| Abstract: | Observations of deformation from 1992 to 1997 in the southern Coso Range using satellite radar interferometry show deformation rates of up to 35 mm yr-1 in an area ???10 km by 15 km. The deformation is most likely the result of subsidence in an area around the Coso geothermal field. The deformation signal has a short-wavelength component, related to production in the field, and a long-wavelength component, deforming at a constant rate, that may represent a source of deformation deeper than the geothermal reservoir. We have modeled the long-wavelength component of deformation and inferred a deformation source at ???4 km depth. The source depth is near the brittle-ductile transition depth (inferred from seismicity) and ???1.5 km above the top of the rhyolite magma body that was a source for the most recent volcanic eruption in the Coso volcanic field [Manley and Bacon, 2000]. From this evidence and results of other studies in the Coso Range, we interpret the source to be a leaking deep reservoir of magmatic fluids derived from a crystallizing rhyolite magma body. |
| Genre: | Article |
| ProdID: | 70023331 |
| Citation Author: | Wicks, C. W.; Thatcher, W.; Monastero, F. C.; Hasting, M. A. |
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| Citation End Page: | 13780 |
| Citation Issue: | B7 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Geophysical Research B: Solid Earth |
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| Citation Number Of Pages: | 12 |
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| Citation Search Results Text: | Steady state deformation of the Coso Range, east central California, inferred from satellite radar interferometry; 2001; Article; Journal; Journal of Geophysical Research B: Solid Earth; Wicks, C. W.; Thatcher, W.; Monastero, F. C.; Hasting, M. A. |
| Citation Start Page: | 13769 |
| Citation Volume: | 106 |
| Citation Year: | 2001 |
| Type: | citation/reference |
| Text: | Steady state deformation of the Coso Range, east central California, inferred from satellite radar interferometry; 2001; Article; Journal; Journal of Geophysical Research B: Solid Earth; Wicks, C. W.; Thatcher, W.; Monastero, F. C.; Hasting, M. A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Mon, 1 Jan 2001 00:00 -0600 |
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