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Modelling changes in the dielectric and scattering properties of young snow-covered sea ice at GHz frequenciesObservations of the physical properties of the snow cover and underlying young fast ice in Resolute Passage, Canada, were made during the winter of 1982. Detailed measurements of snow density and ice and snow temperatures, salinities, and brine volumes were made over a period of 46 d, beginning when the ice was 0.4 m thick and about 9 d old. The recorded values are used in a theoretical mixture model to predict the dielectric properties of the snow cover over the microwave frequency range. The results of this analysis are then used to investigate the effects of the snow properties on the radar backscatter signatures of young sea ice. The results show that backscatter is a function of the incidence angle and can change significantly over short periods of time during the early evolutionary phase of ice and snow-cover development. This has important consequences for the identification of young ice forms from SAR or SLAR images.
Document ID
19890064819
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Drinkwater, Mark R.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena; Cambridge, University United Kingdom)
Crocker, G. B.
(Cambridge, University United Kingdom)
Date Acquired
August 14, 2013
Publication Date
January 1, 1988
Publication Information
Publication: Journal of Glaciology
Volume: 34
Issue: 118,
ISSN: 0022-1430
Subject Category
Oceanography
Accession Number
89A52190
Distribution Limits
Public
Copyright
Other

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