Atmospheric erosion and replenishment induced by impacts of cosmic bodies upon the Earth and Mars

Details Atmospheric erosion and replenishment induced by impacts of cosmic bodies upon the Earth and Mars Atmospheric erosion and replenishment induced by impacts of cosmic bodies upon the Earth and Mars

Feb 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sosyr..41...28s&link_type=abstract

Solar System Research, Volume 41, Issue 1, pp.28-41

Other

7

96.12.Je, 96.12.Ke

Scientific paper

The atmospheric erosion induced by impacts of cosmic bodies with sizes from ˜100 m to 10 km is calculated for the Earth with its present atmosphere and for Mars with a dense carbon dioxide atmosphere that could be at the early stages of planetary evolution. Numerical results are compared to simple analytic models and calculations performed by other authors; approximate formulas are suggested. The evolutions of early atmospheres, which could exist at the late stage of the planetary accumulation, are numerically simulated using an integral model of impact-induced atmospheric erosion and replenishment in the approximation of a one-component atmosphere with a composition determined by the basic atmosphile component of the bodies falling onto the planet.

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