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Title: Statistical study of seismicity associated with geothermal reservoirs in California

Technical Report ·
DOI:https://doi.org/10.2172/5456535· OSTI ID:5456535

Statistical methods are outlined to separate spatially, temporally, and magnitude-dependent portions of both the random and non-random components of the seismicity. The methodology employed compares the seismicity distributions with a generalized Poisson distribution. Temporally related events are identified by the distribution of the interoccurrence times. The regions studied to date include the Imperial Valley, Coso, The Geysers, Lassen, and the San Jacinto fault. The spatial characteristics of the random and clustered components of the seismicity are diffuse and appear unsuitable for defining the areal extent of the reservoir. However, from the temporal characteristics of the seismicity associated with these regions a general discriminant was constructed that combines several physical parameters for identifying the presence of a geothermal system.

Research Organization:
Sierra Geophysics, Inc., Arcadia, CA (USA)
OSTI ID:
5456535
Report Number(s):
USGS-OFR-82-1068; ON: DE84900465
Country of Publication:
United States
Language:
English