Station HOLP

NA-fixed

Plots

Plot showing NA-fixed data (All data)

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 observationIntercept (mm)Intercept standard deviation (mm)Reference dateReference yearReference day of year
North25.710.762022-01-28-357.070.841995.2984261995110
East-25.940.552022-01-28370.790.861995.2984261995110
Up-2.301.572022-01-2823.442.521995.2984261995110

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)
1995-05-20 1995.38056 -7.77 0.85 -8.06 0.87 19.36 2.54 antenna
1999-10-16 1999.7885 1 1.21 -0.74 1.31 -0.67 4 earthquake 7.1 ci9108652 190.7
2002-03-19 2002.21081 22.24 0.84 -8.75 0.8 -31.8 2.35 other
2010-04-04 2010.25462 0.43 0.84 -1.13 0.85 0.05 2.45 earthquake 7.2 ci14607652 323.9
2012-10-13 2012.78303 3.28 0.84 0.22 0.85 -1.52 2.45 antenna
2019-07-04 2019.50376 8.2 40.82 19.35 33.54 42.18 93.64 earthquake 6.4 ci38443183 206.6
2019-07-06 2019.50924 8.2 40.82 19.35 33.54 42.18 93.64 earthquake 7.1 ci38457511 210.7
2021-06-24 2021.47639 8.2 40.82 19.35 33.54 42.18 93.64 antenna

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 noiseAmplitude of BP filtered noise (mm)n2 (spectral index of second power law)Amplitude of second power law (mm/yr^(n2/4))
North0.711.461.000.500002.0000010.0002.003.58
East0.712.151.000.500002.0000010.0002.002.54
Up2.595.551.000.500002.0000010.0002.007.20

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)
1999-10-16 1999.79124 -0.55 0.54 0.0001 -0.01 0.54 0.0001 0.56 1.64 0.0001
2019-07-05 2019.50924 -3.53 28.45 0.0001 -12.88 23.33 0.0001 -28.52 65.13 0.0001

Seasonal

Reference dateReference yearReference day of yearAmplitude of cosine (365.25-day period), mmStandard deviation of cosine amplitude (365.25-day period)Amplitude of sine (365.25-day period), mmStandard deviation of sine amplitude (365.25-day period)Amplitude of cosine (180.625-day period), mmStandard deviation of cosine amplitude (180.625-day period)Amplitude of sine (180.625-day period), mmStandard deviation of sine amplitude (180.625-day period)Amplitude of cosine (14.76-day period), mmStandard deviation of cosine amplitude (14.76-day period)Amplitude of sine (14.76-day period), mmStandard deviation of sine amplitude (14.76-day period)Amplitude of cosine (13.63-day period), mmStandard deviation of cosine amplitude (13.63-day period)Amplitude of sine (13.63-day period), mmStandard deviation of sine amplitude (13.63-day period)
North1995.29842619951101.400.19-1.460.200.070.11-0.110.11-0.010.020.060.02
East1995.2984261995110-0.440.17-1.160.17-0.120.100.230.10-0.090.020.050.02
Up1995.29842619951103.290.46-2.370.470.740.271.190.270.090.07-0.030.07

ITRF2008

Plots

Plot showing ITRF2008 data (All data)

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 observationIntercept (mm)Intercept standard deviation (mm)Reference dateReference yearReference day of year
North14.910.562022-01-28-212.490.901995.2984261995110
East-38.200.502022-01-28543.050.921995.2984261995110
Up-2.861.522022-01-2828.822.651995.2984261995110

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)
1995-05-20 1995.38056 -7.24 0.91 -8.99 0.94 20.33 2.67 antenna
1999-10-16 1999.7885 1.43 1.32 -1.29 1.43 -2.85 4.19 earthquake 7.1 ci9108652 190.7
2002-03-19 2002.21081 22.48 0.9 -8.51 0.86 -32.6 2.46 other
2010-04-04 2010.25462 0.44 0.9 -2 0.91 0.44 2.58 earthquake 7.2 ci14607652 323.9
2012-10-13 2012.78303 3.13 0.9 0.2 0.91 -1.45 2.58 antenna
2019-07-04 2019.50376 24.96 35.53 22.91 33.46 22.41 95.16 earthquake 6.4 ci38443183 206.6
2019-07-06 2019.50924 24.96 35.53 22.91 33.46 22.41 95.16 earthquake 7.1 ci38457511 210.7
2021-06-24 2021.47639 24.96 35.53 22.91 33.46 22.41 95.16 antenna

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 noiseAmplitude of BP filtered noise (mm)n2 (spectral index of second power law)Amplitude of second power law (mm/yr^(n2/4))
North0.662.331.000.500002.0000020.2192.002.57
East0.682.821.000.500002.0000010.0002.002.25
Up2.486.741.000.500002.0000010.0002.006.87

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)
1999-10-16 1999.79124 -0.61 0.56 0.0001 0.1 0.58 0.0001 1.66 1.7 0.0001
2019-07-05 2019.50924 -14.51 24.69 0.0001 -15.45 23.23 0.0001 -13.69 66.13 0.0001

Seasonal

Reference dateReference yearReference day of yearAmplitude of cosine (365.25-day period), mmStandard deviation of cosine amplitude (365.25-day period)Amplitude of sine (365.25-day period), mmStandard deviation of sine amplitude (365.25-day period)Amplitude of cosine (180.625-day period), mmStandard deviation of cosine amplitude (180.625-day period)Amplitude of sine (180.625-day period), mmStandard deviation of sine amplitude (180.625-day period)Amplitude of cosine (14.76-day period), mmStandard deviation of cosine amplitude (14.76-day period)Amplitude of sine (14.76-day period), mmStandard deviation of sine amplitude (14.76-day period)Amplitude of cosine (13.63-day period), mmStandard deviation of cosine amplitude (13.63-day period)Amplitude of sine (13.63-day period), mmStandard deviation of sine amplitude (13.63-day period)
North1995.29842619951101.550.19-1.890.190.150.13-0.050.13-0.030.020.000.02
East1995.2984261995110-0.530.17-1.230.17-0.200.100.290.10-0.110.030.050.03
Up1995.29842619951102.880.47-2.100.480.780.281.260.280.080.08-0.070.08

Filtered

Plots

Plot showing Filtered data (All data)

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 observationIntercept (mm)Intercept standard deviation (mm)Reference dateReference yearReference day of year
North25.630.842022-01-28-298.710.601999.131417199949
East-26.050.492022-01-28293.900.451999.131417199949
Up-2.362.272022-01-2844.162.051999.131417199949

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 0.66 0.76 0.03 0.65 2.5 3.15 earthquake 7.1 ci9108652 190.7
2002-03-19 2002.21081 20.63 0.55 -8.69 0.41 -33.99 1.96 other
2010-04-04 2010.25462 -0.09 0.55 -0.42 0.43 -2.73 1.96 earthquake 7.2 ci14607652 323.9
2012-10-13 2012.78303 2.49 0.55 0.27 0.43 -0.53 1.96 antenna
2019-07-04 2019.50376 -9.07 37.74 58.98 22.26 -54.77 102.35 earthquake 6.4 ci38443183 206.6
2019-07-06 2019.50924 -9.07 37.74 58.98 22.26 -54.77 102.35 earthquake 7.1 ci38457511 210.7
2021-06-24 2021.47639 -9.07 37.74 58.98 22.26 -54.77 102.35 antenna

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 noiseAmplitude of BP filtered noise (mm)n2 (spectral index of second power law)Amplitude of second power law (mm/yr^(n2/4))
North0.600.001.000.500002.0000030.5302.003.74
East0.600.011.000.500002.0000020.1302.002.19
Up2.940.221.000.500002.0000010.0002.0010.08

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)
1999-10-16 1999.79124 -0.05 0.37 0.0001 0.47 0.3 0.0001 0.61 1.4 0.0001
2019-07-05 2019.50924 7.92 26.37 0.0001 -40.19 15.55 0.0001 36.64 71.52 0.0001

Seasonal

Reference dateReference yearReference day of yearAmplitude of cosine (365.25-day period), mmStandard deviation of cosine amplitude (365.25-day period)Amplitude of sine (365.25-day period), mmStandard deviation of sine amplitude (365.25-day period)Amplitude of cosine (180.625-day period), mmStandard deviation of cosine amplitude (180.625-day period)Amplitude of sine (180.625-day period), mmStandard deviation of sine amplitude (180.625-day period)Amplitude of cosine (14.76-day period), mmStandard deviation of cosine amplitude (14.76-day period)Amplitude of sine (14.76-day period), mmStandard deviation of sine amplitude (14.76-day period)Amplitude of cosine (13.63-day period), mmStandard deviation of cosine amplitude (13.63-day period)Amplitude of sine (13.63-day period), mmStandard deviation of sine amplitude (13.63-day period)
North1999.1314171999490.850.230.300.23-0.110.17-0.050.170.000.010.000.01
East1999.1314171999490.020.12-0.560.12-0.030.08-0.030.080.010.01-0.030.01
Up1999.1314171999493.560.512.100.51-0.580.26-0.220.260.040.06-0.050.06

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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