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Asymmetric Transport of the Earth's Polar Outflows by the Interplanetary Magnetic Field

文献类型：期刊论文

作者Wang, Juan1,2,3; Huang, Can1; Ge, Yasong S.1; Dui, Aimin1; Feng, Xueshang4,5; Li, Kun6
刊名ASTROPHYSICAL JOURNAL LETTERS
出版日期2019-08-20
卷号881期号:2页码:6
关键词Earth magnetic fields magnetohydrodynamics (MHD) plasmas solar-terrestrial relations solar wind
ISSN号2041-8205
DOI10.3847/2041-8213/ab385d
英文摘要The polar outflows, as an important plasma source of the Earth's magnetosphere, usually exhibit significant north- south asymmetries, which can strongly affect the plasma distributions in the magnetotail lobe and perhaps contribute to the substorm triggering. But the mechanism of the asymmetric transport of these outflows is still unclear. In this Letter, 3D global magnetohydrodynamic (MHD) simulations are performed to investigate the development of the polar outflows after their escapes from the inner boundary under influences of the interplanetary magnetic field (IMF) B-x. It is found that the velocity of northern polar outflows is much stronger than the south. We suggest that the IMF B-x causes the north-south asymmetries in the magnetospheric configuration, and subsequently, great differences of the force and mass distributions appear between the two hemispheres, which lead to the significant north-south asymmetries in the transport of the polar outflows. We also discuss the differences in the acceleration mechanisms of the polar outflows between the northward and southward IMF cases.
WOS关键词IONOSPHERIC OUTFLOW ; WIND ; PLASMA ; MAGNETOSPHERE ; ACCELERATION ; SIMULATION ; IONS
资助项目National Natural Science Foundation of China[41604144] ; National Natural Science Foundation of China[41531073] ; National Natural Science Foundation of China[41474144] ; National Natural Science Foundation of China[41674168] ; National Natural Science Foundation of China[41774176] ; National Natural Science Foundation of China[41704164] ; China Postdoctoral Science Foundation[2018M630198] ; Specialized Research Fund for State Key Laboratories
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000482015200003
出版者IOP PUBLISHING LTD
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories
源URL[http://ir.iggcas.ac.cn/handle/132A11/92980]  
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
通讯作者Huang, Can
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Beijing Normal Univ, Sch Syst Sci, Beijing, Peoples R China
3.Chinese Acad Sci, State Key Lab Space Weather, Beijing, Peoples R China
4.Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, SIGMA Weather Grp, Beijing, Peoples R China
5.Harbin Inst Technol, Inst Space Sci & Appl Technol, Lab Space Weather Storms, Shenzhen, Peoples R China
6.Sun Yat Sen Univ, Sch Atmospher Sci, Zhuhai, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Juan,Huang, Can,Ge, Yasong S.,et al. Asymmetric Transport of the Earth's Polar Outflows by the Interplanetary Magnetic Field[J]. ASTROPHYSICAL JOURNAL LETTERS,2019,881(2):6.
APA Wang, Juan,Huang, Can,Ge, Yasong S.,Dui, Aimin,Feng, Xueshang,&Li, Kun.(2019).Asymmetric Transport of the Earth's Polar Outflows by the Interplanetary Magnetic Field.ASTROPHYSICAL JOURNAL LETTERS,881(2),6.
MLA Wang, Juan,et al."Asymmetric Transport of the Earth's Polar Outflows by the Interplanetary Magnetic Field".ASTROPHYSICAL JOURNAL LETTERS 881.2(2019):6.

入库方式： OAI收割

来源：地质与地球物理研究所

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