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An instrument for measuring thermal inertia in the fieldFeatures and test results of a thermal inertial meter (TIM) for cataloging the thermal inertial of surface material in situ as a basis for satellite remote sensing of geologic materials are described. The instrument is employed to determine the temperature rise of the materials in the field, with the assumptions that the sample and a standard are homogeneous in composition, the heat flux density is constant at the surface of each material, and the specimens are thick enough to be treated as semi-infinite bodies. A formula for calculating thermal inertia is presented, and the components of the TIM are detailed. A box with three compartments, two holding standards, is placed on the sample surface with the third compartment open to the specimen. Dolomite and quartz are used as references when all samples are measured after heating. Tests with rocks and sand in Nevada and California revealed that chert has a higher thermal inertia than barite.
Document ID
19820045794
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Marsh, S. E.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Schieldge, J. P.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Kahle, A. B.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Date Acquired
August 10, 2013
Publication Date
April 1, 1982
Publication Information
Publication: Photogrammetric Engineering and Remote Sensing
Volume: 48
Subject Category
Instrumentation And Photography
Accession Number
82A29329
Distribution Limits
Public
Copyright
Other

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