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DOI | 10.1029/2018GL079454 |
H+/O+ Escape Rate Ratio in the Venus Magnetotail and its Dependence on the Solar Cycle | |
Persson, M.1,2; Futaana, Y.1; Fedorov, A.3; Nilsson, H.1; Hamrin, M.2; Barabash, S.1 | |
2018-10-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:20页码:10805-10811 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden; France |
英文摘要 | A fundamental question for the atmospheric evolution of Venus is how much water-related material escapes from Venus to space. In this study, we calculate the nonthermal escape of H+ and O+ ions through the Venusian magnetotail and its dependence on the solar cycle. We separate 8 years of data obtained from the ion mass analyzer on Venus Express into solar minimum and maximum. The average escape of H+ decreased from 7.6.10(24) (solar minimum) to 2.1.10(24) s(-1) (solar maximum), while a smaller decrease was found for O+: 2.9.10(24) to 2.0.10(24) s(-1). As a result, the H+/O+ flux ratio decreases from 2.6 to 1.1. This implies that the escape of hydrogen and oxygen could have been below the stoichiometric ratio of water for Venus in its early history under the more active Sun. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000451510500002 |
WOS关键词 | PLASMA ; WATER ; WIND ; HYDROGEN ; EVOLUTION ; HISTORY ; FLOW ; MARS |
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/26524 |
专题 | 气候变化 |
作者单位 | 1.Swedish Inst Space Phys, Kiruna, Sweden; 2.Umea Univ, Dept Phys, Umea, Sweden; 3.CNRS, IRAP, Toulouse, France |
推荐引用方式 GB/T 7714 | Persson, M.,Futaana, Y.,Fedorov, A.,et al. H+/O+ Escape Rate Ratio in the Venus Magnetotail and its Dependence on the Solar Cycle[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(20):10805-10811. |
APA | Persson, M.,Futaana, Y.,Fedorov, A.,Nilsson, H.,Hamrin, M.,&Barabash, S..(2018).H+/O+ Escape Rate Ratio in the Venus Magnetotail and its Dependence on the Solar Cycle.GEOPHYSICAL RESEARCH LETTERS,45(20),10805-10811. |
MLA | Persson, M.,et al."H+/O+ Escape Rate Ratio in the Venus Magnetotail and its Dependence on the Solar Cycle".GEOPHYSICAL RESEARCH LETTERS 45.20(2018):10805-10811. |
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