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Preliminary findings of the Viking gas exchange experiment and a model for Martian surface chemistryEarlier 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.
Document ID
19770037159
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Oyama, V. I.
(NASA Ames Research Center Moffett Field, CA, United States)
Berdahl, B. J.
(NASA Ames Research Center Moffett Field, CA, United States)
Carle, G. C.
(NASA Ames Research Center Planetary Exploration Office, Moffett Field, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
January 13, 1977
Publication Information
Publication: Nature
Volume: 265
Subject Category
Lunar And Planetary Exploration
Accession Number
77A20011
Distribution Limits
Public
Copyright
Other

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