HDO in the Martian atmosphere - implications for the abundance of crustal water
Journal Article
·
· Icarus; (United States)
A one-dimensional photochemical model is presently used to ascertain the nature of those chemical and physical processes of the Martian atmosphere responsible for the preferential escape of hydrogen over deuterium. A comparison of the present theoretical considerations with recent HDO observations indicates that Mars contains 0.2 m of (globally averaged) crustal water that is exchangeable with the atmosphere. This estimate, which is substantially lower than those obtained for Martian subsurface water on the basis of Viking image-derived geomorphological analyses, can be reconciled only if a small fration of the crustal water is exchangeable with the atmosphere. 67 references.
- Research Organization:
- California Institute of Technology, Pasadena (USA)
- OSTI ID:
- 6534512
- Journal Information:
- Icarus; (United States), Journal Name: Icarus; (United States) Vol. 76; ISSN ICRSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640107* -- Astrophysics & Cosmology-- Planetary Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
AIR-WATER INTERACTIONS
ATMOSPHERES
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
DEUTERIUM
ELEMENTS
GEOLOGY
GEOMORPHOLOGY
HEAVY WATER
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
MARS PLANET
MATHEMATICAL MODELS
NONMETALS
NUCLEI
ODD-ODD NUCLEI
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PLANETARY ATMOSPHERES
PLANETS
STABLE ISOTOPES
WATER
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
AIR-WATER INTERACTIONS
ATMOSPHERES
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
DEUTERIUM
ELEMENTS
GEOLOGY
GEOMORPHOLOGY
HEAVY WATER
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
MARS PLANET
MATHEMATICAL MODELS
NONMETALS
NUCLEI
ODD-ODD NUCLEI
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PLANETARY ATMOSPHERES
PLANETS
STABLE ISOTOPES
WATER