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Windblown sand on Mars: The effect of saltation threshold on drift potentials derived from Mars GCMThe rate at which the wind can redistribute sedimentary material is an important part of any planet's sedimentologic cycle, particularly for Mars, where the competing effects of other gradational processes are less than on Earth. The aeolian drift potential (DP) is a measure of the amount of material capable of being moved through a unit length by the wind for a given period of time. DP is a useful measure of the potential redistribution rate of windblown material on regional scales. The Martian aeolian DP was calculated from laboratory studies of sand movement conducted at Martian atmospheric densities and from surface stress, temperature, and pressure values for that region as determined from the Mars General (Atmospheric) Circulation Model (GCM) developed at the NASA/Ames Research Center. In our simulations for Mars, DP changes in both magnitude (as expected) and direction if the saltation threshold is altered.
Document ID
19940030968
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Xu, P. (Arizona State Univ. Tempe, AZ., United States)
Greeley, R. (Arizona State Univ. Tempe, AZ., United States)
Williams, S. (Arizona State Univ. Tempe, AZ., United States)
Pollack, J. B. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1994
Publication Information
Publication: Lunar and Planetary Inst., The Twenty-Fifth Lunar and Planetary Science Conference. Part 3: P-Z
Subject Category
Lunar And Planetary Exploration
Accession Number
94N35474
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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