Station SGHS

Last observation

Sep 16, 2008

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	23.93	0.14	2008-09-16	-115.93	1.56	1999.791239	1999	290
East	-24.54	0.79	2008-09-16	107.07	2.48	1999.791239	1999	290
Up	-1.23	0.50	2008-09-16	6.30	5.86	1999.791239	1999	290

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	0.50	2.58	1.00	0.50000	2.00000	1	0.000	2.00	0.00
East	0.76	2.02	1.00	0.50000	2.00000	1	0.000	2.00	2.04
Up	2.65	7.16	1.00	0.50000	2.00000	1	0.000	2.00	0.35

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	1.07	0.46	0.0001	1.17	0.99	0.0001	-0.13	1.7	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	1999.791239	1999	290	-0.49	0.12	1.36	0.12	0.47	0.09	0.03	0.09					0.14	0.03	-0.05	0.03
East	1999.791239	1999	290	1.33	0.23	0.82	0.24	-0.10	0.14	-0.21	0.14					0.08	0.04	0.02	0.04
Up	1999.791239	1999	290	-1.14	0.38	0.66	0.38	1.50	0.28	0.65	0.28					-0.09	0.12	-0.12	0.12

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	13.33	0.18	2008-09-16	-66.87	1.72	1999.791239	1999	290
East	-36.88	0.68	2008-09-16	161.97	2.54	1999.791239	1999	290
Up	-1.63	0.53	2008-09-16	4.44	6.10	1999.791239	1999	290

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	0.51	2.77	1.00	0.50000	2.00000	1	0.000	2.00	0.12
East	0.67	2.81	1.00	0.50000	2.00000	1	0.000	2.00	1.63
Up	2.45	8.42	1.00	0.50000	2.00000	1	0.000	2.00	0.22

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	1.11	0.53	0.0001	1.67	0.98	0.0001	0.72	1.78	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	1999.791239	1999	290	-0.73	0.14	1.87	0.14	0.45	0.10	0.12	0.10					0.11	0.04	0.13	0.04
East	1999.791239	1999	290	1.63	0.24	0.74	0.24	-0.13	0.15	-0.19	0.15					0.16	0.04	0.11	0.04
Up	1999.791239	1999	290	-1.05	0.43	0.46	0.43	1.64	0.32	0.57	0.31					0.00	0.13	-0.04	0.13

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	23.82	0.17	2008-09-16	-109.61	1.47	1999.824093	1999	302
East	-24.47	0.68	2008-09-16	109.89	3.24	1999.824093	1999	302
Up	-1.25	0.68	2008-09-16	10.76	7.11	1999.824093	1999	302

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	0.59	0.25	1.00	0.50000	2.00000	1	0.000	2.00	0.41
East	0.67	0.00	1.00	0.50000	2.00000	1	0.000	2.00	1.83
Up	3.01	1.92	1.00	0.50000	2.00000	1	0.000	2.00	1.47

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	-0.08	0.45	0.0001	0.22	1.17	0.0001	-0.88	2.11	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	1999.824093	1999	302	-0.05	0.05	0.33	0.05	0.01	0.03	0.02	0.03					0.01	0.02	0.02	0.02
East	1999.824093	1999	302	0.66	0.14	-0.68	0.14	-0.20	0.07	-0.14	0.07					0.03	0.02	0.02	0.02
Up	1999.824093	1999	302	-0.76	0.22	1.17	0.22	0.57	0.16	0.21	0.16					0.04	0.09	-0.02	0.09

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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