TriNet "ShakeMaps": Rapid Generation of Peak Ground Motion and Intensity Maps for Earthquakes in Southern California
Abstract
Rapid (3-5 minutes) generation of maps of ground motion shaking and intensity is accomplished with advances in real-time seismographic data acquisition combined with newly-developed relationships between recorded ground motion parameters and expected shaking intensity values. Estimation of shaking over the entire regional extent of southern California is accomplished by spatial interpolation of the measured ground motions with geologically-based, frequency and amplitude-dependent site corrections. Production of the maps is automatic, triggered by any significant earthquake in southern California. Maps are now made available within several minutes of the earthquake for public and scientific consumption via the World-Wide-Web; they will be made available with dedicated communications for emergency response agencies and critical users.
Additional Information
© 1999 Earthquake Spectra. Conversations with K. Campbell, R. Nigbor, and M. Petersen were very helpful. S. Park provided his QTM geology maps in digital form. Reviews by K. Campbell, M. Trifunac, R. Graves, and N. Field improved this manuscript, as did recommendations of Editorial Board Member P. Somerville. All the participants in TriNet played a critical role in this work, most notably D. Given, E. Hauksson, P. Maechling, and A. Shakal. Maps were made with Generic Mapping Tools (GMT, Wessel and Smith, 1991). Seismological Laboratory Contribution Number 8582. TriNet is funded by the OES/FEMA Hazard Mitigation Grant Program, Grant No. FEMA-1008-DR-CA, HMGP NO.003, FIPS No.037-90027; the USGS, the CDMG, the Calif. Trade and Commerce Agency, the Calif. Technology Investment Partnership Program; and private sector contributions.Attached Files
Published - WALes99b.pdf
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Additional details
- Eprint ID
- 28537
- Resolver ID
- CaltechAUTHORS:20111220-112252129
- FEMA-1008-DR-CA
- Federal Emergency Management Agency (FEMA)
- HMGP NO.003
- Federal Emergency Management Agency (FEMA)
- FIPS No.037-90027
- Federal Emergency Management Agency (FEMA)
- USGS
- California Division of Mines and Geology
- California Trade and Commerce Agency
- California Technology Investment Partnership Program
- California Office of Emergency Services
- Created
-
2011-12-20Created from EPrint's datestamp field
- Updated
-
2021-11-09Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences
- Other Numbering System Name
- Caltech Seismological Laboratory Contribution
- Other Numbering System Identifier
- 8582