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Electron Sublayers and the Associated Magnetic Topologies in the Inner Low-Latitude Boundary Layer

文献类型：期刊论文

作者Dong, X. -C.1; Dunlop, M. W.1,2; Trattner, K. J.3; Wang, T. -Y.2; Pu, Z. Y.4; Zhao, J. -S.5; Cao, J. -B.1; Giles, Barbara6; Russell, C. T.7
刊名GEOPHYSICAL RESEARCH LETTERS
出版日期2019-06-16
卷号46期号:11页码:5746-5753
ISSN号0094-8276
关键词magnetopause boundary layer magnetic reconnection magnetic topologies electron distribution
DOI10.1029/2019GL081998
通讯作者Dunlop, M. W.(malcolm.dunlop@stfc.ac.uk)
英文摘要The low-latitude boundary layer (LLBL) plays an important role as a transition layer in coupling the magnetosheath and magnetosphere. Using high-resolution Magnetospheric Multiscale data, we analyze the electron distributions in the inner region of the LLBL, during an active period of magnetic reconnection under southward interplanetary magnetic field. According to the measured electron energy anisotropy, we suggest that this inner LLBL can be divided into six sublayers corresponding to three types of magnetic field-line topologies: (1) open magnetic field line topology from magnetosheath to southern magnetosphere, (2) open magnetic field line topology from magnetosheath to northern magnetosphere, and (3) reclosed magnetic field line topology. These different scenarios indicate that magnetic reconnection occurs at both northern and southern locations of the spacecraft and thus suggest that magnetic reconnection was active simultaneously at high and low latitude on the magnetopause, equatorward of the cusps. These results provide evidence within the LLBL for such multiple X-line formation.
WOS关键词MAGNETOPAUSE RECONNECTION ; DAYSIDE MAGNETOPAUSE ; EARTHS MAGNETOSPHERE ; NORTHWARD IMF ; MAGNETOSHEATH ; TRANSPORT ; PLASMA ; FIELD ; LOCATION ; EDGE
WOS研究方向Geology
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:000477616200013
源URL[http://libir.pmo.ac.cn/handle/332002/27078]  
专题中国科学院紫金山天文台
通讯作者Dunlop, M. W.
作者单位1.Beihang Univ, Sch Space & Environm, Beijing, Peoples R China
2.STFC, RAL Space, Didcot, Oxon, England
3.Univ Colorado, LASP, Boulder, CO 80309 USA
4.Peking Univ, Sch Earth & Space Sci, Beijing, Peoples R China
5.Chinese Acad Sci, Purple Mt Observ, Key Lab Planetary Sci, Nanjing, Jiangsu, Peoples R China
6.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA
7.Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA
推荐引用方式
GB/T 7714		 Dong, X. -C.,Dunlop, M. W.,Trattner, K. J.,et al. Electron Sublayers and the Associated Magnetic Topologies in the Inner Low-Latitude Boundary Layer[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(11):5746-5753.
APA Dong, X. -C..,Dunlop, M. W..,Trattner, K. J..,Wang, T. -Y..,Pu, Z. Y..,...&Russell, C. T..(2019).Electron Sublayers and the Associated Magnetic Topologies in the Inner Low-Latitude Boundary Layer.GEOPHYSICAL RESEARCH LETTERS,46(11),5746-5753.
MLA Dong, X. -C.,et al."Electron Sublayers and the Associated Magnetic Topologies in the Inner Low-Latitude Boundary Layer".GEOPHYSICAL RESEARCH LETTERS 46.11(2019):5746-5753.

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