Computer Science
Scientific paper
Mar 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.326...30c&link_type=abstract
Nature (ISSN 0028-0836), vol. 326, March 5, 1987, p. 30-35.
Computer Science
89
Atmospheric Composition, Mars Atmosphere, Mars Surface, Outgassing, Planetary Composition, Water, Carbon Dioxide, Impact Damage, Planetary Structure, Rare Gases, Mars, Water, Abundance, Outgassing, Atmosphere, Erosion, Hydrodynamics, Escape, Impacts, Composition, Geology, Surface, Features, Photographs, Snc Meteorites, Viking Missions, Spacecraft Observations, Distribution, History, Hypotheses, Rare Gases, Carbon Dioxide, Topography, Climate, Ice, Volatiles, Nitrogen, Yuty, Mangala Vallis, Nirgal Vallis, Te
Scientific paper
Estimates of the amount of water outgassed from Mars, based on the composition of the atmosphere, range from 6 to 160 m, as compared with 3 km for the Earth. In contrast, large flood features, valley networks, and several indicators of ground ice suggest that at least 500 m of water have outgassed. The two sets of estimates may be reconciled if early in its history, Mars lost part of its atmosphere by impact erosion and hydrodynamic escape.
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