Mass transport by Aeolian saltation on Earth, Mars and Venus: The effects of full saltation cloud development and choking

Details Mass transport by Aeolian saltation on Earth, Mars and Venus: The effects of full saltation cloud development and choking Mass transport by Aeolian saltation on Earth, Mars and Venus: The effects of full saltation cloud development and choking

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pggp.rept..274w&link_type=abstract

In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1986 p 274-275 (SEE N87-23341 16-91)

Physics

Geophysics

Clouds, Dust, Earth Surface, Mars Surface, Sands, Sediment Transport, Venus Surface, Wind Effects, Wind Tunnel Tests, Atmospheric Density, Collision Parameters, Particle Density (Concentration), Thresholds, Wind Velocity

Scientific paper

Wind tunnel tests were conducted to study the characteristics of particle motion and the quantity transported by wind under a variety of planetary environmental conditions. Analysis of the results indicates that, on Earth, saltation fully develops at near-threshold wind speeds and rarely chokes (retarding of saltation due to high particle concentration and subsequent increase of mid-air collisions). On Mars, saltation becomes fully developed only at favorable locations and at wind speeds well above threshold. The Martian saltation cloud has an insufficient particle concentration to cause choking, particularly over a partially rocky surface. On Venus, full saltation occurs at wind speeds very near threshold, but saltation flux increases less rapidly than expected at relatively modest wind speeds due to choking.

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