Global Positioning System Data, Southern California Earthquake Center

Global Positioning System data archived at the Southern California Earthquake Center (SCEC) Data Center were collected due to the collaborative efforts of the SCEC office, USGS, and other organizations in order to provide comprehensive GPS measurements for earthquake analysis. These data are available on-line through the SCEC Data Center World Wide Web server at: "scign.org/" The data are archived in RINEX format and are available for the following time periods and locations: 1991 San Bernardino County Survey Post Landers Data (July 1 - July 25, 1992) 1994 SCEC GPS files - July 1 to present 1994 NGS GPS data A full index of site locations is also available.

The following information about the GPS data sets was extracted from the UCLA SCEC FTP site: Archive Contents The GPS data archive consists of four parts: The raw and RINEX format GPS data, the site descriptions and log sheets that go with these data, the indexes to the data and the sites, and solution files from the processed data. Data Archive Structure GPS data that has been RINEXED and checked for major quality problems is kept on-line at the SCEC data center.