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Title: Method for identifying anomalous terrestrial heat flows

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.

Inventors:
 [1]
  1. San Leandro, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
862754
Patent Number(s):
4005289
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; identifying; anomalous; terrestrial; heat; flows; locating; mapping; magnitude; extent; heat-flow; anomalies; 50; times; average; tenfold; improved; sensitivity; orthodox; applications; aerial; temperature-sensing; surveys; geothermal; reconnaissance; remotely; senses; surface; temperature; occur; resources; oxidizing; bodies; measuring; spectral; spatial; statistical; thermal; temporal; features; characterizing; infrared; radiation; emitted; natural; surfaces; deriving; measurements; true; uncertainties; 05; removing; effects; related; variations; topographic; hydrologic; meteoric; origin; composition; detector; noise; atmospheric; conditions; factoring; ambient; normal-surface; non-thermally; enhanced; surveyed; otherwise; identical; environmental; distinguishing; significant; residual; enhancements; characteristic; improved sensitivity; temperature variations; heat flow; infrared radiation; radiation emitted; environmental conditions; surface temperature; temperature variation; heat flows; atmospheric conditions; thermally enhanced; terrestrial heat; /250/

Citation Formats

Del Grande, Nancy Kerr. Method for identifying anomalous terrestrial heat flows. United States: N. p., 1977. Web.
Del Grande, Nancy Kerr. Method for identifying anomalous terrestrial heat flows. United States.
Del Grande, Nancy Kerr. Tue . "Method for identifying anomalous terrestrial heat flows". United States. https://www.osti.gov/servlets/purl/862754.
@article{osti_862754,
title = {Method for identifying anomalous terrestrial heat flows},
author = {Del Grande, Nancy Kerr},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {1}
}

Patent:

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