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Seasonal carbon dioxide exchange between the regolith and atmosphere of Mars - Experimental and theoretical studiesCO2 penetration rate measurements have been made through basalt-clay soils under conditions simulating the penetration of the cap-induced seasonal CO2 pressure wave through the topmost regolith of Mars, and results suggest that existing theoretical models for the diffusion of a gas through a porous and highly adsorbing medium may be used to assess the importance of the Martian seasonal regolith-atmosphere CO2 exchange. The maximum effect of thermally driven exchange between the topmost seasonally (thermally) affected regolith and the atmosphere shows that, while this may be of greater importance than the isothermal exchange, the thermally driven exchange would be recognizable only if the pressure wave from CO2 exchanged at high latitudes did not propagate atmospherically faster than the rate at which the exchange itself occurred. This is an unreasonable assumption.
Document ID
19830034370
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Fanale, F. P.
(Hawaii Univ. Honolulu, HI, United States)
Salvail, J. R.
(Hawaii, University Honolulu, HI, United States)
Banerdt, W. B.
(Hawaii Univ. Honolulu, HI, United States)
Saunders, R. S.
(Hawaii Univ. Honolulu, HI, United States)
Johansen, L. A.
(California Institute of Technology, Jet Propulsion Laboratory, Space Science Div., Pasadena CA, United States)
Date Acquired
August 11, 2013
Publication Date
November 30, 1982
Subject Category
Lunar And Planetary Exploration
Accession Number
83A15588
Funding Number(s)
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Other

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