Mathematics
Scientific paper
Dec 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994icar..112..537z&link_type=abstract
Icarus (ISSN 0019-1035), vol. 112, no. 2, p. 537-540
Mathematics
5
Buffers (Chemistry), Fractionation, Mars (Planet), Nitrogen Isotopes, Regolith, Soils, Atmospheric Composition, Geochronology, Mathematical Models, Photochemical Reactions, X Ray Diffraction
Scientific paper
We have measured the adsorption of molecular nitrogen (N2) on palagonite, and modeled the adsorbed nitrogen inventory on the martian regolith. We were motivated by the fact that models of isotopic evolution predict stronger N2 fractionation than reported by Viking. Possible scenarios for reconciling models with the observation include a heavy CO2 atmosphere early in the planet's history, continued outgassing of N2 throughout the history of Mars, or a substantial adsorbed inventory. In this paper we investigate the plausibility of the last explanation. We find that the regolith reservoir of adsorbed N2 is inadequate by itself to buffer the atmospheric isotopic composition, but may play a role depending on the total regolith surface area available.
Jakosky Bruce M.
Quinn Richard C.
Zent Aaron P.
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