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La Houille Blanche, N°6 (Novembre-Décembre 2005), pp. 38-58
DOI: 10.1051/lhb:200506003
Présence historique et contemporaine d'eau sur Mars- des modèles géochimiques et planétologiques aux observations in situ : état des connaissances
Michel Detay Abstract - Historical and contemporary presence of water on mars - from geochemical and planetological models to in situ observations: present state of knowledge
We report the first known extraterrestrial water cycle, where hydrological processes involve rivers due to ice break-up, glaciers, lakes, oceans, thermokarsts, a regolith, aquifers, the proven physical influence of water in the weathering of rocks, a greenhouse effect, as well as coupling between the cryosphere, lithosphere and environment.
Based on recent data collected by MGS and MO, as well as geochemical and planetological data, we present a coherent synthesis/overview that puts the historical hydrology and contemporary hydrogeology of this planet in perspective. Finally, we discuss the possible emergence of life and set out the prospects for Martian exploration as well as the development of water engineering and related sciences in the future.
Résumé - Nous rendons compte du premier cycle de l'eau extraterrestre connu, où l'on rencontre un cycle hydrologique avec des rivières de débâcle, des glaciers, des lacs, des océans, des thermokarsts, un régolithe, des aquifères, l'influence physique avérée de l'eau dans des processus d'altération des roches, un effet de serre, et des liens entre cryosphère, lithosphère et environnement.
A partir de données récentes acquises grâce à MGS et MO et des données géochimiques et planétologiques, nous présentons un ensemble cohérent mettant en perspective l'hydrologie historique et l'hydrogéologie contemporaine de la planète Mars. Enfin, nous nous intéressons à une possible émergence de la vie et jetons les bases de la future exploration martienne et du devenir des sciences hydrotechniques.
Mots clés : Ressources en eau
© Société Hydrotechnique de France 2005
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