Actions for A C-band backscatter model for lake ice in Alaska

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A C-band backscatter model for lake ice in Alaska

Author
Wakabayashi, H.
Published
Aug 1, 1993.
Physical Description
1 electronic document
Additional Creators
Weeks, W. F. and Jeffries, M. O.
Online Version

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Unclassified, Unlimited, Publicly available.
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Summary
ERS-1 SAR imagery of lake ice growing on shallow tundra lakes in northern Alaska shows interesting radar backscatter variations. Based on the analysis of ice cores from these lakes, a multi-layer backscatter model comprised of the following elements has been developed: (1) specular air-ice; ice-water and ice-frozen soil boundaries; (2) an ice layer of variable thickness; (3) ice sub-layers with air inclusions of variable density, size and shape including spheres, prolate spheroids, and cylinders of finite length. Preliminary model results confirm that backscatter is a sensitive function of greater reflectivity than from an ice-frozen soil interface. The model has also been tested using bubble data derived from ice cores in April 1992. The modelled backscatter is compared with backscatter derived from ERS-1 SAR images obtained at the same time as the fieldwork.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19960007130.
Accession ID: 96N14295.
NAS 1.26:199628.
IEEE-93CH3294-6.
LC-93-77594.
NIPS-95-05487.
NASA-CR-199628.
1993 International Geoscience and Remote Sensing Symposium (IGARSS 1993). Better Understanding of Earth Environment, Volume 3; 18-21 Aug. 1993; Tokyo; Japan.
Terms of Use and Reproduction
No Copyright.
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