NA-fixed

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
North2.320.1520180721-22.550.471999.8268311999303
East-2.800.162018072125.740.451999.8268311999303
Up0.570.2420180721-4.261.351999.8268311999303

Offsets

Decimal date N offset (mm) N uncertainty (mm) E offset (mm) E uncertainty (mm) U offset (mm) U uncertainty (mm) Type
20050616 2005.45448 0.32 0.49 0.61 0.46 -1.26 1.44 earthquake
20160516 2016.37235 5.12 0.48 4.27 0.45 -9.09 1.41 other

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))
North0.851.701.000.500002.0000010.0002.000.50
East0.841.401.000.500002.0000010.0002.000.60
Up3.206.401.000.500002.0000010.0002.000.50

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 (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)
North1999.8268311999303-0.360.080.230.080.030.060.040.060.040.020.040.02
East1999.82683119993030.310.080.620.080.000.050.220.050.040.02-0.020.02
Up1999.82683119993032.110.25-1.490.250.290.19-0.640.19-0.070.09-0.330.09

ITRF2008

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
North-8.650.152018072179.480.471999.8268311999303
East-16.570.1620180721155.900.451999.8268311999303
Up0.330.2420180721-1.981.351999.8268311999303

Offsets

Decimal date N offset (mm) N uncertainty (mm) E offset (mm) E uncertainty (mm) U offset (mm) U uncertainty (mm) Type
20050616 2005.45448 0.46 0.49 0.71 0.46 -1.28 1.44 earthquake
20160516 2016.37235 4.98 0.48 4.74 0.45 -8.96 1.41 other

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))
North0.851.701.000.500002.0000010.0002.000.50
East0.841.401.000.500002.0000010.0002.000.60
Up3.206.401.000.500002.0000010.0002.000.50

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 (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)
North1999.8268311999303-0.430.080.560.080.160.060.010.060.000.020.060.02
East1999.82683119993030.360.080.600.08-0.060.050.210.050.110.02-0.040.02
Up1999.82683119993032.350.25-1.890.250.420.19-0.470.19-0.090.09-0.290.09

Filtered

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
North2.340.0520180721-22.280.201999.8268311999303
East-2.700.042018072125.460.151999.8268311999303
Up0.360.2020180721-2.170.661999.8268311999303

Offsets

Decimal date N offset (mm) N uncertainty (mm) E offset (mm) E uncertainty (mm) U offset (mm) U uncertainty (mm) Type
20050616 2005.45448 -0.27 0.2 -0.29 0.15 0.43 0.68 earthquake
20160516 2016.37235 5.07 0.2 4.62 0.15 -4 0.67 other

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 (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)
North1999.82683119993030.000.03-0.160.030.010.020.000.02-0.010.010.010.01
East1999.8268311999303-0.090.02-0.220.02-0.040.02-0.020.020.020.010.020.01
Up1999.8268311999303-1.350.14-0.700.14-0.200.11-0.110.110.040.040.010.04

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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