Physical and chemical modification of the surface of Venus by windblown particles

Details Physical and chemical modification of the surface of Venus by windblown particles Physical and chemical modification of the surface of Venus by windblown particles

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.327..313g&link_type=abstract

Nature (ISSN 0028-0836), vol. 327, May 28, 1987, p. 313-315.

Physics

Geophysics

6

Planetary Environments, Venus Surface, Wind Effects, Wind Erosion, Geochemistry, Geophysics, Particle Motion, Venus, Physical Properties, Chemistry, Surface, Wind, Eolian Effects, Particles, Erosion, Simulations, Laboratory Studies, Diagrams, Equipment, Electron Microscopy, Sem, Photomicrographs, Grains, Debris, Procedure, Experiments, Abrasion, Weathering

Scientific paper

The results of simulations of the Venusian surface environment involving windblown grains are presented which show that significant chemical and physical changes may occur even in the slow-moving winds recorded on Venus. The edges of grains become worn and shed comminuted debris, which collects on weathered surfaces and grains alike. The resulting transfer of material from loose grains to bedrock surfaces (and vice versa) could yield misleading results on rock composition; moreover, the generation of comminuted debris would enhance chemical reactions that could affect the composition of the atmosphere. The results are thus relevant in assessing rates of surface degradation, the evolution of small-scale surface features as seen in images returned from the Soviet Venera missions, and in the interpretation of compositional data for surface materials.

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