Computer Science
Scientific paper
May 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981icar...46..226w&link_type=abstract
Icarus, vol. 46, May 1981, p. 226-232.
Computer Science
13
Particle Trajectories, Planetology, Sediment Transport, Venus Surface, Dunes, Equations Of Motion, Particle Collisions, Particle Size Distribution, Venus, Saltation, Trajectories, Particles, Comparisons, Winds, Velocity, Pressure, Equations Of Motion, Surface, Temperatures, Transport, Data, Parameters, Features
Scientific paper
Numerical solutions are given for particle trajectory equations of motion for the surface of Venus. Particles in saltation obtain maximum heights of two or less centimeters, and have path lengths of less than a meter regardless of particle diameter. The saltation process and particle trajectories are found insensitive to surface pressure changes over the range of 70 to 100 bars, and temperature changes over the range of 600 to 900 K. Due to dense atmosphere, the net rate of surface material transport due to saltation is small for particles in diameters from 0.01 to 7 mm, as compared to earth which has 10 times more, and Mars which has 250 times more. Path length scales are also found to be very small, suggesting the presence of dunes on Venus; however, there is still a possibility that small ripples do exist, which cannot be detected by high-resolution radar images.
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