Station AV04

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
North-10.940.202023-01-3091.560.472004.6954142004255
East2.250.222023-01-3017.960.452004.6954142004255
Up3.890.402023-01-30-8.381.402004.6954142004255

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)
2006-09-04 2006.67351 17.35 0.9 -45.63 0.91 -22.21 2.18 antenna
2008-09-22 2008.72553 1.72 0.5 0.45 0.47 -0.4 1.52 antenna
2016-01-24 2016.06297 -0.2 5.81 -37.65 5.81 38.86 15.37 earthquake 7.1 us10004gqp 30.6
2018-01-23 2018.06023 -36.41 1.46 -4.35 1.37 64.43 4.81 earthquake 7.9 us2000cmy3 452.6
2018-11-30 2018.9117 -43.64 0.51 4.3 0.47 40.08 1.59 earthquake 7 ak20419010 292.4
2020-07-22 2020.55578 -5.23 0.5 -5.3 0.47 6.98 1.58 earthquake 7.8 at00qdux98 571.3
2020-10-19 2020.79945 -21.81 0.5 -6.02 0.47 27.14 1.59 earthquake 7.6 us6000c9hg 649.5
2021-07-29 2021.57221 8.08 0.49 3.58 0.47 -14.13 1.49 earthquake 8.2 ak0219neiszm 521.4

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

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)
2016-01-24 2016.06297 3.44 1.56 0.0001 12.55 1.57 0.0001 -13.45 4.02 0.0001
2018-01-23 2018.06023 18.26 0.51 0.0001 -0.24 0.49 0.0001 -20.89 1.59 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)
North2004.695414200425522.660.09-6.560.09-8.190.060.580.06-0.200.030.020.03
East2004.695414200425518.090.08-8.520.08-4.620.062.130.06-0.230.02-0.050.02
Up2004.6954142004255-38.670.2817.780.2810.840.21-3.710.21-0.110.10-0.070.10

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-28.860.272023-01-30398.650.622004.6899382004253
East-4.620.292023-01-30124.010.592004.6899382004253
Up1.770.662023-01-30-12.782.032004.6899382004253

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)
2006-09-04 2006.67351 5.83 2.16 -72.27 2.18 -7.62 6.31 antenna
2008-09-22 2008.72553 -1.74 1.91 5.8 1.86 -0.1 6.19 antenna
2016-01-24 2016.06297 -14.85 6.14 -19.73 6.13 41.96 16.36 earthquake 7.1 us10004gqp 30.6
2018-01-23 2018.06023 -20.16 1.47 -5.77 1.39 66.31 4.89 earthquake 7.9 us2000cmy3 452.6
2018-11-30 2018.9117 -36.19 0.51 2.91 0.48 41.42 1.61 earthquake 7 ak20419010 292.4
2020-07-22 2020.55578 -5.15 0.51 -5.21 0.48 6.78 1.61 earthquake 7.8 at00qdux98 571.3
2020-10-19 2020.79945 -19.62 0.51 -8.22 0.48 27.27 1.62 earthquake 7.6 us6000c9hg 649.5
2021-07-29 2021.57221 7.76 0.5 3.6 0.47 -13.11 1.52 earthquake 8.2 ak0219neiszm 521.4

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

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)
2016-01-24 2016.06297 7.38 1.67 0.0001 9.02 1.68 0.0001 -14.59 4.36 0.0001
2018-01-23 2018.06023 11.78 0.52 0.0001 -0.08 0.5 0.0001 -19.12 1.62 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)
North2004.689938200425326.670.12-10.200.12-8.750.093.220.08-0.490.04-0.290.04
East2004.689938200425317.280.12-7.090.12-4.740.082.430.08-0.320.03-0.300.03
Up2004.6899382004253-35.210.3919.770.398.320.29-3.730.280.480.130.090.13

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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