The measurement of the flow of heat through the crust of the earth and through rocks
Methods of rapidly measuring the temperature gradient in and the thermal conductivity of the rocks in the upper part of the crust of the earth are described A thermistor is used to indicate temperatures in boreholes to within 0. 02 degree C. It has been found possible to detect and locate to within one or two feet the base of porous ;strata through which water is flowing into the borehole. A steady state apparatus has been constructed hich, within 10 minutes, gives values of the thermal...[Show more]
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