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Environmental Dynamics and the Habitability Potential at Gale Crater, Mars
NASA Goddard Space Flight Center, Greenbelt, Maryland.
NASA Goddard Space Flight Center, Greenbelt, Maryland.
University of Michigan, Ann Arbor.
NASA Ames Research Center, Moffett Field.
Vise andre og tillknytning
Rekke forfattare: 272013 (engelsk)Konferansepaper, Oral presentation only (Fagfellevurdert)
Abstract [en]

The assessment of environmental habitability potential involves measurement of the chemical and physical attributes of the system as well as their dynamic interplay. The environmental dynamics describe the availability of both energy sources and raw materials for meeting the requirements of organisms and for altering the environment. Energetic exchange can also determine the preservation potential for organic materials in the rock record. During its first year at Gale Crater, the Mars Science Laboratory payload has directly measured the chemistry and physical attributes, e.g., temperature, humidity, radiation, pressure, etc. of the martian atmosphere. Curiosity has also acquired chemical and mineralogical data, both from a wind drift deposit of fines and from two examples of a sedimentary rock formation in a region of Gale Crater called Yellowknife Bay, some 445 meters to the east of Bradbury Landing, where Curiosity initially touched down. These data enabled inferences to be made regarding depositional environment and past habitability potential at Gale Crater. The rock chemistry data reveal signs of aqueous interaction i.e., H2O, OH and H2 and sufficient elemental basis (C, H, O, S and possibly N) for plausible nutrient supply, should Mars have ever had autotrophic prokaryotes to exploit it, and a range of redox conditions tolerable to Earth microbes is indicated by the presence of clay minerals. Curiosity’s observations of the chemical, physical and geologic features of Yellowknife Bay point to a formerly habitable environment.

sted, utgiver, år, opplag, sider
2013.
HSV kategori
Forskningsprogram
Atmosfärsvetenskap
Identifikatorer
URN: urn:nbn:se:ltu:diva-32727Lokal ID: 74dfe977-e018-4408-a13e-8a095593923fOAI: oai:DiVA.org:ltu-32727DiVA, id: diva2:1005961
Konferanse
American Geophysical Union. 2013 Fall meeting : 09/12/2013 - 13/12/2013
Merknad

Upprättat; 2013; 20150630 (ninhul)

Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2017-11-25bibliografisk kontrollert

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http://abstractsearch.agu.org/meetings/2013/FM/B24A-01.html

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