Kelvin–Helmholtz Instability at Mars: In Situ Observations and Kinetic Simulations
文献类型：期刊论文
| 作者 | Wang,Lei1,2,3; Huang,Can1,3; Du,Aimin1,3; Ge,Yasong1,3; Chen,Guo1,3; Yang,Zhongwei2; Li,Songyan1,3; Zhang,Kuixiang1,3 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2023-04-01 |
| 卷号 | 947期号:2 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/acc655 |
| 英文摘要 | Abstract Kelvin–Helmholtz (K-H) instability is a fundamental boundary instability between two fluids with different speeds, exchanging the mass, momentum, and energy across the boundary. Although the K-H instability has been suggested to play a critical role in atmospheric ion loss on Mars, the knowledge about its formation and evolution is still poor, due to the limitation of spacecraft missions and a dearth of dedicated simulation codes. In this study, we combine observations from the Mars Atmosphere and Volatile EvolutioN mission and global 3D kinetic simulations to investigate the solar wind–Mars interaction. For the first time, it is found that K-H waves prominently appear in the ?E hemisphere, which is attributed to the stronger proton velocity shear therein associated with the asymmetric diamagnetic drift motion of protons. The K-H instability is mainly excited in the ?E hemisphere and propagates downstream along the boundary, with the waves also able to be generated near the subsolar point. The K-H waves produce plasma clouds with a net oxygen ion escape rate of about 1.5 × 1024 s?1, contributing to almost half of the global loss on present-day Mars. This heavy ion escape pattern associated with K-H instability is cyclic and could occur on other nonmagnetized planets, potentially influencing planetary atmosphere evolution and habitability. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:APJ_947_2_51 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/110546]  |
| 专题 | 地质与地球物理研究所_深部资源勘探装备研发 |
| 通讯作者 | Huang,Can; Du,Aimin; Ge,Yasong; Chen,Guo; Li,Songyan; Zhang,Kuixiang |
| 作者单位 | 1.College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, People's Republic of China 2.State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, People's Republic of China 3.CAS Engineering Laboratory for Deep Resources Equipment and Technology, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, People's Republic of China; huangcan@mail.iggcas.ac.cn |
| 推荐引用方式 GB/T 7714 | Wang,Lei,Huang,Can,Du,Aimin,et al. Kelvin–Helmholtz Instability at Mars: In Situ Observations and Kinetic Simulations[J]. The Astrophysical Journal,2023,947(2). |
| APA | Wang,Lei.,Huang,Can.,Du,Aimin.,Ge,Yasong.,Chen,Guo.,...&Zhang,Kuixiang.(2023).Kelvin–Helmholtz Instability at Mars: In Situ Observations and Kinetic Simulations.The Astrophysical Journal,947(2). |
| MLA | Wang,Lei,et al."Kelvin–Helmholtz Instability at Mars: In Situ Observations and Kinetic Simulations".The Astrophysical Journal 947.2(2023). |
入库方式： OAI收割
来源：地质与地球物理研究所
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