U.S. Geological Survey General Earthquake Observation System National Strong Motion Program

1990 Upland GEOS Data

This site contains earthquake and aftershock data collected by the United States Geological Survey (USGS) General Earthquake Observation System (GEOS) project in Menlo Park, California.

The binary data are available via anonymous FTP from the National Strong Ground Motion FTP-server: https://ca.water.usgs.gov/nsmp/ in directory GEOS/UPL.

Tables

Station list
Ordered arrival list
Trigger table for 2 or more triggers

For information on these recordings refer to USGS Open-File Report 91-47: Waveform Data from Aftershocks of the 1990 Upland, California, Earthquake Recorded on a Small Aperature Seismic Array; by Jim Mori and Christopher Dietel; 47 pages.

U.S. Department of the Interior
The USGS Home Page is at http://www.usgs.gov
The USGS Geologic Division Home Page is at http://geology.usgs.gov
The USGS National Strong Motion Program Home Page is at http://earthquake.usgs.gov/monitoring/nsmp

The GEOS Home Page is at /GEOS/geos.html
The URL of this page is /GEOS/UPL/upland.html
e-mail: glassmoyer@usgs.gov
or address:
Gary Glassmoyer
345 Middlefield Road M/S 977
Menlo Park, California 94025