Martian Fluvial-Thermal Erosion: Laboratory Simulation

Details Martian Fluvial-Thermal Erosion: Laboratory Simulation Martian Fluvial-Thermal Erosion: Laboratory Simulation

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..261c&link_type=abstract

Lunar and Planetary Science, volume 27, page 261

Physics

Erosion: Thermal, Laboratory Simulation, Mars, Outflow, Permafrost

Scientific paper

Examination of the Martian conditions leads to the idea that analogies may be considered between the Martian and Terrestrial periglacial climates. Particularly, the formation processes for Martian outflow channels and Siberian valleys seem to be similar: the presence of ground-ice and wide rivers, both on Mars and in Siberia, suggests the occurence of thermal erosion during the flooding event. Thermal erosion is the result of ground thawing produced by the heat transfer from the water flow to the frozen ground. The dynamics of these flows under cold climate conditions induce the propagation of a thawing line in the ground and a rapid bank recession, with removal of sediments equal to 19 to 24 m/year. In order to estimate the thermal erosion efficiency in Mars, we have utilized a one-dimensional model. To test the ablation model, a hydraulic channel has been built. The purpose of the experimental study is to mesure the propagation of the thawing line in a simulated Martian ground ice and the thermal erosion rate.

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