GPS Station DECH (BasinAndRange Network)

Station Details

Networks

This station belongs to the following network(s):

NA-fixed

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	8.69	0.35	20190215	-77.83	0.69	2001.613279	2001	225
East	-9.22	0.51	20190215	81.83	0.83	2001.613279	2001	225
Up	0.75	0.25	20190215	-5.04	1.82	2001.613279	2001	225

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)
20180527	2018.39973	-0.26	0.66	-0.6	0.8	0.42	1.97	Reference Frame Change: IGb08 to IGS14

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	0.80	2.04	1.00	0.50000	2.00000	1	0.000	2.00	1.35
East	1.00	2.04	1.00	0.50000	2.00000	1	0.000	2.00	2.01
Up	1.88	11.64	1.00	0.50000	2.00000	1	0.000	2.00	0.15

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 (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	2001.613279	2001	225	0.23	0.13	0.11	0.13	0.03	0.08	-0.01	0.08	0.07	0.03	0.03	0.03
East	2001.613279	2001	225	0.01	0.17	0.84	0.17	-0.19	0.10	-0.31	0.10	0.16	0.03	0.00	0.03
Up	2001.613279	2001	225	0.97	0.39	2.37	0.39	-0.93	0.28	0.79	0.29	-0.02	0.10	-0.64	0.10

ITRF2008

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	-2.28	0.32	20190215	19.22	0.79	2001.613279	2001	225
East	-22.15	0.54	20190215	196.40	0.95	2001.613279	2001	225
Up	0.48	0.26	20190215	-2.46	1.93	2001.613279	2001	225

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)
20180527	2018.39973	-4.27	0.77	-1.04	0.92	1.05	2.1	Reference Frame Change: IGb08 to IGS14

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	0.75	3.02	1.00	0.50000	2.00000	1	0.000	2.00	1.15
East	1.02	2.75	1.00	0.50000	2.00000	1	0.000	2.00	2.07
Up	1.77	12.81	1.00	0.50000	2.00000	1	0.000	2.00	0.06

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 (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	2001.613279	2001	225	-0.17	0.15	0.14	0.15	-0.10	0.10	-0.01	0.10	-0.01	0.03	0.04	0.03
East	2001.613279	2001	225	0.09	0.19	1.00	0.19	-0.20	0.12	-0.35	0.12	0.16	0.04	0.03	0.04
Up	2001.613279	2001	225	1.47	0.42	2.60	0.42	-1.07	0.31	0.82	0.31	-0.06	0.11	-0.62	0.11

Filtered

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	8.60	0.30	20190215	-76.91	0.46	2001.613279	2001	225
East	-9.15	0.52	20190215	81.10	0.57	2001.613279	2001	225
Up	0.88	0.57	20190215	-3.48	1.52	2001.613279	2001	225

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)
20180527	2018.39973	-1.01	0.44	0.02	0.54	0.54	1.47	Reference Frame Change: IGb08 to IGS14

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	0.87	0.59	1.00	0.50000	2.00000	1	0.000	2.00	1.22
East	1.01	0.28	1.00	0.50000	2.00000	1	0.000	2.00	2.13
Up	2.77	4.34	1.00	0.50000	2.00000	1	0.000	2.00	2.07

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 (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	2001.613279	2001	225	0.63	0.08	0.15	0.08	0.08	0.05	0.00	0.05	0.02	0.02	0.00	0.02
East	2001.613279	2001	225	0.45	0.12	0.32	0.12	-0.03	0.07	-0.14	0.07	0.05	0.02	-0.03	0.02
Up	2001.613279	2001	225	0.26	0.25	1.86	0.25	-0.36	0.17	0.18	0.17	0.13	0.08	-0.16	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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