Duration of liquid water habitats on early Mars

Details Duration of liquid water habitats on early Mars Duration of liquid water habitats on early Mars

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...90..214m&link_type=abstract

Icarus (ISSN 0019-1035), vol. 90, April 1991, p. 214-221.

Computer Science

57

Atmospheric Temperature, Carbon Dioxide Concentration, Liquid Phases, Mars Surface, Water, Ice, Melting Points, Solar Radiation, Mars, Water, Climate, Models, Timescale, Ice, Freezing, Temperature, Pressure, Atmosphere, Luminosity, Liquid Phase, Carbon Dioxide, Life, Surface, Thickness, Hydrology, Carbonates, Comparisons, Weathering, Solar Effects

Scientific paper

The duration of ice-covered lakes after the initial freezing of the early Mars is presently estimated via a climate model whose critical parameter is the existence of peak seasonal temperatures above freezing, and in which the variability of insolation is included. Under conditions in which meltwater was supplied by an ice source, it is found that water habitats could have been maintained under relatively thin ice sheets for as many as 700 million years after the onset of below-freezing global temperatures. The duration of such habitats on the early Mars therefore exceeds the upper limit of the time envisioned for the emergence of aquatic life on earth.

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