Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.3037b&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 90, March 10, 1985, p. 3037-3047.
Astronomy and Astrophysics
Astronomy
17
Planetary Craters, Radar Astronomy, Venus Radar Echoes, Venus Surface, Geomorphology, Polarization Characteristics, Space Observations (From Earth), Volcanoes, Venus, Radar Observations, Craters, Cratering, Surface, Features, Earth-Based Observations, Imagery, Origin, Formation, Morphology, Polarization, Characteristics, Impacts, Volcanism, Comparisons
Scientific paper
To date many crater-like features have been detected in earth-based radar and Pioneer-Venus imagery of the surface of Venus, but whether they are of impact or endogenic origin is still in question. The morphologic and polarization characteristics of these features, as observed from earth-based radar data obtained at the Arecibo Observatory, provide additional information that may be useful in their identification. This paper examines the extent to which this information can be used, in conjunction with the knowledge of the morphologic and polarization properties of impact craters and volcanic calderas on other terrestrial bodies, to constrain inferences about the origin of the crater-like features on Venus. Results indicate that only two features exhibit unambiguous characteristics that could tentatively distinguish them as volcanic or impact in origin. However, the observed trends imply that any age of the surface derived from observed crater densities must represent an upper bound on the actual age.
Burns Barbara Ann
Campbell Don B.
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