Method for identifying anomalous terrestrial heat flows

Details Method for identifying anomalous terrestrial heat flows Method for identifying anomalous terrestrial heat flows

1976-01-05

1977-01-25

Willis, Davis L.

Radiant energy

Geological testing or irradiation

250339, G01V 500

Patent

active

040052893

ABSTRACT:
A method for locating and mapping the magnitude and extent of terrestrial heat-flow anomalies from 5 to 50 times average with a tenfold improved sensitivity over orthodox applications of aerial temperature-sensing surveys as used for geothermal reconnaissance. The method remotely senses surface temperature anomalies such as occur from geothermal resources or oxidizing ore bodies by: measuring the spectral, spatial, statistical, thermal, and temporal features characterizing infrared radiation emitted by natural terrestrial surfaces; deriving from these measurements the true surface temperature with uncertainties as small as 0.05 to 0.5 K; removing effects related to natural temperature variations of topographic, hydrologic, or meteoric origin, the surface composition, detector noise, and atmospheric conditions; factoring out the ambient normal-surface temperature for non-thermally enhanced areas surveyed under otherwise identical environmental conditions; distinguishing significant residual temperature enhancements characteristic of anomalous heat flows and mapping the extent and magnitude of anomalous heat flows where they occur.

REFERENCES:
patent: 3278746 (1966-10-01), Fiat
patent: 3373281 (1968-03-01), McAlister

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