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Wind tunnel studies of Martian aeolian processes (1974)

Pollack, J. B. ; Iversen, J. D. ; White, B. ; [et al.]

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Publication Date: 2011-08-16

Description: In order to determine the nature of Martian aeolian processes, an investigation is in progress which involves wind tunnel simulations, geologic field studies, theoretical model studies, and analyses of Mariner 9 imagery; this report presents the preliminary results. Threshold speed experiments were conducted for particles ranging in relative density from 1.3 to 11.35 and diameter from 10.2 to 1290 microns to verify and better define Bagnold's (1941) expression for grain movement, particularly for low particle Reynolds numbers and to study the effects of aerodynamic lift and surface roughness. Wind tunnel simulations were conducted to determine the flow field over raised rim craters and associated zones of deposition and erosion.

Keywords: LUNAR AND PLANETARY EXPLORATION

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