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Skylab floating ice experimentThe author has identified the following significant results. Coupling of the aircraft data with the ground truth observations proved to be highly successful with interesting results being obtained with IR and SLAR passive microwave techniques, and standard photography. Of particular interest were the results of the PMIS system which operated at 10.69 GHz with both vertical and horizontal polarizations. This was the first time that dual polarized images were obtained from floating ice. In both sea and lake ice, it was possible to distinguish a wide variety of thin ice types because of their large differences in brightness temperatures. It was found that the higher brightness temperature was invariably obtained in the vertically polarized mode, and as the age of the ice increases the brightness temperature increases in both polarizations. Associated with this change in age, the difference in temperature was observed as the different polarizations decreased. It appears that the horizontally polarized data is the most sensitive to variations in ice type for both fresh water and sea ice. The study also showed the great amount of information on ice surface roughness and deformation patterns that can be obtained from X-band SLAR observations.
Document ID
19760011494
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Campbell, W. J.
(Geological Survey Tacoma, WA, United States)
Ramseier, R. O.
(Dept. of the Environment Ottawa, Canada)
Weaver, R. J.
(Dept. of the Environment Ottawa, Canada)
Weeks, W. F.
(Army Cold Regions Res. and Engr. Lab. Hanover, N. H., United States)
Date Acquired
September 3, 2013
Publication Date
December 1, 1975
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NASA-CR-147446
E76-10161
Accession Number
76N18582
Funding Number(s)
CONTRACT_GRANT: NASA ORDER T-4111-B
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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