| Abstract: | Residuals for P-wave traveltimes at a seismograph station near Bear Valley, California, for small, precisely located local earthquakes at distances of 20 to 70 kilometers show a sharp increase of nearly 0.3 second about 2 months before a magnitude 5.0 earthquake that occurred within a few kilometers of the station. This indicates that velocity changes observed elsewhere premonitory to earthquakes, possibly related to dilatancy, occur along the central section of the San Andreas fault system. |
| Genre: | Article |
| ProdID: | 70011057 |
| Citation Author: | Robinson, R.; Wesson, R. L.; Ellsworth, W. L. |
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| Citation End Page: | 1283 |
| Citation Issue: | 4143 |
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| Citation Language: | English |
| Citation Larger Work Title: | Science |
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| Citation Number Of Pages: | 3 |
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| Citation Search Results Text: | Variation of P-wave velocity before the Bear Valley, California, earthquake of 24 February 1972; 1974; Article; Journal; Science; Robinson, R.; Wesson, R. L.; Ellsworth, W. L. |
| Citation Start Page: | 1281 |
| Citation Volume: | 184 |
| Citation Year: | 1974 |
| Type: | citation/reference |
| Text: | Variation of P-wave velocity before the Bear Valley, California, earthquake of 24 February 1972; 1974; Article; Journal; Science; Robinson, R.; Wesson, R. L.; Ellsworth, W. L. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 1974 00:00 -0600 |
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