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Magellan - Electrical and physical properties of Venus' surface (1991)

Pettengill, Gordon H. ; Tyler, G. Leonard ; Ford, Peter G. ; [et al.]

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Publication Date: 2011-08-19

Description: Magellan probes Venus'surface by 12.6-cm-wavelength vertical and oblique radar scattering and measures microwave thermal emission. Emissivity and root-mean-square slope maps between 330 deg and 30 deg E and 90 deg N and 80 deg S are dissimilar, although some local features are exceptions. Inferred surface emissivities typically are 0.85, but vary from 0.35 at Maxwell to 0.95 northeast of Gula Mons and other locations. Lowest emissivities appear in topographically high areas; this relation suggests that a phase change or differences in chemical weathering occur at about 6055-kilometer radius. Initial results indicate that there are significant variations in the surface scattering function.

Keywords: LUNAR AND PLANETARY EXPLORATION

Type: Science (ISSN 0036-8075); 252; 265-270

Format: text

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