Physics – Geophysics
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....9713379t&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. E8, Aug. 25, 1992, p. 13,379-13,394. Research supported by JPL.
Physics
Geophysics
24
Physical Properties, Radar Echoes, Reflected Waves, Surface Properties, Venus Surface, Backscattering, Geophysics, Radar Measurement, Radar Scattering, Thermal Emission
Scientific paper
Procedures developed from Hagfors' (1964) scattering model have been used with success to extract various properties (reflectivity, emissivity, slope, etc.) from both Pioneer Venus and Magellan data. However, under certain circumstances, such as physically rough areas or areas of nonhomogeneous composition, Hagfors' model may lead to serious errors in the interpretation of radar and radiometry data. The Magellan-derived surface properties are examined for some areas of below average emissivity in Alpha Regio and in an area to the east of Alpha, Crater Stuart, in order to determine if Hagfors' model is applicable. Methods of classical multiple scattering theory are also applied to show that enhanced radar backscattering and depressed thermal emission can be expected with a matrix of silicic or mafic rocks embedded in low loss soils.
Muhleman Duane O.
Tryka Kimberly A.
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