Alaska_ITRF2014 Network

Station ZAN1

Last observation
Apr 14, 2024(2 days ago)
Closest stations

5 closest stations in all networks

This station is not in any other networks.

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)
North5.820.192024-04-14-58.783.98
East-6.200.202024-04-1484.353.95
Up4.720.392024-04-14-45.9510.75

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)
2003-04-24 2003.30938 -3.9 0.58 -10.31 0.54 3.16 1.93 antenna
2007-05-11 2007.35592 1.48 0.49 9.7 0.46 5.11 1.45 antenna
2016-01-24 2016.06297 0.99 0.49 0.71 0.46 -3.52 1.45 earthquake 7.1 us10004gqp 267
2018-01-23 2018.06023 -3.1 0.49 -1.55 0.46 -2.76 1.47 earthquake 7.9 us2000cmy3 582.9
2018-11-30 2018.9117 6.39 1.41 -6.43 1.34 -12.46 4.56 earthquake 7 ak20419010 13
2020-07-22 2020.55578 0.06 0.5 -0.14 0.47 1.19 1.61 earthquake 7.8 at00qdux98 859.2
2020-10-19 2020.79945 1.08 0.51 -1.57 0.47 -1.13 1.62 earthquake 7.6 us6000c9hg 938.5
2021-07-29 2021.57221 2.91 0.6 -1.56 0.58 -2.93 1.75 earthquake 8.2 ak0219neiszm 808.3

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)
2002-11-02 2002.83778 0.65 1.19 0.0001 -3.11 1.19 0.0001 -1.54 3.12 0.0001
2018-11-29 2018.9117 2.8 0.48 0.0001 1.19 0.47 0.0001 -1.33 1.42 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-12.190.242024-04-14205.717.96
East-16.130.252024-04-14268.107.89
Up2.830.572024-04-14-139.0921.86

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)
2003-04-24 2003.30938 -4.57 1.4 -9.43 1.34 -5.54 4.43 antenna
2007-05-11 2007.35592 -10.15 1.76 11.58 1.79 1.53 4.74 antenna
2016-01-24 2016.06297 -0.01 0.49 0.42 0.47 -2.79 1.5 earthquake 7.1 us10004gqp 267
2018-01-23 2018.06023 -4.2 0.49 -1.58 0.47 -1.06 1.5 earthquake 7.9 us2000cmy3 582.9
2018-11-30 2018.9117 9.25 1.43 -5.33 1.36 -17.59 4.66 earthquake 7 ak20419010 13
2020-07-22 2020.55578 0.19 0.51 -0.49 0.48 2.26 1.64 earthquake 7.8 at00qdux98 859.2
2020-10-19 2020.79945 0.96 0.51 -0.92 0.48 -3.1 1.65 earthquake 7.6 us6000c9hg 938.5
2021-07-29 2021.57221 2.88 0.61 -1.67 0.59 0.9 1.79 earthquake 8.2 ak0219neiszm 808.3

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)
2002-11-02 2002.83778 0.37 2.29 0.0001 -3.73 2.28 0.0001 20.71 6.26 0.0001
2018-11-29 2018.9117 1.74 0.49 0.0001 0.84 0.48 0.0001 0.38 1.47 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.

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