Stability of water ice under a porous nonvolatile layer: implications to the south polar layered deposits of Mars

Details Stability of water ice under a porous nonvolatile layer: implications to the south polar layered deposits of Mars Stability of water ice under a porous nonvolatile layer: implications to the south polar layered deposits of Mars

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001p%26ss...49...59s&link_type=abstract

Planetary and Space Science, Volume 49, Issue 1, p. 59-63.

Computer Science

14

Scientific paper

The analysis of the Viking IRTM data led to the conclusion that the surface layer of the Mars south polar layered deposits has very low thermal inertia. This is consistent with the layered deposits being mantled by a layer consisting of very fine dust. Analysis of the heat and mass transport through such a layer allows us to estimate the minimum thickness of a dust mantle required to guarantee water ice stability beneath it. We find that if the thermal inertia is as low as 100Jm-2s-1/2K-1 and the dust layer is composed of particles of about 10μm, then a 5 mm thick layer is sufficient to keep the ground water ice stable on at least seasonal time scales.

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