Thermal Gradient Holes At Coso Geothermal Area (1974)

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Exploration Activity: Thermal Gradient Holes At Coso Geothermal Area (1974)

Exploration Activity Details
Location Coso Geothermal Area
Exploration Technique Thermal Gradient Holes
Activity Date 1974

Usefulness useful
DOE-funding Unknown

Exploration Basis
Use heat flow studies for the first time at Coso to indicate the presence or absence of abnormal heat
Located 10 sites for heat flow boreholes using available seismic ground noise and electrical resistivity data; data collected from 9 of 10; thermal conductivity measurements were completed using both the needle probe technique and the divided bar apparatus with a cell arrangement. In the upper few hundred meters of the subsurface heat is being transferred by a conductive heat transfer mechanism with a value of ~ 15 µcal/cm2sec; the background heat flow is ~ 3.5 HFU.

Additional References