Physics
Scientific paper
Jun 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983sci...220.1379f&link_type=abstract
Science (ISSN 0036-8075), vol. 220, June 24, 1983, p. 1379-1381. NASA-supported research.
Physics
24
Radio Emission, Thermal Emission, Venus Radar Echoes, Venus Surface, Brightness Temperature, Centimeter Waves, Pyrites
Scientific paper
Observations of thermal radio emission from the surface of Venus, made by the Pioneer Venus radar mapper at a wavelength of 17 centimeters, show variations that are dominated by changes in surface emissivity. The regions of lowest emissivity (0.54 ± 0.05 for the highland areas of Aphrodite Terra and Theia Mons) correspond closely to regions of high radar reflectivity reported earlier. These results support the inference of inclusions of material with high electrical conductivity in the surface rock of these areas.
Ford Peter G.
Pettengill Gordon H.
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