Computer Science
Scientific paper
Jan 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982kosis..20..111i&link_type=abstract
Kosmicheskie Issledovaniia, vol. 20, Jan.-Feb. 1982, p. 111-127. In Russian.
Computer Science
Atmospheric Composition, Planetary Atmospheres, Planetary Evolution, Protoplanets, Terrestrial Planets, Volatility, Abundance, Carbon Dioxide, Planetary Composition, Planetary Nebulae, Solar Corona, Water Vapor
Scientific paper
Abundances of volatiles in the atmospheres of the terrestrial planets are investigated in comparison with their abundance in the solar nebula. Data on the abundances of volatiles in chondrites are used to assess their abundances in solid planetary material. Results support the hypothesis that inert gases entered the atmospheres of the terrestrial planets through accretion from the protoplanetary nebula, while chemically active gases entered these atmospheres through both accretion and degassing of the solid material. It is also suggested that the dissipation of gases from the protoplanetary nebula led to a change in its composition, and that the primordial atmospheres were formed from carbon dioxide and water vapor, which were not dissipated, but gradually evolved.
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