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The Potential for Earthquake Early Warning in Southern California

Allen, Richard M. and Kanamori, Hiroo (2003) The Potential for Earthquake Early Warning in Southern California. Science, 300 (5620). pp. 786-789. ISSN 0036-8075. doi:10.1126/science.1080912.

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Earthquake mitigation efforts in the United States currently use long-term probabilistic hazard assessments and rapid post-earthquake notification to reduce the potential damage of earthquakes. Here we present the seismological design for and demonstrate the feasibility of a short-term hazard warning system. Using data from past earthquakes, we show that our Earthquake Alarm System (ElarmS) could, with current TriNet instrumentation, issue a warning a few to tens of seconds ahead of damaging ground motion. The system uses the frequency content of the P-wave arrival to determine earthquake magnitude, an approach that allows magnitude determination before any damaging ground motion occurs.

Item Type:Article
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URLURL TypeDescription DOIArticle
Kanamori, Hiroo0000-0001-8219-9428
Additional Information:© 2003 American Association for the Advancement of Science. Received 27 November 2002; accepted 25 March 2003. We thank Y. Nakamura of Systems and Data Research Company, Japan, for discussions regarding UrEDAS, the Japanese earthquake early warning system; E. Hauksson and P. Small, both at the California Institute of Technology (Caltech), for their participation in discussions of the technical capabilities of TriNet; and two anonymous reviewers for their comments on this manuscript. Supported by the Seismological Laboratory at Caltech and the Graduate School of the University of Wisconsin-Madison.
Funding AgencyGrant Number
Caltech Seismological LaboratoryUNSPECIFIED
University of Wisconsin MadisonUNSPECIFIED
Issue or Number:5620
Record Number:CaltechAUTHORS:20141110-145341764
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51530
Deposited By: Tony Diaz
Deposited On:11 Nov 2014 00:21
Last Modified:10 Nov 2021 19:12

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