Station ASHL

Last observation

Dec 18, 2024(5 days ago)

Closest stations

5 closest stations in all networks

This station is not in any other networks.

NA2014

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	7.14	0.18	2024-12-18	-51.36	0.47	2007.251882	2007	93
East	-1.77	0.19	2024-12-18	12.45	0.45	2007.251882	2007	93
Up	-0.11	0.34	2024-12-18	-2.59	1.36	2007.251882	2007	93

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)
2010-01-10	2010.02464	-2.76	0.49	-0.38	0.46	-0.76	1.45	earthquake	6.5	nc71338066	239.6
2013-07-28	2013.56947	-0.91	0.49	-1.89	0.46	1.86	1.49	other
2014-03-10	2014.18617	-0.53	0.49	0.76	0.47	1.2	1.53	earthquake	6.8	nc72182046	254.6
2014-09-29	2014.74196	-0.06	0.48	0.06	0.46	-2.81	1.51	other
2015-05-14	2015.36413	3.44	0.49	-0.47	0.46	8.12	1.5	antenna
2022-12-20	2022.96646	0.82	1.43	1.03	1.48	-18.87	3.36	earthquake	6.4	nc73821036	235.2
2024-12-05	2024.92813	1.55	0.69	-0.06	0.64	0.69	2.45	earthquake	7	nc75095651	281.2

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	0.85	1.70	1.00	0.50000	2.00000	1	0.000	2.00	0.50
East	0.84	1.40	1.00	0.50000	2.00000	1	0.000	2.00	0.60
Up	3.20	6.40	1.00	0.50000	2.00000	1	0.000	2.00	0.50

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	2007.251882	2007	93	0.53	0.09	0.38	0.09	-0.31	0.06	-0.05	0.06	-0.06	0.03	-0.07	0.03	0.00	0.03	0.01	0.03
East	2007.251882	2007	93	2.19	0.09	-2.84	0.09	-0.89	0.06	0.08	0.06	-0.03	0.03	-0.20	0.03	0.09	0.03	-0.05	0.03
Up	2007.251882	2007	93	-3.32	0.28	-0.73	0.29	0.51	0.21	0.06	0.21	0.01	0.10	-0.08	0.10	-0.37	0.10	-0.19	0.10

ITRF2014