Giant impact-induced atmospheric blow-off

Details Giant impact-induced atmospheric blow-off Giant impact-induced atmospheric blow-off

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993lpi....24....7a&link_type=abstract

In Lunar and Planetary Inst., Twenty-fourth Lunar and Planetary Science Conference. Part 1: A-F p 7-8 (SEE N94-12015 01-91)

Physics

Impact Damage, Mars (Planet), Planetary Atmospheres, Planetary Evolution, Protoplanets, Shock Wave Propagation, Terrestrial Planets, Venus (Planet), Earth Atmosphere, Mars Atmosphere, Shock Waves, Venus Atmosphere

Scientific paper

The relationship between the present atmospheres of the Earth, Venus, and Mars and the earliest (primordial) atmospheres which surrounded these planets is discussed. The termination of the co-accretion of an atmosphere results from at least three different mechanisms, and these mechanisms are presented. To calculate the energy, and hence, approximate planetesimal size, such that upon impact the entire planetary atmosphere is blown off, a different approach than previous efforts is employed, and a shock wave that is entirely propagated within a terrestrial planet is considered.

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