Published April 1968
| Published
Journal Article
Open
Parkfield earthquake of June 28, 1966: Magnitude and source mechanism
- Creators
-
Wu, Francis T.
Abstract
The Parkfield earthquake of June 28, 1966 (04:26:12.4 GMT) is studied using short-period and long-period teleseismic records. It is found that (1) Mb = 5.8 and Ms = 6.4 as compared to Mb = 5.4 and Ms = 5.4 for the foreshock (04:08:54), (2) both the Rayleigh and Love wave radiation patterns conform to those of a double couple at a depth of about 8.6 km, (3) the main shock can be represented by a series of shocks separated in space and time. The near-field strong-motion data support the last conclusion. Based on strong-motion seismograms, and the surficial evidences of the dimensions of the fault, the energy is found to be 10^(21) ergs.
Additional Information
Copyright © 1968, by the Seismological Society of America. Manuscript received October 25, 1967. The author wishes to thank Professor James N. Brune for stimulating discussions. This research was supported by the Air Force Office of Scientific Research, Office of Aerospace Research, United States Air Force, under AFOSI% contract AF-49 (638)-1337.Attached Files
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Additional details
- Eprint ID
- 47838
- Resolver ID
- CaltechAUTHORS:20140801-151448195
- AF-49 (638)-1337
- Air Force Office of Scientific Research (AFOSR)
- Created
-
2014-08-01Created from EPrint's datestamp field
- Updated
-
2020-03-09Created from EPrint's last_modified field
- Other Numbering System Name
- Caltech Division of Geological Sciences
- Other Numbering System Identifier
- 1493