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

doi:10.1029/2019GL081998

	Electron Sublayers and the Associated Magnetic Topologies in the Inner Low-Latitude Boundary Layer
	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, Barbara 6; Russell, C. T.7
刊名	GEOPHYSICAL RESEARCH LETTERS
	2019-06-16
卷号	46 期号:11 页码:5746-5753
关键词	magnetopause boundary layer magnetic reconnection magnetic topologies electron distribution
ISSN号	0094-8276
DOI	10.1029/2019GL081998
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
内容类型	期刊论文
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.