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DOI | 10.1029/2019GL083595 |
Influence of Extreme Ultraviolet Irradiance Variations on the Precipitating Ion Flux From MAVEN Observations | |
Martinez, A.1; Leblanc, F.1; Chaufray, J. Y.1,2; Modolo, R.2; Witasse, O.3; Dong, Y.4; Hara, T.5; Halekas, J.6; Lillis, R.5; McFadden, J.5; Eparvier, F.6; Leclercq, L.7; Luhmann, J.5; Curry, S.5; Titov, D.3; Jakosky, B.6 | |
2019-07-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:13页码:7761-7768 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Netherlands; USA |
英文摘要 | We study the influence of the solar extreme ultraviolet (EUV) flux intensity on the precipitating ion fluxes as seen by the Solar Wind Ion Analyzer, an energy and angular ion spectrometer aboard the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft. We defined three periods with significantly different EUV flux intensity (1.6 and 3.2 times the lowest EUV intensity) and compare the precipitating ion flux measured by MAVEN/Solar Wind Ion Analyzer during each period. At low energy [30-650] eV, we find that the median (average) precipitating ion flux during the medium and low EUV periods are, respectively, 1.7 (2.1) and 3 (3.5) times more intense than the flux during the high EUV period. At high energy [650-25,000] eV, a similar trend in the intensity of the precipitating ion flux is observed but with an increase by 50% (46%) and 70% (79%), respectively. A larger EUV flux does therefore not seem to favor heavy ion precipitation into Mars's atmosphere, contrary to modeling prediction and overall expectations. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000476960100078 |
WOS关键词 | MARTIAN UPPER-ATMOSPHERE ; MARS GLOBAL SURVEYOR ; SOLAR-WIND ; SEASONAL VARIABILITY ; ESCAPE ; HYDROGEN ; DEPENDENCE ; EXOSPHERE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/185097 |
专题 | 气候变化 |
作者单位 | 1.Sorbonne Univ, CNRS, UVSQ, LATMOS,IPSL, Paris, France; 2.Sorbonne Univ, UVSQ Univ Paris Saclay, CNRS, LATMOS,IPSL, Guyancourt, France; 3.European Space Agcy, Estec, Noordwijk, Netherlands; 4.Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA; 5.Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA; 6.Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA; 7.Univ Virginia, Dept Mat Sci & Engn, Charlottesville, VA USA |
推荐引用方式 GB/T 7714 | Martinez, A.,Leblanc, F.,Chaufray, J. Y.,et al. Influence of Extreme Ultraviolet Irradiance Variations on the Precipitating Ion Flux From MAVEN Observations[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(13):7761-7768. |
APA | Martinez, A..,Leblanc, F..,Chaufray, J. Y..,Modolo, R..,Witasse, O..,...&Jakosky, B..(2019).Influence of Extreme Ultraviolet Irradiance Variations on the Precipitating Ion Flux From MAVEN Observations.GEOPHYSICAL RESEARCH LETTERS,46(13),7761-7768. |
MLA | Martinez, A.,et al."Influence of Extreme Ultraviolet Irradiance Variations on the Precipitating Ion Flux From MAVEN Observations".GEOPHYSICAL RESEARCH LETTERS 46.13(2019):7761-7768. |
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