Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL086136 |
Periodical Dipolarization Processes in Earth's Magnetotail | |
Huang, S. Y.1,2; Jiang, K.1; Fu, H. S.3; Yuan, Z. G.1; Deng, X. H.4; Li, H. M.5; Xu, S. B.1; He, L. H.1; Wei, Y. Y.1; Zhang, J.1; Zhang, Z. H.1 | |
2019-12-12 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:23页码:13640-13648 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Using high-resolution data of Magnetospheric Multiscale mission, we observed a gradual but periodical dipolarization process (DPs) in the Earth's magnetotail for the first time. These sub-DPs, characterized by increase of B-z component and magnetic magnitude B-t, have a period of similar to 16 s. The electrons have a cigar distribution in the first three sub-DPs but have a pancake distribution in the last sub-DP, which excites two oppositely propagating whistler waves. At the trailing boundary of the last sub-DP, B-z decreases sharply. Meanwhile, strong tailward and duskward plasma flow, intense current, ion and electron demagnetization, and positive energy conversion from the fields to the plasmas are observed at this boundary. By comparing the motion of this boundary with the plasma flow, we infer that the flow rebounds in longer period of the last DP and causes perpendicular electron acceleration. The periodical sub-DPs and kinetic effects on the DP could improve our understanding of substorm and the magnetotail dynamics. |
英文关键词 | periodical dipolarization process substorm electron acceleration kinetic effect whistler wave |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000502290000001 |
WOS关键词 | ROLLING-PIN DISTRIBUTION ; ELECTRON ACCELERATION ; RECONNECTION ONSET ; WAVES ; FRONTS ; CLUSTER ; MOTION ; FLOWS |
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/225188 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Wuhan Univ, Sch Elect Informat, Wuhan, Hubei, Peoples R China; 2.Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai, Peoples R China; 3.Beihang Univ, Sch Space & Environm, Beijing, Peoples R China; 4.Nanchang Univ, Inst Space Sci & Technol, Nanchang, Jiangxi, Peoples R China; 5.Xidian Univ, Sch Phys & Optoelect Engn, Xian, Shaanxi, Peoples R China |
推荐引用方式 GB/T 7714 | Huang, S. Y.,Jiang, K.,Fu, H. S.,et al. Periodical Dipolarization Processes in Earth's Magnetotail[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(23):13640-13648. |
APA | Huang, S. Y..,Jiang, K..,Fu, H. S..,Yuan, Z. G..,Deng, X. H..,...&Zhang, Z. H..(2019).Periodical Dipolarization Processes in Earth's Magnetotail.GEOPHYSICAL RESEARCH LETTERS,46(23),13640-13648. |
MLA | Huang, S. Y.,et al."Periodical Dipolarization Processes in Earth's Magnetotail".GEOPHYSICAL RESEARCH LETTERS 46.23(2019):13640-13648. |
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