Abstract：
:Mars Odyssey has given strong evidence for the existence of water in the upper martian surface at equatorial latitudes. The water content, which corresponds to the hydrogen in the soil, can regionally reach values up to about 15%. This water is mainly in the form of structurally and partially irreversibly bound "crystal" water, and of reversibly bound and partially unfrozen adsorption water. This adsorption water, which has "liquid-like" properties as a two dimensional fluid or film, can trigger-in the presence of ultraviolet light and in concentrations similar to what has been measured on Mars-photocatalytic processes that are important for martian surface chemistry. The consequences of the diurnally variable presence of adsorption water on the chemistry and hypothetical biological processes at and in the upper martian surface at equatorial and mid-latitudes are discussed in terms of water-related environmental aspects for chemical and hypothetical life processes on Mars.
journal_name
Astrobiologyjournal_title
Astrobiologyauthors
Möhlmann Ddoi
10.1089/ast.2005.5.770keywords:
subject
Has Abstractpub_date
2005-12-01 00:00:00pages
770-7issue
6eissn
1531-1074issn
1557-8070journal_volume
5pub_type
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