globalchange  > 气候减缓与适应
DOI: 10.1002/2013GL057763
论文题名:
Primordial argon isotope fractionation in the atmosphere of Mars measured by the SAM instrument on Curiosity and implications for atmospheric loss
作者: Atreya S.K.; Trainer M.G.; Franz H.B.; Wong M.H.; Manning H.L.K.; Malespin C.A.; Mahaffy P.R.; Conrad P.G.; Brunner A.E.; Leshin L.A.; Jones J.H.; Webster C.R.; Owen T.C.; Pepin R.O.; Navarro-González R.
刊名: Geophysical Research Letters
ISSN: 0094-8420
EISSN: 1944-8151
出版年: 2013
卷: 40, 期:21
起始页码: 5605
结束页码: 5609
语种: 英语
英文关键词: argon isotopes ; atmospheric loss ; habitability ; Mars ; planetary atmospheres ; solar system
Scopus关键词: Argon isotopes ; habitability ; High-precision measurement ; Isotopic fractionations ; Mars ; Martian atmospheres ; Planetary atmosphere ; Quadrupole mass spectrometer ; Fractionation ; Meteorites ; Solar system ; Isotopes ; argon isotope ; hydrodynamics ; instrumentation ; isotopic fractionation ; isotopic ratio ; Mars ; Martian atmosphere ; meteorite
英文摘要: The quadrupole mass spectrometer of the Sample Analysis at Mars (SAM) instrument on Curiosity rover has made the first high-precision measurement of the nonradiogenic argon isotope ratio in the atmosphere of Mars. The resulting value of 36Ar/38Ar = 4.2 ± 0.1 is highly significant for it provides excellent evidence that "Mars" meteorites are indeed of Martian origin, and it points to a significant loss of argon of at least 50% and perhaps as high as 85-95% from the atmosphere of Mars in the past 4 billion years. Taken together with the isotopic fractionations in N, C, H, and O measured by SAM, these results imply a substantial loss of atmosphere from Mars in the posthydrodynamic escape phase. Key Points First high-precision measurement of primordial argon isotopes in Martian air This measurement definitively ties the"martian" meteorites to Mars" Requires massive loss of Martian atmosphere after the hydrodynamic escape phase © 2013 The Authors. Geophysical Research Letters published by Wiley on behalf of the American Geophysical Union.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887133112&doi=10.1002%2f2013GL057763&partnerID=40&md5=cccc88c715648aba7feda66f93603f1b
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被引频次[WOS]:64   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5684
Appears in Collections:气候减缓与适应

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作者单位: Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI 48109-2143, United States

Recommended Citation:
Atreya S.K.,Trainer M.G.,Franz H.B.,et al. Primordial argon isotope fractionation in the atmosphere of Mars measured by the SAM instrument on Curiosity and implications for atmospheric loss[J]. Geophysical Research Letters,2013-01-01,40(21).
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