Micro-Earthquake At Coso Geothermal Area (1987)

GEOTHERMAL ENERGY

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Exploration Activity: Micro-Earthquake At Coso Geothermal Area (1987)

Exploration Activity Details
Location	Coso Geothermal Area
Exploration Technique	Micro-Earthquake
Activity Date	1987
Usefulness	not indicated
DOE-funding	Unknown

Exploration Basis

Analysis was done to link the zones of decreased P velocity to contemporary magmatic activity

Notes

Inversion of 4036 P wave travel time residuals from 429 local earthquakes using a tomographic scheme provides information about 3D upper crustal velocity variations in the Indian Wells Valley-Coso region of southeastern CA. The residuals are calculated relative to a Coso-specific velocity model, corrected for station elevation, weighted, and back-projected along their ray paths through models defined with layers of blocks.

References

• Walck, M.C.; Clayton, R.W.   (1 January 1987) P wave velocity variations in the Coso region, California, derived from local earthquake travel times