Use of Long-Period Seismic Waves for Rapid Evaluation of Tsunami Potential of Large Earthquakes
- Creators
-
Kanamori, Hiroo
- Given, Jeffrey W.
- Others:
- Iida, Kumiji
- Iwasaki, T.
Abstract
Two seismological methods for rapid evaluation of tsunami potential of an earthquake are discussed. In the first method, long-period (200 to 300 sec) surface waves are used to determine the seismic moment and the fault geometry. This method allows determination of the source parameters in about 10 minutes after the surface-wave data have been retrieved, and is appropriate for far-field tsunami warning purposes. In the second method, long-period (100 to 300sec) near-field displacements are used to estimate the seismic moment. Our numerical experiment for a source-station geometry appropriate for Japan demonstrates that a very rapid and robust method can be developed for near-field tsunami warning purposes, if an appropriate (long-period, low gain) recording system is available.
Additional Information
© 1983 by Terra Scientific Publishing Company (TERRAPUB), Tokyo. Received March 6, 1982. This research was supported by the U.S. Geological Survey contract No. 14-08-0001-19755. Contribution No. 3756, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125.Additional details
- Eprint ID
- 51272
- Resolver ID
- CaltechAUTHORS:20141105-085506324
- USGS
- 14-08-0001-19755
- Created
-
2014-11-05Created from EPrint's datestamp field
- Updated
-
2020-03-09Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences (GPS)
- Series Name
- Advances in earth and planetary sciences
- Series Volume or Issue Number
- 17
- Other Numbering System Name
- Caltech Division of Geological and Planetary Sciences
- Other Numbering System Identifier
- 3756