Crustal deformation at long Valley Caldera, eastern California, 1992-1996 inferred from satellite radar interferometry
Satellite radar interferometric images of Long Valley caldera show a pattern of surface deformation that resembles that expected from analysis of an extensive suite of ground-based geodetic data. Images from 2 and 4 year intervals respectively, are consistent with uniform movement rates determined from leveling surveys. Synthetic interferograms generated from ellipsoidal-inclusion source models based on inversion of the ground-based data show generally good agreement with the observed images. Two interferograms show evidence for a magmatic source southwest of the caldera in a region not covered by ground measurements. Poorer image quality in the 4 year interferogram indicates that temporal decorrelation of surface radar reflectors is progressively degrading the fringe pattern in the Long Valley region.
Citation Information
Publication Year | 1997 |
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Title | Crustal deformation at long Valley Caldera, eastern California, 1992-1996 inferred from satellite radar interferometry |
DOI | 10.1029/97GL02597 |
Authors | W. Thatcher, D. Massonnet |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Geophysical Research Letters |
Index ID | 70019286 |
Record Source | USGS Publications Warehouse |