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

VelocitySigmaLast observationIntercept (mm)Intercept standard deviation (mm)Reference dateReference yearReference day of year
North26.590.1320180421-322.220.50199519951
East-26.010.1520180421313.130.47199519951
Up0.250.2320180421-9.141.59199519951

Offsets

Decimal dateN offset N uncertaintyE offsetE uncertainty U offsetU uncertaintyType
19950224 1995.14784 -0.74 0.5 1.82 0.47 2.3 1.6 antenna
20001024 2000.81314 1.9 0.64 2.07 0.62 2.52 1.76 other
20120922 2012.72553 2.39 0.47 2.74 0.45 1.69 1.41 antenna

Noise

WhitenoiseAmplitude 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

Post-seismic

Decimal dateN log size N log uncertaintyN time constantE log size E log uncertaintyE time constantU log size U log uncertaintyU time constant
19991017 1999.79124 0.47 0.17 0.0001 -0.48 0.16 0.0001 -0.03 0.46 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 (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)
North1995199511.090.070.460.07-0.150.05-0.020.050.000.020.050.02
East1995199511.320.070.410.070.260.05-0.120.05-0.030.020.070.02
Up1995199510.510.23-0.120.23-0.450.17-0.690.170.100.080.050.08

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

VelocitySigmaLast observationIntercept (mm)Intercept standard deviation (mm)Reference dateReference yearReference day of year
North15.760.1320180421-194.630.50199519951
East-38.230.1520180421458.760.47199519951
Up-0.220.2320180421-2.881.59199519951

Offsets

Decimal dateN offset N uncertaintyE offsetE uncertainty U offsetU uncertaintyType
19950224 1995.14784 -0.57 0.5 3.29 0.47 1.93 1.6 antenna
20001024 2000.81314 1.96 0.64 2.15 0.62 3.11 1.76 other
20120922 2012.72553 2.59 0.47 3.03 0.45 2.07 1.41 antenna

Noise

WhitenoiseAmplitude 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

Post-seismic

Decimal dateN log size N log uncertaintyN time constantE log size E log uncertaintyE time constantU log size U log uncertaintyU time constant
19991017 1999.79124 0.44 0.17 0.0001 -0.55 0.16 0.0001 0.12 0.46 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 (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)
North1995199511.410.070.640.07-0.090.05-0.090.050.010.020.000.02
East1995199511.420.070.340.070.360.05-0.100.05-0.050.020.070.02
Up1995199510.240.23-0.510.23-0.530.17-0.700.170.070.080.010.08

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

VelocitySigmaLast observationIntercept (mm)Intercept standard deviation (mm)Reference dateReference yearReference day of year
North26.610.1520180421-260.770.491999.131417199949
East-25.990.1720180421247.880.461999.131417199949
Up-0.100.2620180421-3.121.471999.131417199949

Offsets

Decimal dateN offset N uncertaintyE offsetE uncertainty U offsetU uncertaintyType
20001024 2000.81314 1.72 0.64 0.25 0.62 0.3 1.76 other
20120922 2012.72553 2.61 0.48 2.31 0.45 1.13 1.42 antenna

Noise

WhitenoiseAmplitude 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

Post-seismic

Decimal dateN log size N log uncertaintyN time constantE log size E log uncertaintyE time constantU log size U log uncertaintyU time constant
19991017 1999.79124 0.01 0.17 0.0001 0.33 0.16 0.0001 0.66 0.48 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 (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)
North1999.1314171999490.120.08-0.380.08-0.060.06-0.030.060.010.020.010.02
East1999.1314171999490.380.08-0.260.08-0.060.05-0.100.05-0.020.020.020.02
Up1999.1314171999490.490.25-0.060.260.090.190.180.19-0.050.09-0.060.09

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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