Evolution of the water regime of PHOBOS

Details Evolution of the water regime of PHOBOS Evolution of the water regime of PHOBOS

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...88..380f&link_type=abstract

Icarus (ISSN 0019-1035), vol. 88, Dec. 1990, p. 380-395.

Mathematics

Logic

10

Heat Flux, Ice, Phobos, Planetary Evolution, Satellite Surfaces, Water Vapor, Planetary Geology, Temperature Gradients, Time Dependence

Scientific paper

In the present model of Phobos water regime evolution, a time-dependent solar insolation is influenced by both decreasing solar output over geologic time and the Mars and Phobos cycles of eccentricity and obliquity, which vary over 100,000-1,000,000 year time scales. The results presented address model cases which assume (1) a homogeneous distribution of water ice, and (2) a driving of water ice toward the surface by the internal thermal gradient near the poles. A two-dimensional model is used to compute temperatures, heat and vapor fluxes, and ice removal/deposition rates, for the case of uniform ice distribution throughout Phobos. The results obtained indicate that a substantial amount of vapor is produced within 1 km of the surface.

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