Computer Science
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992lpico.789...97s&link_type=abstract
In Lunar and Planetary Inst., Papers Presented to the International Colloquium on Venus p 97-99 (SEE N93-14288 04-91)
Computer Science
Lithosphere, Magellan Spacecraft (Nasa), Planetary Geology, Plates (Tectonics), Radar Imagery, Subduction (Geology), Tectonics, Venus Surface, Asymmetry, Curvature, Planforms, Radii, Topography, Troughs, Venus (Planet)
Scientific paper
Though there is no plate tectonics per se on Venus, recent Magellan radar images and topographic profiles of the planet suggest the occurrence of the plate tectonic processes of lithospheric subduction and back-arc spreading. The perimeters of several large coronae (e.g., Latona, Artemis, and Eithinoha) resemble Earth subduction zones in both their planform and topographic profile. The planform of arcuate structures in Eastern Aphrodite were compared with subduction zones of the East Indies. The venusian structures have radii of curvature that are similar to those of terrestrial subduction zones. Moreover, the topography of the venusian ridge/trench structures is highly asymmetric with a ridge on the concave side and a trough on the convex side; Earth subduction zones generally display the same asymmetry.
Sandwell David T.
Schubert Gerald
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