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A statistical study on the shape and position of the magnetotail neutral sheet

文献类型：期刊论文

作者Xiao, Sudong1; Zhang, Tielong1,2; Ge, Yasong3; Wang, Guoqiang1; Baumjohann, Wolfgang2; Nakamura, Rumi2
刊名ANNALES GEOPHYSICAE
出版日期2016
卷号34期号:2页码:303-311
关键词Magnetospheric Physics Magnetotail
DOI10.5194/angeo-34-303-2016
文献子类Article
英文摘要We study the average shape and position of the magnetotail neutral sheet based on magnetic field data obtained by Cluster, Geotail, TC-1, and THEMIS from the years 1995 to 2013. All data in the aberrated GSM (geocentric solar magnetospheric) coordinate system are normalized to the same solar wind pressure 2 nPa and downtail distance X similar to -20 R-E. Our results show characteristics of the neutral sheet, as follows. (1) The neutral sheet assumes a greater degree of curve in the YZ cross section when the dipole tilt increases, the Earth dipole tilt angle affects the neutral sheet configuration not only in the YZ cross section but also in the XY cross section, and the neutral sheet assumes a more significant degree of tilt in the XY cross section when the dipole tilt increases. (2) Counterclockwise twisting of the neutral sheet with 3.10 degrees is observed, looking along the downtail direction, for the positive interplanetary magnetic field (IMF) B-Y with a value of 3 to 8 nT, and clockwise twisting of the neutral sheet with 3.37 degrees for the negative IMF B-Y with a value of -8 to -3 nT, and a northward IMF can result in a greater twisting of the near-tail neutral sheet than southward. The above results can be a reference to the neutral sheet model. Our large database also shows that the displaced ellipse model is effective to study the average shape of the neutral sheet with proper parameters when the dipole tilt angle is larger (less) than 10 degrees (10 degrees).
WOS关键词MAGNETIC-FIELD ; PERFORMANCE ; GEOTAIL ; TAIL
WOS研究方向Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:000373716600013
资助机构NSFC in China(41574173 ; NSFC in China(41574173 ; EU - ECLAT(263325) ; EU - ECLAT(263325) ; Austrian Science Fund in Austria(FWF P23862-N16 ; Austrian Science Fund in Austria(FWF P23862-N16 ; 41421063 ; 41421063 ; P24740-N27) ; P24740-N27) ; 41474144) ; 41474144) ; NSFC in China(41574173 ; NSFC in China(41574173 ; EU - ECLAT(263325) ; EU - ECLAT(263325) ; Austrian Science Fund in Austria(FWF P23862-N16 ; Austrian Science Fund in Austria(FWF P23862-N16 ; 41421063 ; 41421063 ; P24740-N27) ; P24740-N27) ; 41474144) ; 41474144)
源URL[http://ir.iggcas.ac.cn/handle/132A11/53450]  
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
作者单位1.Univ Sci & Technol China, CAS Key Lab Geospace Environm, Hefei 230026, Peoples R China
2.Austrian Acad Sci, Space Res Inst, A-8010 Graz, Austria
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Xiao, Sudong,Zhang, Tielong,Ge, Yasong,et al. A statistical study on the shape and position of the magnetotail neutral sheet[J]. ANNALES GEOPHYSICAE,2016,34(2):303-311.
APA Xiao, Sudong,Zhang, Tielong,Ge, Yasong,Wang, Guoqiang,Baumjohann, Wolfgang,&Nakamura, Rumi.(2016).A statistical study on the shape and position of the magnetotail neutral sheet.ANNALES GEOPHYSICAE,34(2),303-311.
MLA Xiao, Sudong,et al."A statistical study on the shape and position of the magnetotail neutral sheet".ANNALES GEOPHYSICAE 34.2(2016):303-311.

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来源：地质与地球物理研究所

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