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Global Positioning System data collection, processing, and analysis conducted by the U.S. Geological Survey earthquake hazards program

Jessica R. Murray and Jerry Svarc
Global Positioning System data collection, processing, and analysis conducted by the U.S. Geological Survey earthquake hazards program
Seismological Research Letters (May 2017) 88 (3): 916-925

Abstract

The U.S. Geological Survey Earthquake Science Center collects and processes Global Positioning System (GPS) data throughout the western United States to measure crustal deformation related to earthquakes and tectonic processes as part of a long-term program of research and monitoring. Here, we outline data collection procedures and present the GPS dataset built through repeated temporary deployments since 1992. This dataset consists of observations at approximately 1950 locations. In addition, this article details our data processing and analysis procedures, which consist of the following. We process the raw data collected through temporary deployments, in addition to data from continuously operating western U.S. GPS stations operated by multiple agencies, using the GIPSY software package to obtain position time series. Subsequently, we align the positions to a common reference frame, determine the optimal parameters for a temporally correlated noise model, and apply this noise model when carrying out time-series analysis to derive deformation measures, including constant interseismic velocities, coseismic offsets, and transient postseismic motion.


ISSN: 0895-0695
EISSN: 1938-2057
Serial Title: Seismological Research Letters
Serial Volume: 88
Serial Issue: 3
Title: Global Positioning System data collection, processing, and analysis conducted by the U.S. Geological Survey earthquake hazards program
Affiliation: U. S. Geological Survey, Menlo Park, CA, United States
Pages: 916-925
Published: 201705
Text Language: English
Publisher: Seismological Society of America, El Cerrito, CA, United States
References: 29
Accession Number: 2017-082514
Categories: Seismology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sketch maps
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Seismological Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201743
Program Name: USGSOPNon-USGS publications with USGS authors
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