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SKEL
Automatic Processing

North Data

East Data

Up Data

Plot (.gmt)

North America fixed

ITRF2000

Regionally filtered

Cleaned/Detrended

Last 30 days

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Last year

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Pillsbury home

USGS Campaign list

Stationinfo (field logs, photos,etc.)

SKEL
Cleaned/Detrended


Vel(mm/a) Vel-sig(mm/a) White-Noise Random-Walk Flicker-Noise
N: 6.12 1.35 2.000 2.000 1.000
E: -13.02 1.35 2.000 2.000 1.000
U: 2.87 4.06 6.000 6.000 3.000
Error bars are plus/minus one standard deviation
Error bars on individual observations = formal-error x scale-factor.
Currently the scale-factors are: N:3, E:4, U:3

Red points are positions determined using final orbits
Blue points are positions determined using preliminary orbits
Vel-stddev = sqrt(WN**2+RW**2)
where WN is a white noise contribution from propagating the error bars on the observations
and RW is a random walk contribution (= a*sqrt(timespan)/timespan where a is 0.001 m/yr**1/2)