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mars - co2 adsorption and capillary condensation on clays: significance for volatile storage and atmospheric historyResults 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.
Document ID
19800042223
Document Type
Reprint (Version printed in journal)
Authors
Fanale, F. P.
(California Institute of Technology, Jet Propulsion Laboratory, Space Science Div., Pasadena Calif., United States)
Cannon, W. A.
(Skinned Knuckles, Inc. Monrovia, Calif., United States)
Date Acquired
August 10, 2013
Publication Date
December 30, 1979
Publication Information
Publication: Journal of Geophysical Research
Volume: 84
Subject Category
LUNAR AND PLANETARY EXPLORATION
Funding Number(s)
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Other