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Global Positioning System Resurvey of Southern California Seismic Network Stations

Haase, Jennifer S. and Hauksson, Egill and Kanamori, Hiroo and Mori, Jim (1995) Global Positioning System Resurvey of Southern California Seismic Network Stations. Bulletin of the Seismological Society of America, 85 (1). pp. 361-374. ISSN 0037-1106.

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Systematic errors in travel-time data from local earthquakes can sometimes be traced to inaccuracies in the published seismic station coordinates. This prompted a resurvey of the stations of the Caltech/USGS Southern California Seismic Network (SCSN) using the Global Positioning System (GPS). We surveyed 241 stations of the SCSN using Trimble and Ashtech dual-frequency GPS receivers and calculated positions accurate to 3 m using differential positioning from carrier phase measurements. Twelve percent of the stations that were surveyed were found to be mislocated by more than 500 m. Stations of the TERRAscope and USC networks were also surveyed, as well as a network of portable seismic stations deployed shortly after the 1992 Joshua Tree and Landers earthquakes. The new coordinates and the offsets from the old coordinates are given below. The new coordinates are being used in SCSN locations as of 1 January 1994.

Item Type:Article
Related URLs:
URLURL TypeDescription
Hauksson, Egill0000-0002-6834-5051
Kanamori, Hiroo0000-0001-8219-9428
Additional Information:© 1994 Seismological Society of America. Manuscript received 19 January 1994. Funding for this project was provided through a cooperative agreement by USGS Grant Number 1434-92-A0960 and the Southern California Earthquake Center, SCEC Contribution Number 110. The GAMIT processing software was provided by MIT. Eric Calais provided basic instruction for the GAMIT software. Yehuda Bock provided the PGGA data processed by Peng Fang, and Keith Stark helped access it. Ken Hudnut, Duncan Agnew, Joann Stock, Paul Segall, Dave Jackson, Hiroo Kanamori, and Yehuda Bock loaned the GPS receivers. Gary Cone, Bob Cone, Bill Curtis, Darryl Baisley, Scott Lydeen, and Tom Heaton of the USGS and Dave Johnson at CIT helped with the field work for the SCSN. Michelle Robertson and Lanny Fields helped with the field work for the USC stations. Adam Edelman, Harold Magistrale, Aaron Martin, Mike Sleymor, and Rasool Anooshepoor helped with the field work for portable stations. Damien Sullivan helped process the GPS data.
Group:Seismological Laboratory, Division of Geological and Planetary Sciences
Funding AgencyGrant Number
Southern California Earthquake Center (SCEC)UNSPECIFIED
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Other Numbering System NameOther Numbering System ID
Southern California Earthquake Center (SCEC) 110
Issue or Number:1
Record Number:CaltechAUTHORS:20130222-080301036
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Official Citation:Jennifer S. Haase, Egill Hauksson, Hiroo Kanamori, and Jim Mori Global positioning system resurvey of Southern California Seismic Network stations Bulletin of the Seismological Society of America, February 1995, v. 85, p. 361-374
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37062
Deposited By: Ruth Sustaita
Deposited On:22 Feb 2013 21:07
Last Modified:03 Oct 2019 04:44

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