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Proceedings Paper

Remote spectral identification of surface aggregates by thermal imaging techniques: progress report
Author(s): Douglas E. Scholen; William H. Clerke; Gregory S. Burns
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Paper Abstract

The NASA thermal infrared multispectral scanner (TIMS) has been successfully used for the remote identification of a variety of soil and aggregate deposits in vegetated areas of two states. Over three million cubic meters of gravel deposits were identified from the imagery during a two-year period. Verification was accomplished by ground reconnaissance using drilling machinery provided by the United States Forest Service (USFS), and by ground instrumentation provided by NASA''s Science and Technology Lab. (STL). The method has been used to differentiate between fine- and coarse-grained soils, and gravel deposits. The deposits were found to have been naturally sorted according to grain size by depositional processes, providing each deposit with distinct spectral qualities. It was found that the masking effects of relatively dense vegetation were largely overcome by using imagery acquired at higher altitudes above terrain than 9000 m, due to loss of resolution of the finer detail. The mechanics of image resolution are discussed, a method of data analysis is described, and sample spectral signatures are illustrated.

Paper Details

Date Published: 1 September 1991
PDF: 12 pages
Proc. SPIE 1492, Earth and Atmospheric Remote Sensing, (1 September 1991); doi: 10.1117/12.45864
Show Author Affiliations
Douglas E. Scholen, USDA Forest Service (United States)
William H. Clerke, USDA Forest Service (United States)
Gregory S. Burns, NASA/John C. Stennis Space Ctr. (United States)

Published in SPIE Proceedings Vol. 1492:
Earth and Atmospheric Remote Sensing
Robert J. Curran; James Alan Smith; Ken Watson, Editor(s)

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