Impact erosion of the primordial atmosphere of Mars

Details Impact erosion of the primordial atmosphere of Mars Impact erosion of the primordial atmosphere of Mars

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989natur.338..487m&link_type=abstract

Nature (ISSN 0028-0836), vol. 338, April 6, 1989, p. 487-489.

Other

198

Atmospheric Density, Atmospheric Models, Impact Damage, Mars Atmosphere, Planetary Evolution, Computerized Simulation, Geomorphology, Water, Mars, Atmosphere, Impact Effects, Erosion, Pressure, Models, Flux, Bombardment, Calculations, Climate, History, Velocity, Escape, Impacts, Vapor, Parameters, Outgassing, Composition, Mass, Size, Timescale

Scientific paper

The process of atmospheric erosion by impacts is examined and it is shown that the process may account for an early episode of atmosphere loss from Mars. On the basis of this model, the primordial atmospheric pressure on Mars must have been in the vicinity of 1 bar, barring other sources or sinks of CO2. Current impact fluxes are too small to erode significantly the present Martian atmosphere.

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