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Threshold windspeeds for sand on Mars - Wind tunnel simulations (1980)

Greeley, R. ; Pollack, J. ; Iversen, J. ; [et al.]

In: Other Sources

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Publication Date: 2011-08-17

Description: Wind friction threshold speeds for particle movement were determined in a wind tunnel operating at martian surface pressure with a 95 percent CO2 and 5 percent air atmosphere. The relationship between friction speed and free-stream velocity is extended to the critical case for Mars of momentum thickness Reynolds numbers between 425 and 2000. It is determined that the dynamic pressure required to initiate saltation is nearly constant for pressures between 1 bar and 4 mb for atmospheres of both air and CO2.

Keywords: LUNAR AND PLANETARY EXPLORATION

Type: Geophysical Research Letters; 7; Feb. 198

Format: text

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