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Xenological constraints on the impact erosion of the early Martian atmosphereThis paper considers impact erosion as the agent of the early Martian atmophere escape, by examining xenon-related constraints imposed on the impact erosion. It is found that, if impact erosion of a planetary atmosphere is important, the remnant atmosphere is likely to fall into one of two qualitatively distinct categories: (1) cometary xenon has an unexpected isotopic composition or (2) factors other than impacts, such as outgassing or recycling, are needed. Neither of these categories can readily account for the present Martian atmosphere.
Document ID
19930060264
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Zahnle, Kevin J.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 16, 2013
Publication Date
June 25, 1993
Publication Information
Publication: Journal of Geophysical Research
Volume: 98
Issue: E6
ISSN: 0148-0227
Subject Category
Lunar And Planetary Exploration
Accession Number
93A44261
Distribution Limits
Public
Copyright
Other

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