Station CCCC

NA2014

Plots

Plot showing NA2014 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
North10.540.162024-03-27-191.528.472000.6844632000251
East-8.140.112024-03-27109.556.842000.6844632000251
Up-0.950.492024-03-27-30.5026.512000.6844632000251

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)
2003-12-23 2003.97467 -0.17 0.5 -2.5 0.51 -2.44 1.55 earthquake 6.6 nc21323712 311
2006-01-26 2006.06845 -0.32 0.58 -1.42 0.51 0.52 1.76 antenna
2007-05-16 2007.36961 0.32 0.49 -1 0.45 -0.94 1.51 antenna
2010-04-04 2010.25462 -1.66 0.49 -0.29 0.45 0.24 1.52 earthquake 7.2 ci14607652 424.9
2019-07-04 2019.50376 -21.74 6.39 -25.13 6.68 28.25 20.52 earthquake 6.4 ci38443183 21.6
2019-07-06 2019.50924 214.2 4.34 -44.92 4.66 -17.08 14.35 earthquake 7.1 ci38457511 23.1
2020-06-04 2020.42437 -5.91 1.55 -0.9 1.51 -1.62 5.04 earthquake 5.5 ci39462536 22.7
2020-06-24 2020.47912 -0.82 0.76 0.37 0.8 2.83 2.54 earthquake 5.8 ci39493944 101.6
2020-07-03 2020.50376 -1.23 0.73 -1.31 0.77 -6.07 2.4 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))
North0.582.291.000.500002.0000020.1342.000.22
East0.682.401.000.500002.0000020.1462.000.01
Up2.087.341.000.500002.0000010.0002.000.65

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)
1999-10-15 1999.7885 2.07 2.07 0.0001 3.08 1.63 0.0001 8.14 6.45 0.0001
2019-07-03 2019.50376 18.58 4.35 0.0001 -9.11 4.54 0.0001 -10.06 14.01 0.0001
2019-07-05 2019.50924 -8.31 3.73 0.0001 3.93 3.94 0.0001 10.78 12.13 0.0001
2020-06-04 2020.42437 2.56 0.62 0.0001 -0.62 0.59 0.0001 1.53 2.04 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)
North2000.6844632000251-1.130.100.050.10-0.090.070.120.070.030.020.050.020.030.020.010.02
East2000.6844632000251-0.430.100.860.10-0.200.07-0.040.07-0.020.020.170.020.090.020.010.02
Up2000.68446320002510.400.25-0.100.24-0.350.181.020.18-0.020.07-0.030.07-0.130.07-0.420.07

ITRF2014

Plots

Plot showing ITRF2014 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
North-0.230.142024-03-27-64.388.292000.6844632000251
East-20.590.152024-03-27255.248.612000.6844632000251
Up-1.440.472024-03-27-52.3826.262000.6844632000251

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)
2003-12-23 2003.97467 0.06 0.57 -1.6 0.6 -3.29 1.64 earthquake 6.6 nc21323712 311
2006-01-26 2006.06845 -0.36 0.65 -2.2 0.66 0.79 1.85 antenna
2007-05-16 2007.36961 0.53 0.55 -0.89 0.57 -0.81 1.6 antenna
2010-04-04 2010.25462 -1.55 0.55 -0.32 0.57 0.63 1.6 earthquake 7.2 ci14607652 424.9
2019-07-04 2019.50376 -17.1 7.49 -27.3 8.03 19.8 21.6 earthquake 6.4 ci38443183 21.6
2019-07-06 2019.50924 212.94 5.05 -42.25 5.49 -12.17 15.04 earthquake 7.1 ci38457511 23.1
2020-06-04 2020.42437 -6.48 1.77 0.57 1.87 -0.62 5.28 earthquake 5.5 ci39462536 22.7
2020-06-24 2020.47912 -0.47 0.91 0.47 0.98 2.68 2.7 earthquake 5.8 ci39493944 101.6
2020-07-03 2020.50376 -2.02 0.87 -0.65 0.93 -5.83 2.56 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))
North0.553.161.000.500002.0000020.1662.000.01
East0.683.191.000.500002.0000020.1702.000.01
Up1.988.431.000.500002.0000010.0002.000.41

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)
1999-10-15 1999.7885 3.26 1.99 0.0001 4.92 2.06 0.0001 13.64 6.36 0.0001
2019-07-03 2019.50376 16.18 5.11 0.0001 -7.12 5.47 0.0001 -5.73 14.76 0.0001
2019-07-05 2019.50924 -6.56 4.38 0.0001 1.69 4.72 0.0001 7.62 12.78 0.0001
2020-06-04 2020.42437 3.09 0.71 0.0001 -1.12 0.74 0.0001 1.4 2.13 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)
North2000.6844632000251-1.070.120.340.12-0.170.090.110.090.060.020.020.02-0.070.020.070.02
East2000.6844632000251-0.240.120.970.12-0.210.09-0.190.09-0.020.030.210.030.080.030.050.03
Up2000.68446320002511.080.27-0.160.27-0.210.190.820.19-0.010.07-0.020.07-0.130.07-0.410.07

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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