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Martian Eolian Dust Probed by ChemCam
Université de Toulouse, Toulouse, France.ORCID iD: 0000-0001-9082-4457
Université de Toulouse, Toulouse, France.ORCID iD: 0000-0001-7823-7794
Université de Toulouse,Toulouse, France.ORCID iD: 0000-0002-0703-3951
Université de Nantes, Nantes, France.ORCID iD: 0000-0002-0022-0631
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2018 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 45, no 20, p. 10968-10977Article in journal (Refereed) Published
Abstract [en]

The ubiquitous eolian dust on Mars plays important roles in the current sedimentary and atmospheric processes of the planet. The ChemCam instrument retrieves a consistent eolian dust composition at the submillimeter scale from every first laser shot on Mars targets. Its composition presents significant differences with the Aeolis Palus soils and the Bagnold dunes as it contains lower CaO and higher SiO2. The dust FeO and TiO2contents are also higher, probably associated with nanophase oxide components. The dust spectra show the presence of volatile elements (S and Cl), and the hydrogen content is similar to Bagnold sands but lower than Aeolis Palus soils. Consequently, the dust may be a contributor to the amorphous component of soils, but differences in composition indicate that the two materials are not equivalent.

Place, publisher, year, edition, pages
John Wiley & Sons, 2018. Vol. 45, no 20, p. 10968-10977
Keywords [en]
Mars, dust, ChemCam
National Category
Aerospace Engineering
Research subject
Atmospheric science
Identifiers
URN: urn:nbn:se:ltu:diva-71898DOI: 10.1029/2018GL079210ISI: 000451510500020Scopus ID: 2-s2.0-85054722874OAI: oai:DiVA.org:ltu-71898DiVA, id: diva2:1268289
Note

Validerad;2018;Nivå 2;2018-12-05 (johcin)

Available from: 2018-12-05 Created: 2018-12-05 Last updated: 2019-01-14Bibliographically approved

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Martin-Torres, JavierZorzano Mier, María-Paz

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