Statistics – Applications
Scientific paper
Jan 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998lpico.953...13g&link_type=abstract
The First International Conference on Mars Polar Science and Exploration, Proceedings of the Conference held at Camp Allen, TX.
Statistics
Applications
Dynamic Models, Ice, Mars (Planet), Mars Surface, Polar Caps, Simulation, Conductive Heat Transfer, Glaciers
Scientific paper
The present permanent north polar water ice cap of Mars is investigated with the dynamic/thermo- dynamic ice-sheet model SICOPOLIS (SImulation COde for POLythermal Ice Sheets), which was originally developed for and applied to terrestrial ice sheets like Greenland, Antarctica, and the glacial northern hemisphere. The model is based on the continuum-mechanical theory of polythermal ice masses, which describes the material ice as a density-preserving, heat-conducting power-law fluid with thermomechanical coupling due to the strong temperature dependence of the ice viscosity. It is further distinguished between cold ice with a temperature below the pressure melting point and temperate ice with a temperature at the pressure melting point, the latter being considered as a binary mixture of ice and small amounts of water. The influence of the considerable dust content of the ice cap on the mechanical properties of the ice is neglected. The model computes three-dimensionally the temporal evolution of ice extent, thickness, temperature, water content, and age as a response to external forcing. The latter must be specified by (1) the mean annual air temperature above the ice, (2) the surface mass balance (ice accumulation minus melting and evaporation), (3) global sea level (not relevant for martian applications), and (4) the geothermal (aerothermal) heat flux from below into the ice body.
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