Argon degassing models of Mars

Details Argon degassing models of Mars Argon degassing models of Mars

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977natur.266...41h&link_type=abstract

Nature, vol. 266, Mar. 3, 1977, p. 41, 42.

Mathematics

Logic

5

Argon Isotopes, Atmospheric Models, Degassing, Mars Atmosphere, Viking Lander 1, Astronomical Models, Atmospheric Composition, Mass Ratios, Mass Spectroscopy

Scientific paper

The possible mechanisms of argon degassing models of Mars are discussed in connection with the high Ar-40/Ar-36 isotopic ratio measured by a mass spectrometer of the Viking I lander. The time variation of the Argon isotopic ratio in a closed system as function of the initial Ar-36/K ratio is shown in a graph, taking into account the isotopic ratios in terrestrial and Martian atmospheres. Certain difficulties regarding the interpretation of data are overcome by assuming that Ar-36 escaped from the Martian region during the geological history of Mars.

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