DOI: 10.1002/2013GL057840
论文题名: Isotopes of nitrogen on Mars: Atmospheric measurements by Curiosity's mass spectrometer
作者: Wong M.H. ; Atreya S.K. ; Mahaffy P.N. ; Franz H.B. ; Malespin C. ; Trainer M.G. ; Stern J.C. ; Conrad P.G. ; Manning H.L.K. ; Pepin R.O. ; Becker R.H. ; McKay C.P. ; Owen T.C. ; Navarro-González R. ; Jones J.H. ; Jakosky B.M. ; Steele A.
刊名: Geophysical Research Letters
ISSN: 0094-8340
EISSN: 1944-8071
出版年: 2013
卷: 40, 期: 23 起始页码: 6033
结束页码: 6037
语种: 英语
英文关键词: Mars
; Mars meteorites
; nitrogen isotopes
; planetary atmospheres
Scopus关键词: Atmospheric components
; Atmospheric measurement
; Atmospheric samples
; Mars
; Mars science laboratory
; Nitrogen isotopes
; Planetary atmosphere
; Quadrupole mass spectrometer
; Atmospheric composition
; Carbon dioxide
; Ionization of gases
; Isotopes
; Martian surface analysis
; Mass spectrometers
; Meteorites
; Sols
; Nitrogen
; chemical composition
; Mars
; Martian atmosphere
; mass spectrometry
; meteorite
; nitrogen isotope
英文摘要: The Sample Analysis at Mars (SAM) instrument suite on the Mars Science Laboratory (MSL) measured a Mars atmospheric14N/15N ratio of 173 ± 11 on sol 341 of the mission, agreeing with Viking's measurement of 168 ± 17. The MSL/SAM value was based on Quadrupole Mass Spectrometer measurements of an enriched atmospheric sample, with CO2 and H 2O removed. Doubly ionized nitrogen data at m/z 14 and 14.5 had the highest signal/background ratio, with results confirmed by m/z 28 and 29 data. Gases in SNC meteorite glasses have been interpreted as mixtures containing a Martian atmospheric component, based partly on distinctive14N/ 15N and40Ar/14N ratios. Recent MSL/SAM measurements of the40Ar/14N ratio (0.51 ± 0.01) are incompatible with the Viking ratio (0.35 ± 0.08). The meteorite mixing line is more consistent with the atmospheric composition measured by Viking than by MSL. Key Points MSL's more precise results on Mars nitrogen isotopes agree with Viking Atmospheric gas in Mars meteorites differs from MSL atmospheric composition Geologically rapid change in atmospheric composition is a possible explanation © 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-s2.0-84889579620&doi=10.1002%2f2013GL057840&partnerID=40&md5=a45179b15b085d2b3d13e52a5d701a3c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5604
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, Space Research Bldg., 2455 Hayward St., Ann Arbor, MI 48109-2143, United States
Recommended Citation:
Wong M.H.,Atreya S.K.,Mahaffy P.N.,et al. Isotopes of nitrogen on Mars: Atmospheric measurements by Curiosity's mass spectrometer[J]. Geophysical Research Letters,2013-01-01,40(23).