81	-28.03	1.9	other
2010-01-10	2010.02464	-0.25	0.64	-0.12	0.53	2.08	1.56	earthquake	6.5	nc71338066	230.3
2011-08-25	2011.64613	-0.78	1.02	-1.14	0.76	25.05	1.85	other
2013-07-31	2013.57769	-1.56	0.98	-0.98	0.73	2.34	1.85	antenna
2014-03-10	2014.18617	-0.06	0.63	0.31	0.52	-0.86	1.59	earthquake	6.8	nc72182046	269.2
2014-08-24	2014.64339	0.98	0.63	-0.67	0.52	0.34	1.56	earthquake	6	nc72282711	109.2
2016-12-08	2016.93634	0.06	0.63	-0.04	0.52	-0.59	1.5	earthquake	6.6	us20007z6r	312.6

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	0.69	1.56	1.00	0.50000	2.00000	1	0.000	2.00	1.62
East	0.54	1.76	1.00	0.50000	2.00000	1	0.000	2.00	0.86
Up	3.21	4.89	1.00	0.50000	2.00000	2	0.650	2.00	1.15

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	1998.758385	1998	278	0.15	0.12	-0.45	0.12	-0.07	0.07	-0.05	0.07					-0.04	0.02	0.00	0.02
East	1998.758385	1998	278	0.10	0.09	-0.36	0.09	-0.07	0.06	-0.01	0.06					-0.04	0.02	-0.02	0.02
Up	1998.758385	1998	278	1.36	0.32	0.42	0.32	-0.02	0.25	-0.03	0.25					0.04	0.08	0.10	0.08

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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