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Studies of Martian polar regions (1974)

Smith, C. I. ; Clark, B. R. ; Eschman, D. F.

In: CASI

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Publication Date: 2019-06-27

Description: The flow law determined experimentally for solid CO2 establishes that an hypothesis of glacial flow of CO2 at the Martian poles is not physically unrealistic. Compression experiments carried out under 1 atmosphere pressure and constant strain rate conditions demonstrate that the strength of CO2 near its sublimation point is considerably less than the strength of water ice near its melting point. A plausible glacial model for the Martian polar caps was constructed. The CO2 deposited near the pole would have flowed outward laterally to relieve high internal shear stresses. The topography of the polar caps, and the uniform layering and general extent of the layered deposits were explained using this model.

Keywords: LUNAR AND PLANETARY EXPLORATION

Type: NASA-CR-140819

Format: application/pdf

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