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Soil Diversity and Hydration as Observed by ChemCam at Gale Crater, Mars
Université de Toulouse, UPS-OMP, IRAP.
Université de Toulouse, UPS-OMP, IRAP.
Université de Toulouse, UPS-OMP, IRAP.
Université de Toulouse, UPS-OMP, IRAP.
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Number of Authors: 622013 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 341, no 6153, article id 1238670Article in journal (Refereed) Published
Abstract [en]

The ChemCam instrument, which provides insight into martian soil chemistry at the submillimeter scale, identified two principal soil types along the Curiosity rover traverse: a fine-grained mafic type and a locally derived, coarse-grained felsic type. The mafic soil component is representative of widespread martian soils and is similar in composition to the martian dust. It possesses a ubiquitous hydrogen signature in ChemCam spectra, corresponding to the hydration of the amorphous phases found in the soil by the CheMin instrument. This hydration likely accounts for an important fraction of the global hydration of the surface seen by previous orbital measurements. ChemCam analyses did not reveal any significant exchange of water vapor between the regolith and the atmosphere. These observations provide constraints on the nature of the amorphous phases and their hydration.

Place, publisher, year, edition, pages
2013. Vol. 341, no 6153, article id 1238670
National Category
Aerospace Engineering
Research subject
Atmospheric science
Identifiers
URN: urn:nbn:se:ltu:diva-9829DOI: 10.1126/science.1238670ISI: 000324894600001PubMedID: 24072924Scopus ID: 2-s2.0-84885601135Local ID: 8840c365-73a8-432b-b101-627eddf23c14OAI: oai:DiVA.org:ltu-9829DiVA, id: diva2:982767
Note

Upprättat; 2013; Bibliografisk uppgift: Javier Martín-Torres ingår i the MSL Science Team.; 20150331 (ninhul)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2019-05-14Bibliographically approved

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