thumbnail

Principal component analysis of geodetically measured deformation in Long Valley caldera, eastern California, 1983-1987

Journal of Geophysical Research

By:

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time

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

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Principal component analysis of geodetically measured deformation in Long Valley caldera, eastern California, 1983-1987
Series title:
Journal of Geophysical Research
Volume
93
Issue:
B11
Year Published:
1988
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article