Numerical Modeling At Coso Geothermal Area (1999)

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Exploration Activity: Numerical Modeling At Coso Geothermal Area (1999)

Exploration Activity Details
Location Coso Geothermal Area
Exploration Technique Numerical Modeling
Activity Date 1999

Usefulness not indicated
DOE-funding Unknown

Exploration Basis
To determine three-dimensional P and S waves velocity structures
High precision P and S wave travel times for 2104 microearthquakes with focus <6 km are used in a non-linear inversion to derive high-resolution 3-D compressional and shear velocity structures at the Coso Geothermal Area. Block size for the inversion is 0.2 km horizontally and 0.5 km vertically and inversions are investigated in the upper 5 km of the geothermal area. Spatial resolution, calculated by synthetic modeling of a cross model at critical locations, is estimated to be 0.35 km for Vp and 0.5 km for V s . In the 2 km southwest Sugarloaf region, we found low V p and high V s at geothermal production depths from 1 to 2.5 km. Combined with attenuation results, this may represent a hot, fluid-depleted center of magmatic activity.

Additional References