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Detailed Reference Information |
Julian, B.R., Ross, A., Foulger, G.R. and Evans, J.R. (1996). Three-dimensional seismic image of a geothermal reservoir: The Geysers, California. Geophysical Research Letters 23: doi: 10.1029/95GL03321. issn: 0094-8276. |
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Three-dimensional seismic travel-time tomography of The Geysers geothermal area, in the coast ranges of northern California, shows a strong (-9%) anomaly in VP/VS, the ratio of the compressional and shear wave speeds, that is not evident in VP alone and corresponds closely to the most intensively exploited part of the geothermal reservoir. This anomaly probably indicates low pore pressure and relatively dry conditions, caused partly by boiling of pore water as steam is extracted. Steam pressure decreases over the last decade have probably caused seismologically measurable changes in wave speeds. Tomographic measurement of VP/VS is a promising technique both for identifying geothermal resources and for monitoring them during exploitation. ¿ American Geophysical Union 1996 |
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Abstract |
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Keywords
Volcanology, Hydrothermal systems, Seismology, Continental crust, Seismology, Instruments and techniques |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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