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Using passive, thermal remote sensing techniques for detecting subsurface gravel accumulations in vegetated, unconsolidated sedimentary terrainsMultiband radiometric data from an airborne imaging thermal scanner are being studied for use in finding buried gravel deposits. The techniques are based on measuring relative differences in the thermal properties between gravel-laden targets and the surrounding gravelless background. These properties are determined from modeling the spectral radiant emittance recorded over both types of surfaces in conjunction with ground measurements of the most significant heat flows above and below the surface. Thermodynamic properties of sampled materials from control sites are determined, and diurnal and annual subsurface heat waves are recorded. Thermal models that account for heat exchange at the surface, as well as varying levels of soil moisture, humidity, and vegetation, are needed for adaptation and modification to simulate the physical and radiative environments of this region.
Document ID
19910031311
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Burns, Gregory S.
(NASA Stennis Space Center Stennis Space Center, MS, United States)
Scholen, Douglas E.
(USDA, Forest Service, Atlanta GA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1989
Subject Category
Earth Resources And Remote Sensing
Accession Number
91A15934
Distribution Limits
Public
Copyright
Other

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