Water in the Martian regolith
The state of water in the Martian regolith is addressed. The water-ice phase composition, adsorption-desorption and evaporation phenomena, and brine compositions of six antarctic soils that are considered to be good terrestrial analogues of the Martian surface materials are examined. Experiments hav...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19890016420 2023-05-15T13:35:10+02:00 Water in the Martian regolith Anderson, Duwayne M. Unclassified, Unlimited, Publicly available JAN 1, 1988 application/pdf http://hdl.handle.net/2060/19890016420 unknown Document ID: 19890016420 Accession ID: 89N25791 http://hdl.handle.net/2060/19890016420 No Copyright CASI LUNAR AND PLANETARY EXPLORATION Lunar and Planetary Inst., MECA Workshop on Atmospheric H2O Observations of Earth and Mars. Physical Processes, Measurements and Interpretations; p 11-18 1988 ftnasantrs 2015-03-15T05:55:30Z The state of water in the Martian regolith is addressed. The water-ice phase composition, adsorption-desorption and evaporation phenomena, and brine compositions of six antarctic soils that are considered to be good terrestrial analogues of the Martian surface materials are examined. Experiments have shown that, for temperatures below freezing and relative humidities less than 100 percent, absorbed water and vapor are the only stable phases in the regolith. When the relative humidity reaches 100 percent, ice may form and coexist with the absorbed liquid phase. The absorbed water content declines with decreasing temperature; however, the presence of dissolved solutes can result in appreciable adsorbed liquid phase at temperatures as low as 210 K. Such properties may have a profound influence on martial geomorphology, physical and chemical weathering, and the exchange of water between the atmosphere and regolith. Other/Unknown Material Antarc* Antarctic NASA Technical Reports Server (NTRS) Antarctic |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
LUNAR AND PLANETARY EXPLORATION |
spellingShingle |
LUNAR AND PLANETARY EXPLORATION Anderson, Duwayne M. Water in the Martian regolith |
topic_facet |
LUNAR AND PLANETARY EXPLORATION |
description |
The state of water in the Martian regolith is addressed. The water-ice phase composition, adsorption-desorption and evaporation phenomena, and brine compositions of six antarctic soils that are considered to be good terrestrial analogues of the Martian surface materials are examined. Experiments have shown that, for temperatures below freezing and relative humidities less than 100 percent, absorbed water and vapor are the only stable phases in the regolith. When the relative humidity reaches 100 percent, ice may form and coexist with the absorbed liquid phase. The absorbed water content declines with decreasing temperature; however, the presence of dissolved solutes can result in appreciable adsorbed liquid phase at temperatures as low as 210 K. Such properties may have a profound influence on martial geomorphology, physical and chemical weathering, and the exchange of water between the atmosphere and regolith. |
format |
Other/Unknown Material |
author |
Anderson, Duwayne M. |
author_facet |
Anderson, Duwayne M. |
author_sort |
Anderson, Duwayne M. |
title |
Water in the Martian regolith |
title_short |
Water in the Martian regolith |
title_full |
Water in the Martian regolith |
title_fullStr |
Water in the Martian regolith |
title_full_unstemmed |
Water in the Martian regolith |
title_sort |
water in the martian regolith |
publishDate |
1988 |
url |
http://hdl.handle.net/2060/19890016420 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
CASI |
op_relation |
Document ID: 19890016420 Accession ID: 89N25791 http://hdl.handle.net/2060/19890016420 |
op_rights |
No Copyright |
_version_ |
1766061885278388224 |