Mathematics – Logic
Scientific paper
Feb 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982s%26t....63..134b&link_type=abstract
Sky and Telescope, vol. 63, Feb. 1982, p. 134-138.
Mathematics
Logic
Pioneer Venus Spacecraft, Radar Imagery, Topography, Venera Satellites, Venus Atmosphere, Venus Surface, Atmospheric Composition, Gravity Anomalies, Pioneer Venus 1 Spacecraft, Radar Maps, Subduction (Geology), Volcanoes, Hypotheses, Electromagnetic Properties, Lightning, Composition, Pressure, Greenhouse, Volatile Elements, Venus, Topography, Imagery, Radioactivity, Comparisons, Radar Observations, Pioneer Venus Orbiter, Volcanism, Crust, Photographs, Temperatures, Ultraviolet, Wavelengths, Maps, Pvo, Popu
Scientific paper
Topics and discussion at the International Conference on the Venus Environment in Nov. 1981, dealing with data from the Pioneer Venus orbiter, five Pioneer probes, and four Venera spacecraft, are examined. The orbital radar maps have revealed an absence of oceanic ridges, of subduction trenches, and the presence of a topography similar to earth's. The possibility of active volcanoes at Beta Reggio, Aphrodite Terra, and Maxwell Montes is suggested by the similar sizes of the earth and Venus, the heights of some of the surface topography, satellite-detected gravitational anomalies, radar images that look like volcanoes, and the clustering of lightning patches over suspected volcanic areas. Finally, the presence of an enhanced deuterium concentration in the Venus atmosphere has been taken as evidence that a hydrogen migration away from Venus from dissociated water occurred in Venus' geologic past.
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