Physics
Scientific paper
Jul 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976phdt........55a&link_type=abstract
Ph.D. Thesis Ohio State Univ., Columbus.
Physics
Ice Formation, Ice Mapping, Microwave Radiometers, Temperature Gradients, Atmospherics, Data Processing, Lake Ice, Transition Layers
Scientific paper
The basic calculations from which the feasibility of a scanning microwave radiometer system for mapping the thickness of lake ice may be evaluated are presented. An analytical model for the apparent brightness temperature as a function of ice thickness was developed, and elaborated to include such variables as galactic and atmospheric noise, aspect angle, polarization, temperature gradient in the ice, the presence of transition layers such as snow, slush, and water, increased loss due to air inclusions in the ice layer, and the presence of multiple ice thicknesses within the antenna footprint. It was found that brightness temperature measurements at six or seven frequencies in the range of 0.4 to 0.7 GHz were required to obtain unambiguous thickness estimates. A number of data processing methods were examined.
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