Mathematics – Logic
Scientific paper
May 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apg..book..180t&link_type=abstract
In its Advan. in Planetary Geol. p 180-204 (SEE N84-25567 15-91)
Mathematics
Logic
Environment Simulators, Gas Viscosity, Nitrogen, Solids Flow, Wind Erosion, Wind Tunnel Tests, Calibrating, Carbon Dioxide, Comparison, Density (Number/Volume), Environment Simulation, Gravitational Effects, Particle Size Distribution, Sands
Scientific paper
In order to obtain data on Earth geologic processes associated with wind erosion, Mar's and Venus' atmospheres were simulated. Experiments were designed to observe the effects of pressure, gravity, and density on sand movement. An experiment designed to test the operator variance was a comparative test between nitrogen and carbon dioxide. Pressure and therefore density was increased until threshold was noted. Threshold was determined at precisely the same densities of the two gases. If viscosity were a contributing factor in grain saltation the effect would be noted at low pressures. The experiment showed no such variance between carbon dioxide and nitrogen runs for low pressure (density). The largest difference in viscosity between carbon dioxide and nitrogen occurs at low pressures (densities).
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