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The NCEDC is home to achives of continuous and survey mode
GPS data.
- Continuous GPS
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The extended Bay Area Regional Deformation (BARD) Network
consists of 60 continuously operating
GPS (CGPS) stations in northern and central California,
with special emphasis on monitoring deformation near Parkfield,
the Long Valley cauldera, and in the San Francisco Bay area.
A portion of the stations making up the extended network are archived at the NCEDC. These include 26 BARD backbone stations operated by the Berkeley Seismological Lab, GPS stations in the Long Valley area operated by the USGS-CVO and several CORS sites, which have a variety of operators. The NCEDC archives those data from the extended network that either do not have a publically accessible archive or have a history of archival, such that the NCEDC is the de facto source for these data to the geodetic community.
- Survey Mode GPS
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Suvery-mode GPS data collected in the western United States,
primarily in northern California, are archived at the NCEDC.
This includes a data set of over 6000 occupations collected in
1992-present by the USGS Menlo Park in California,
Oregon, Washington, Nevada, Utah, Idaho, and Alaska. Similar efforts are planned
for other high-precision GPS datasets that have been collected by
NGS, Caltrans, and other university, government, and commercial agencies.
When you use data from the NCEDC, please provide a
proper acknowledgement of the data source.
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