HR: 0800h
AN: G21B-1266    [Abstracts]
TI: The Plate Boundary Observatory: Data Management Progress and Highlights
AU: * Anderson, G
EM: anderson@unavco.org
AU: Hodgkinson, K
EM: hodgkinson@unavco.org
AU: Jackson, M
EM: jackson@unavco.org
AU: Wright, J
EM: wright@unavco.org
AB: The Plate Boundary Observatory (PBO), part of the NSF-funded EarthScope project, is designed to study the three-dimensional strain field resulting from deformation across the active boundary zone between the Pacific and North American plates in the western United States. To meet these goals, PBO will install 891 continuous GPS stations, up to 174 borehole strainmeter stations, and five laser strainmeters, over the next five years. In addition, 209 previously existing continuous GPS stations will be incorporated into PBO through the PBO Nucleus project, and there will be a pool of 100 portable GPS receivers available for survey-mode observations. To date, 209 PBO GPS stations have been installed, of which 182 have returned data. In addition, PBO now handles data flow for 29 PBO Nucleus stations. Most of these stations return data to the PBO data center in Boulder on a daily basis. These data are then processed by the PBO GPS Analysis Centers, at Central Washington University and the University of California, Berkeley, and the PBO GPS Analysis Center Coordinator at MIT. These groups create a range of GPS products, including station position time series, GPS velocity vectors, and related information. At present, these centers are processing data on a daily basis from about 300 stations; typical position uncertainties are approximately 1.5 mm horizontally and 4 mm vertically, both of which will improve as more data are analyzed. All PBO GPS data products are archived at and available from the UNAVCO Facility, with a second archive under development at the IRIS Data Management Center. PBO now has six borehole strainmeters and one laser strainmeter installed, with data returned at least once per day, and PBO handles data flow for a previously installed laser strainmeter as well. These data are analyzed on a daily basis by the Borehole Strainmeter Data Analysis Center in Socorro, New Mexico, and the Laser Strainmeter Data Analysis Center at the University of California, San Diego. These groups transform the raw strainmeter observations into cleaned individual strain gauge components; time series of shear, areal, and linear strain; and related products. All strainmeter data products are archived at and available from the Northern California Earthquake Data Center and the IRIS DMC.
DE: 1200 GEODESY AND GRAVITY
DE: 1209 Tectonic deformation (6924)
DE: 1240 Satellite geodesy: results (6929, 7215, 7230, 7240)
DE: 1241 Satellite geodesy: technical issues (6994, 7969)
DE: 1294 Instruments and techniques
SC: Geodesy [G]
MN: Fall Meeting 2005