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Seismicity of Southern California: Earthquakes of ML 3.0 and Greater, 1975 through 1983

Hutton, L. K. and Allen, C. R. and Johnson, C. E. (1985) Seismicity of Southern California: Earthquakes of ML 3.0 and Greater, 1975 through 1983. Division of Geological and Planetary Sciences Contribution, 4207. California Institute of Technology , Pasadena, CA.

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The time period since the last published California Institute of Technology (CIT) earthquake catalog (Hileman 1974; Friedman 1976) has seen many changes in data analysis and reporting procedures at the Seismological Laboratory. CIT merged its operation with the U.S. Geological Survey (USGS) during this period. Digital recording (Johnson 1979) was introduced in 1977 and computer systems improved several times since. The seismic network itself expanded from 125 stations in 1975 to more than 200 in early 1983 (Figure 1). The result is an agglomeration of data that way take a superhuman effort to sort through. Much use can be made, however, of a timely earthquake catalog which is restricted to the larger earthquakes. We therefore present as complete and reliable a list of events of ML 3.0 and greater as possible, comprising 3,650 individual earthquakes.

Item Type:Report or Paper (Report)
Additional Information:Published 1985 by the Seismological Laboratory, California Institute of Technology, Pasadena, California 91125, with assistance from the Earthquake Research Affiliates.
Group:Seismological Laboratory
Funding AgencyGrant Number
Caltech Earthquake Research AffiliatesUNSPECIFIED
Series Name:Division of Geological and Planetary Sciences Contribution
Issue or Number:4207
Record Number:CaltechAUTHORS:20150305-102736725
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:55538
Deposited By: Tony Diaz
Deposited On:05 Mar 2015 22:16
Last Modified:03 Oct 2019 08:06

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