Station AV40

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)
North-2.250.202024-02-1913.550.48
East-2.740.222024-02-1913.880.45
Up3.040.392024-02-19-20.261.39

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)
2009-08-10 2009.60507 1.71 0.49 2.38 0.47 -0.23 1.47 antenna
2014-06-23 2014.47365 0.4 0.49 1.32 0.47 -1.41 1.5 earthquake 7.9 usc000rki5 1044.5
2018-01-23 2018.06023 -0.67 0.5 0.38 0.47 0.51 1.48 earthquake 7.9 us2000cmy3 935
2020-07-22 2020.55578 -1.32 2.15 4.62 1.98 5.47 7.85 earthquake 7.8 at00qdux98 338.1
2020-10-19 2020.79945 20.28 21.18 -35.04 28.56 -69.41 69.37 earthquake 7.6 us6000c9hg 264
2021-07-29 2021.57221 20.28 21.18 -35.04 28.56 -69.41 69.37 earthquake 8.2 ak0219neiszm 385.2
2023-07-16 2023.53662 20.28 21.18 -35.04 28.56 -69.41 69.37 earthquake 7.2 us7000kg30 194.1

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)
2020-07-22 2020.55578 -0.84 0.88 0.0001 1.65 0.82 0.0001 -2.22 3.19 0.0001
2020-10-19 2020.79945 8.05 8.2 0.0001 -13.6 11 0.0001 -19.66 26.86 0.0001
2021-07-28 2021.57221 -21.72 22.98 0.0001 37.82 30.93 0.0001 84.83 75.24 0.0001

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)
North-22.760.232024-02-19202.061.28
East-8.130.242024-02-1966.841.20
Up2.620.492024-02-19-29.684.72

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)
2009-08-10 2009.60507 0.6 1.82 3.99 1.79 4.05 5.73 antenna
2014-06-23 2014.47365 0.3 0.5 0.81 0.47 -0.64 1.57 earthquake 7.9 usc000rki5 1044.5
2018-01-23 2018.06023 -1.37 0.51 0.29 0.47 1.35 1.53 earthquake 7.9 us2000cmy3 935
2020-07-22 2020.55578 -2.15 2.15 3.91 1.98 5.24 7.86 earthquake 7.8 at00qdux98 338.1
2020-10-19 2020.79945 21.07 21.66 -33.07 20.34 0.37 70.94 earthquake 7.6 us6000c9hg 264
2021-07-29 2021.57221 21.07 21.66 -33.07 20.34 0.37 70.94 earthquake 8.2 ak0219neiszm 385.2
2023-07-16 2023.53662 21.07 21.66 -33.07 20.34 0.37 70.94 earthquake 7.2 us7000kg30 194.1

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)
2020-07-22 2020.55578 -0.7 0.89 0.0001 1.75 0.82 0.0001 -2.04 3.2 0.0001
2020-10-19 2020.79945 8.29 8.38 0.0001 -13.08 7.86 0.0001 7.55 27.46 0.0001
2021-07-28 2021.57221 -22.67 23.51 0.0001 35.49 22.07 0.0001 9.43 76.94 0.0001

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 Alaska_ITRF2014 Network