Seismic monitoring at the Geysers geothermal field, California
Open-File Report
78-798
By: S.M. Marks, R.S. Ludwin, K.B. Louie, and C. G. Bufe
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Abstract
Two distinct clusters of microearthquakes have been identified at The Geysers, possibly relating to two independent pressure sinks resulting from steam production described by Lipman, and others (1977). Unlike earthquakes in the Maacama-Rodgers Creek fault zone to the south and west, earthquakes at The Geysers are confined to depths of less than 5 km. The present level of seismicity at The Geysers appears to be higher than the preproduction level and is higher and more continuous than the seismicity in the surrounding region. Earthquakes in the steam production zone at The Geysers resemble earthquakes in the surrounding region with regard to focal plane solutions, source characteristics and magnitude distribution (b slope). Subtle differences in earthquake characteristics may be resolved by analysis of more extensive data now being gathered in the region.
Suggested Citation
Marks, S., Ludwin, R., Louie, K., Bufe, C., 1978, Seismic monitoring at the Geysers geothermal field, California: U.S. Geological Survey Open-File Report 78-798, 26 leaves :ill., maps ;28 cm., https://doi.org/10.3133/ofr78798.
ISSN: 2331-1258 (online)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Seismic monitoring at the Geysers geothermal field, California |
| Series title | Open-File Report |
| Series number | 78-798 |
| DOI | 10.3133/ofr78798 |
| Year Published | 1978 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey, |
| Description | 26 leaves :ill., maps ;28 cm. |