The Mars water cycle at other epochs - Recent history of the polar caps and layered terrain

Details The Mars water cycle at other epochs - Recent history of the polar caps and layered terrain The Mars water cycle at other epochs - Recent history of the polar caps and layered terrain

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993icar..102..286j&link_type=abstract

Icarus (ISSN 0019-1035), vol. 102, no. 2, p. 286-297.

Mathematics

Logic

40

Annual Variations, Hydrological Cycle, Mars Atmosphere, Planetary Evolution, Polar Caps, Brightness Temperature, Carbon Dioxide Concentration, Climate Change, Mars, Water, Cycles, History, Polar Caps, Polar Regions, Layers, Layered Terrain, Condensation, Sublimation, Water Ice, Parameters, Seasonal Variations, Model, Temperature, Climate, Transport, Dust, Timescale, Orbital Elements, Thermal Properties, Carbon Dioxide, Obliquity, Deposition

Scientific paper

A numerical model is presented of the integrated role of seasonal water cycle on the evolution of polar deposits on Mars over the last 10 million years. From the model, it is concluded that the only major difference between the polar caps which affects their long-term behavior is ultimately the difference in their elevations. Because of that difference, there is a preference for CO2 frost to stay longer on the northern polar cap. The average difference in sublimation at the caps results in a net south-to-north transport of water ice over long time scales. Superimposed on any long-term behavior is a transfer of water ice between the caps on the 10 exp 5 - 10 exp 6 yr time scales. The amount of water exchanged is small compared to the total ice content of the polar deposits.

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