Physics
Scientific paper
Dec 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.8404f&link_type=abstract
Journal of Geophysical Research, vol. 84, Dec. 30, 1979, p. 8404-8414.
Physics
11
Adsorption, Carbon Dioxide, Mars Atmosphere, Mars Surface, Planetary Temperature, Clays, Condensing, Regolith, Temperature Distribution
Scientific paper
Results on the adsorbate-adsorbent system CO2-nontronite are reported at 230, 196, and 158 deg K, covering the range of subsurface regolith temperature on Mars. A three-part regolith-atmosphere-cap model reveals that cold nontronite, and expanding clays in general, are far better but far more complex CO2 adsorbers than cold pulverized basalt. In addition, the layered terrain, and possibly the adjacent debris mantle, contains about 2% or more by mass of atmosphere-exchangeable CO2 and the total regolith inventory of available adsorbed CO2 is estimated to be 400 g/ sq cm.
Cannon W. A.
Fanale Fraser P.
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