Statistical Study of Small-scale Magnetic Holes in the Upstream Regime of the Martian Bow Shock
文献类型：期刊论文
| 作者 | Wang, G. Q.2; Volwerk, M.3; Du, A. M.1; Xiao, S. D.2; Wu, M. Y.2; Chen, Y. Q.2; Zhang, T. L.2,3 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2021-11-01 |
| 卷号 | 921期号:2页码:7 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ac1c07 |
| 英文摘要 | Small-scale magnetic holes (SSMHs) are frequently observed in the solar wind at 1 au, as well as the terrestrial current sheet and magnetosheath. These kinetic-size structures play an important role in energy dissipation and particle transportation. Here, we report the existence of SSMHs in the upstream regime of the Martian bow shock and statistically investigate these SSMHs based on 5 yr observations of the Mars Atmosphere and Volatile EvolutioN spacecraft. A total of 549 SSMHs are found, and their durations and sizes obey the lognormal distribution. The median duration is similar to 0.46 s, and the median size is similar to 2 ion inertial lengths. We regard an isolated SSMH or a train of SSMHs as a SSMH event. The average occurrence rate of the SSMH events is similar to 0.6 event per day. The occurrence rate is much larger in the region belonging to the ion foreshock on average, suggesting that the ion foreshock is an important source of SSMHs. The occurrence of the SSMH events tends to be larger when the ion number density and the interplanetary magnetic field (IMF) strength are larger, indicating that the generation of SSMHs might be associated with ions and the IMF strength. Although their generation mechanism is still unclear, the finding of the link between the occurrence rate of the SSMH events and ion number density, as well as the IMF strength, might provide a clue to further reveal the generation mechanism of SSMHs in the solar wind or planetary foreshock. |
| WOS关键词 | MIRROR-MODE STRUCTURES ; SOLAR-WIND ; 1ST OBSERVATIONS ; MMS OBSERVATIONS ; WAVES ; FIELD |
| 资助项目 | NSFC[41804157] ; NSFC[41774171] ; NSFC[41974205] ; NSFC[41774167] ; NSFC[41904156] ; Macau foundation ; pre-research Project on Civil Aerospace Technologies - CNSA[D020103] ; 111 project[B18017] ; CAS Center for Excellence in Comparative Planetology ; NASA Mars Exploration Program |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000716750800001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | NSFC ; Macau foundation ; pre-research Project on Civil Aerospace Technologies - CNSA ; 111 project ; CAS Center for Excellence in Comparative Planetology ; NASA Mars Exploration Program ; NSFC ; Macau foundation ; pre-research Project on Civil Aerospace Technologies - CNSA ; 111 project ; CAS Center for Excellence in Comparative Planetology ; NASA Mars Exploration Program ; NSFC ; Macau foundation ; pre-research Project on Civil Aerospace Technologies - CNSA ; 111 project ; CAS Center for Excellence in Comparative Planetology ; NASA Mars Exploration Program ; NSFC ; Macau foundation ; pre-research Project on Civil Aerospace Technologies - CNSA ; 111 project ; CAS Center for Excellence in Comparative Planetology ; NASA Mars Exploration Program |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/102953]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 通讯作者 | Wang, G. Q. |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China 2.Harbin Inst Technol, Inst Space Sci & Appl Technol, Shenzhen, Peoples R China 3.Austrian Acad Sci, Space Res Inst, Graz, Austria |
| 推荐引用方式 GB/T 7714 | Wang, G. Q.,Volwerk, M.,Du, A. M.,et al. Statistical Study of Small-scale Magnetic Holes in the Upstream Regime of the Martian Bow Shock[J]. ASTROPHYSICAL JOURNAL,2021,921(2):7. |
| APA | Wang, G. Q..,Volwerk, M..,Du, A. M..,Xiao, S. D..,Wu, M. Y..,...&Zhang, T. L..(2021).Statistical Study of Small-scale Magnetic Holes in the Upstream Regime of the Martian Bow Shock.ASTROPHYSICAL JOURNAL,921(2),7. |
| MLA | Wang, G. Q.,et al."Statistical Study of Small-scale Magnetic Holes in the Upstream Regime of the Martian Bow Shock".ASTROPHYSICAL JOURNAL 921.2(2021):7. |
入库方式： OAI收割
来源：地质与地球物理研究所
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