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Kereszturi, A. und Möhlmann, D. und Berczi, Sz. und Ganti, T. und Horvath, A. und Kuti, A. und Sik, A. (2010) Seepages and the astrobiological potential of polar dunes on Mars. In: Astrobiology: Physical Origin, Biological Evolution and Spatial Distribution Space Science, Exploration and Policies. Nova Science Publishers. Seiten 97-113. ISBN 978-1-60741-290-8.
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Kurzfassung
At the polar dunes of Mars branching dark slope streaks emanate from Dark Dune Spots were observed in local springtime on MOC and HiRISE image. They seep downward with speed of 1.4 meter/sol when the temperature of the terrain on 3 km spatial resolution is between 180 and 250 K. Theoretical considerations and calculations suggest interfacial liquid-like water have to be present on the Mars, and probably cause the observed seepage features. The thin water lubricated grains may slide over each other, and/or the stress caused by the refreezing of this interfacial wate could also produce such markings, as well as the moving front of solid ice/liquid water phase changes. Such ephemerally wet environment between the dune grains may have astrobiological significance.
| Dokumentart: | Beitrag in einem Lehr- oder Fachbuch | ||||||||||||||||||||||||
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| Titel: | Seepages and the astrobiological potential of polar dunes on Mars | ||||||||||||||||||||||||
| Autoren: |
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| Datum: | 2010 | ||||||||||||||||||||||||
| Erschienen in: | Astrobiology: Physical Origin, Biological Evolution and Spatial Distribution | ||||||||||||||||||||||||
| In Open Access: | Nein | ||||||||||||||||||||||||
| In SCOPUS: | Nein | ||||||||||||||||||||||||
| In ISI Web of Science: | Nein | ||||||||||||||||||||||||
| Seitenbereich: | Seiten 97-113 | ||||||||||||||||||||||||
| Herausgeber: |
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| Verlag: | Nova Science Publishers | ||||||||||||||||||||||||
| Name der Reihe: | Space Science, Exploration and Policies | ||||||||||||||||||||||||
| ISBN: | 978-1-60741-290-8 | ||||||||||||||||||||||||
| Status: | veröffentlicht | ||||||||||||||||||||||||
| Stichwörter: | Mars, polar dunes, water, dark dune spots | ||||||||||||||||||||||||
| HGF - Forschungsbereich: | Verkehr und Weltraum (alt) | ||||||||||||||||||||||||
| HGF - Programm: | Weltraum (alt) | ||||||||||||||||||||||||
| HGF - Programmthema: | W EW - Erforschung des Weltraums | ||||||||||||||||||||||||
| DLR - Schwerpunkt: | Weltraum | ||||||||||||||||||||||||
| DLR - Forschungsgebiet: | W EW - Erforschung des Weltraums | ||||||||||||||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | W - Vorhaben Vergleichende Planetologie (alt) | ||||||||||||||||||||||||
| Standort: | Berlin-Adlershof | ||||||||||||||||||||||||
| Institute & Einrichtungen: | Institut für Planetenforschung | ||||||||||||||||||||||||
| Hinterlegt von: | Pieth, Susanne | ||||||||||||||||||||||||
| Hinterlegt am: | 12 Okt 2010 13:54 | ||||||||||||||||||||||||
| Letzte Änderung: | 12 Okt 2010 13:54 |
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