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Geology of the Venus equatorial region from Pioneer Venus radar imagingThe data collected by Pioneer Venus have been used to map the broad radar characteristics of the equatorial region on the basis of radar brightness and texture. Seven units are defined and are used to assess the geologic character of the equatorial region. The correspondence between features in the 15 deg region of overlap between Pioneer Venus ans Venera 15/16 images is examined and used to extend units mapped in the northern high latitudes into the equatorial region. Using the properties of rms slope, reflectivity, the scattering behavior of the surface, and topographic signature, seven physiographic units are mapped on the basis of the distribution of the radar units in the equatorial region and are identified by increasing complexity as plains, dark halo plains, upland rises, upland plateaus, interhighland tectonic zones, tectonically segmented linear highlands, and tectonic junctions. The distribution of larger circular structures interpreted as coronae is also examined.
Document ID
19910038988
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Senske, D. A.
(Brown University Providence, RI, United States)
Date Acquired
August 15, 2013
Publication Date
December 1, 1990
Publication Information
Publication: Earth, Moon, and Planets
Volume: 50-51
ISSN: 0167-9295
Subject Category
Lunar And Planetary Exploration
Accession Number
91A23611
Funding Number(s)
CONTRACT_GRANT: NGR-40-002-116
CONTRACT_GRANT: NAGW-713
Distribution Limits
Public
Copyright
Other

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