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
North21.640.1420181211-190.7110.032001.4900752001180
East-22.670.1620181211213.5411.052001.4900752001180
Up0.921.0020181211-6.5162.822001.4900752001180

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)
20031223 2003.97467 -0.21 0.47 -0.26 0.51 0.72 1.74 earthquake 6.6 nc21323712 262.1
20100404 2010.25462 -0.49 0.43 -0.51 0.47 1.54 1.7 earthquake 7.2 ci14607652 395.5
20180527 2018.39973 -0.57 0.45 0.33 0.62 -1.71 1.67 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 noiseAmplitude of BP filtered noise (mm)n2 (spectral index of second power law)Amplitude of second power law (mm/yr^(n2/4))
North0.582.291.000.500002.0000020.1832.000.00
East0.622.521.000.500002.0000020.1572.000.01
Up2.086.841.000.500002.0000010.0002.001.68

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)
19991017 1999.79124 -1.33 2.31 0.0001 -0.81 2.55 0.0001 -0.66 14.73 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)
North2001.4900752001180-0.240.11-0.530.120.010.09-0.030.09-0.020.020.010.02
East2001.4900752001180-0.560.12-0.120.120.170.09-0.110.09-0.070.020.070.02
Up2001.4900752001180-0.970.310.500.31-0.340.21-0.940.210.300.080.100.08

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

Velocity (mm/yr)Velocity standard deviation (mm/yr)Last observationIntercept (mm)Intercept standard deviation (mm)Reference dateReference yearReference day of year
North10.640.1820181211-105.3812.922001.4900752001180
East-34.720.2020181211331.5114.072001.4900752001180
Up0.531.1920181211-15.5173.282001.4900752001180

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)
20031223 2003.97467 0.08 0.59 -0.61 0.64 0.68 1.85 earthquake 6.6 nc21323712 262.1
20100404 2010.25462 -0.3 0.55 -1.55 0.59 2.06 1.81 earthquake 7.2 ci14607652 395.5
20180527 2018.39973 -4.31 0.56 -0.52 0.61 -0.59 1.77 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 noiseAmplitude of BP filtered noise (mm)n2 (spectral index of second power law)Amplitude of second power law (mm/yr^(n2/4))
North0.573.071.000.500002.0000020.1592.000.00
East0.583.361.000.500002.0000020.1632.000.00
Up2.266.701.000.500002.0000010.0002.002.19

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)
19991017 1999.79124 1.67 2.98 0.0001 -2.42 3.25 0.0001 1.9 17.2 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)
North2001.4900752001180-0.540.13-0.800.13-0.050.10-0.140.100.000.03-0.070.03
East2001.4900752001180-0.650.140.040.140.230.11-0.140.11-0.100.030.050.03
Up2001.4900752001180-0.820.330.970.33-0.430.22-1.080.220.310.080.030.08

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

Velocity (mm/yr)Velocity standard deviation (mm/yr)Last observationIntercept (mm)Intercept standard deviation (mm)Reference dateReference yearReference day of year
North21.740.1820181211-182.2810.152001.4900752001180
East-22.530.1720181211225.079.792001.4900752001180
Up0.920.6720181211-4.4340.662001.4900752001180

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)
20031223 2003.97467 -0.13 0.19 0.29 0.21 0.02 1.06 earthquake 6.6 nc21323712 262.1
20100404 2010.25462 -0.12 0.19 0.15 0.21 0.48 1.04 earthquake 7.2 ci14607652 395.5
20180527 2018.39973 0.08 0.19 0.02 0.21 -0.89 1.03 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 noiseAmplitude of BP filtered noise (mm)n2 (spectral index of second power law)Amplitude of second power law (mm/yr^(n2/4))
North0.710.001.000.500002.0000010.0002.000.44
East0.610.281.000.500002.0000010.0002.000.38
Up2.412.741.000.500002.0000010.0002.001.32

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)
19991017 1999.79124 -3.25 2.39 0.0001 -3.77 2.3 0.0001 -0.9 9.54 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)
North2001.49007520011800.210.030.180.030.000.02-0.010.020.010.01-0.010.01
East2001.49007520011800.230.030.030.030.000.02-0.010.020.000.010.010.01
Up2001.4900752001180-1.120.17-0.100.170.160.12-0.190.12-0.060.060.030.06

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.

« Back to CentralCalifornia network