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Was Venus wet? Deuterium reconsideredThe ratio of deuterium to hydrogen on Venus has been accepted as proof of a wetter, more earth-like part on that planet. However, the present-day water abundance and the nonthermal hydrogen escape flux on Venus imply that hydrogen is in a steady state and that a hydrogen source, most likely cometary infall, is present. An alternative interpretation of the D/H ratio is offered, in which the measured value is consistent with a steady-state evolution over the age of the solar system. No past water excess is required to explain the isotopic data.
Document ID
19880034325
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Grinspoon, David H.
(Arizona, University Tucson, United States)
Date Acquired
August 13, 2013
Publication Date
December 18, 1987
Publication Information
Publication: Science
Volume: 238
ISSN: 0036-8075
Subject Category
Lunar And Planetary Exploration
Accession Number
88A21552
Funding Number(s)
CONTRACT_GRANT: NGT-03-002-803
Distribution Limits
Public
Copyright
Other

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