Station DAM3

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
North24.420.872020-12-09-107.6379.352003.5503082003202
East-22.420.962020-12-09529.8687.932003.5503082003202
Up-0.921.412020-12-09-138.28129.932003.5503082003202

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 2.81 1.46 0.98 1.75 -1.16 2.61 earthquake 6.6 nc21323712 289.6
2010-04-04 2010.25462 15.66 1.98 9.3 2.15 -11.26 3.07 earthquake 7.2 ci14607652 367.4
2012-10-11 2012.77755 15.66 1.98 9.3 2.15 -11.26 3.07 antenna
2018-05-27 2018.39973 0.05 1.28 -0.35 1.5 -0.22 2.37 Reference Frame Change: IGb08 to IGS14
2019-07-04 2019.50376 2.75 2.26 1.6 2.6 -0.67 6.29 earthquake 6.4 ci38443183 172.5
2019-07-06 2019.50924 2.85 3.88 3.02 4.52 7.09 9.31 earthquake 7.1 ci38457511 174.5

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)
1999-10-17 1999.79124 -25.48 17.26 0.0001 -67.5 19.12 0.0001 32.03 28.24 0.0001
2019-07-06 2019.50924 0.14 1.51 0.0001 -1.99 1.79 0.0001 -2.17 2.94 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)
North2003.5503082003202-2.130.33-1.090.33-0.030.23-0.140.23-0.040.06-0.050.06
East2003.5503082003202-2.670.43-0.630.430.250.33-0.410.33-0.020.08-0.030.08
Up2003.55030820032021.650.521.220.53-1.180.38-0.480.380.330.15-0.020.15

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
North13.290.922020-12-09-31.6883.912003.5503082003202
East-34.411.012020-12-09643.0991.142003.5503082003202
Up-1.481.542020-12-09-166.78141.862003.5503082003202

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 2.98 1.54 1.02 1.64 -2.13 2.75 earthquake 6.6 nc21323712 289.6
2010-04-04 2010.25462 16.42 2.09 9.58 2.29 -11.1 3.35 earthquake 7.2 ci14607652 367.4
2012-10-11 2012.77755 16.42 2.09 9.58 2.29 -11.1 3.35 antenna
2018-05-27 2018.39973 0.1 1.35 -0 1.43 -0.23 2.5 Reference Frame Change: IGb08 to IGS14
2019-07-04 2019.50376 4.04 2.4 1.99 2.58 -2.92 6.47 earthquake 6.4 ci38443183 172.5
2019-07-06 2019.50924 3.47 4.12 3.88 4.5 6.86 9.64 earthquake 7.1 ci38457511 174.5

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)
1999-10-17 1999.79124 -21.38 18.25 0.0001 -68.71 19.83 0.0001 38.84 30.84 0.0001
2019-07-06 2019.50924 0.03 1.59 0.0001 -2.53 1.77 0.0001 -1.06 3.08 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)
North2003.5503082003202-2.190.35-0.880.35-0.020.24-0.170.25-0.140.07-0.100.07
East2003.5503082003202-2.630.60-0.420.620.340.34-0.410.34-0.060.070.000.07
Up2003.55030820032022.310.551.580.56-1.070.40-0.220.400.300.160.010.16

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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