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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, Barbara6; Russell, C. T.7
2019-06-16
Source PublicationGEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
Volume46Issue:11Pages:5746-5753
Corresponding AuthorDunlop, M. W.(malcolm.dunlop@stfc.ac.uk)
AbstractThe 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.
Keywordmagnetopause boundary layer magnetic reconnection magnetic topologies electron distribution
DOI10.1029/2019GL081998
WOS KeywordMAGNETOPAUSE RECONNECTION ; DAYSIDE MAGNETOPAUSE ; EARTHS MAGNETOSPHERE ; NORTHWARD IMF ; MAGNETOSHEATH ; TRANSPORT ; PLASMA ; FIELD ; LOCATION ; EDGE
Indexed BySCI
Language英语
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000477616200013
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/27079
Collection中国科学院紫金山天文台
Corresponding AuthorDunlop, M. W.
Affiliation1.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
Recommended Citation
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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