globalchange  > 科学计划与规划
DOI: 10.1002/2015GL066675
论文题名:
A global Mars dust composition refined by the Alpha-Particle X-ray Spectrometer in Gale Crater
作者: Berger J.A.; Schmidt M.E.; Gellert R.; Campbell J.L.; King P.L.; Flemming R.L.; Ming D.W.; Clark B.C.; Pradler I.; Vanbommel S.J.V.; Minitti M.E.; Fairén A.G.; Boyd N.I.; Thompson L.M.; Perrett G.M.; Elliott B.E.; Desouza E.
刊名: Geophysical Research Letters
ISSN: 0094-9520
EISSN: 1944-9251
出版年: 2016
卷: 43, 期:1
起始页码: 67
结束页码: 75
语种: 英语
英文关键词: Mars dust ; Mars soil ; Mars surface S/Cl ; MSL APXS
Scopus关键词: Alpha particles ; Martian surface analysis ; Soils ; Spectrometers ; X ray spectrometers ; In compositions ; Mars dust ; Mars science laboratory ; Mars surfaces ; MSL APXS ; Oxide compositions ; Surface concentration ; X-ray amorphous ; Dust
英文摘要: Modern Martian dust is similar in composition to the global soil unit and bulk basaltic Mars crust, but it is enriched in S and Cl. The Alpha Particle X-ray Spectrometer (APXS) on the Mars Science Laboratory Curiosity rover analyzed air fall dust on the science observation tray (o-tray) in Gale Crater to determine dust oxide compositions. The o-tray dust has the highest concentrations of SO3 and Cl measured in Mars dust (SO3 8.3%; Cl 1.1 wt %). The molar S/Cl in the dust (3.35 ± 0.34) is consistent with previous studies of Martian dust and soils (S/Cl = 3.7 ± 0.7). Fe is also elevated ~25% over average Mars soils and the bulk crust. These enrichments link air fall dust with the S-, Cl-, and Fe-rich X-ray amorphous component of Gale Crater soil. Dust and soil have the same S/Cl, constraining the surface concentrations of S and Cl on a global scale. © 2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956595227&doi=10.1002%2f2015GL066675&partnerID=40&md5=62bf930f646065fb26b8da0fdeecaa89
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10483
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Department of Earth Sciences, University of Western Ontario, London, ON, Canada

Recommended Citation:
Berger J.A.,Schmidt M.E.,Gellert R.,et al. A global Mars dust composition refined by the Alpha-Particle X-ray Spectrometer in Gale Crater[J]. Geophysical Research Letters,2016-01-01,43(1).
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