Seasonal carbon dioxide exchange between the regolith and atmosphere of Mars - Experimental and theoretical studies

Details Seasonal carbon dioxide exchange between the regolith and atmosphere of Mars - Experimental and theoretical studies Seasonal carbon dioxide exchange between the regolith and atmosphere of Mars - Experimental and theoretical studies

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....8710215f&link_type=abstract

(International Colloquium on Mars, 3rd: Dedicated to Thomas A. Mutch /1931-1980/, Pasadena, CA, Aug. 30-Sept. 2, 1982.) Journal

Other

16

Air Land Interactions, Carbon Dioxide Concentration, Gas Exchange, Mars Atmosphere, Regolith, Annual Variations, Astronomical Models, Gas Pressure, Gaseous Diffusion, Mars Surface, Porous Materials, Temperature Effects

Scientific paper

CO2 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.

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