| Abstract: | Geodetic measurements of deformation at Long Valley caldera provide two examples of the application of principal component analysis. A 40-line trilateration network surrounding the caldera was surveyed in midsummer 1983, 1984, 1985, 1986, and 1987. Principal component analysis indicates that the observed deformation can be represented by a single coherent source. The time dependence for that source displays a rapid rate of deformation in 1983-1984 followed by less rapid but uniform rate in the 1984-1987 interval. The spatial factor seems consistent with expansion of a magma chamber beneath the caldera plus some shallow right-lateral slip on a vertical fault in the south moat of the caldera. An independent principal component analysis of the 1982, 1983, 1984, 1985, 1986, and 1987 leveling across the caldera requires two self-coherent sources to explain the deformation. -from Author |
| Genre: | Article |
| ProdID: | 70014321 |
| Citation Author: | Savage, J. C. |
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| Citation Issue: | B11 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Geophysical Research |
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| Citation Search Results Text: | Principal component analysis of geodetically measured deformation in Long Valley caldera, eastern California, 1983-1987; 1988; Article; Journal; Journal of Geophysical Research; Savage, J. C. |
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| Citation Volume: | 93 |
| Citation Year: | 1988 |
| Type: | citation/reference |
| Text: | Principal component analysis of geodetically measured deformation in Long Valley caldera, eastern California, 1983-1987; 1988; Article; Journal; Journal of Geophysical Research; Savage, J. C. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1988 00:00 -0600 |
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