Seismic monitoring at the Geysers Geothermal Field, California, Menlo Park, 1978
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 reigon. Earthquakes in the steam production zone at The Geysers resemmble 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.
- Research Organization:
- Geological Survey, Washington, DC (USA)
- OSTI ID:
- 6417148
- Report Number(s):
- TID-29413
- Country of Publication:
- United States
- Language:
- English
Similar Records
Seismic velocity structure and microearthquake source properties at The Geysers, California, geothermal area
Progressive inversion for hypocenters and P wave and S wave velocity structure: Application to The Geysers, California, geothermal field
Related Subjects
150201* -- Geology & Hydrology of Geothermal Systems-- USA-- (-1989)
150301 -- Geothermal Exploration & Exploration Technology-- Geophysical Techniques & Surveys
CALIFORNIA
EARTHQUAKES
GEOPHYSICAL SURVEYS
GEOTHERMAL FIELDS
GEYSERS GEOTHERMAL FIELD
Geothermal Legacy
MICROEARTHQUAKES
NORTH AMERICA
SEISMIC EVENTS
SEISMIC SURVEYS
SEISMICITY
USA
WESTERN REGION