Physics – Geophysics
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pggp.rept..279m&link_type=abstract
In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1986 p 279-281 (SEE N87-23341 16-91)
Physics
Geophysics
Abrasion, Impact Tests, Sands, Venus Surface, Wind Effects, Wind Erosion, Atmospheric Temperature, Fracturing, Pitting, Simulation, Venus Atmosphere
Scientific paper
The role of atmospheric pressure on aeolian abrasion was examined in the Venus Simulator with a constant temperature of 737 K. Both the rock target and the impactor were fine-grained basalt. The impactor was a 3 mm diameter angular particle chosen to represent a size of material that is entrainable by the dense Venusian atmosphere and potentially abrasive by virtue of its mass. It was projected at the target 10 to the 5 power times at a velocity of 0.7 m/s. The impactor showed a weight loss of approximately 1.2 x 10 to the -9 power gm per impact with the attrition occurring only at the edges. Results from scanning electron microscope analysis, profilometry, and weight measurement are summarized. It is concluded that particles can incur abrasion at Venusian temperatures even with low impact velocities expected for Venus.
Greeley Ronald
Marshall Jonathan R.
Pollack James B.
Tucker D. W.
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