Preliminary findings of the Viking gas exchange experiment and a model for Martian surface chemistry

Details Preliminary findings of the Viking gas exchange experiment and a model for Martian surface chemistry Preliminary findings of the Viking gas exchange experiment and a model for Martian surface chemistry

Jan 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977natur.265..110o&link_type=abstract

Nature, vol. 265, Jan. 13, 1977, p. 110-114. NASA-supported research.

Physics

29

Gas Exchange, Mars Surface, Soils, Viking Lander 1, Abundance, Carbon Dioxide, Morphology, Nitrogen, Oxygen, Planetary Evolution

Scientific paper

Earlier results reported from the Viking Lander-1 experiment are reexamined and interpreted in terms of a model of the Martian soil surface morphology and chemistry. Major events in the gas exchange experiment (GEX) first cycle are tabulated and data are presented on the sample processing and transport environments experienced by the soil samples. Oxygen and CO2 evolved from humidified Martian soil in GEX and slight changes in N2 present are investigated. A soil model involving iron oxide coating on silicate material is entertained to yield a mechanistic explanation of the experimental findings, and invocation of biotic processes is eschewed.

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