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Magnetosheath Reconnection Before Magnetopause Reconnection Driven by Interplanetary Tangential Discontinuity: A Three-Dimensional Global Hybrid Simulation With Oblique Interplanetary Magnetic Field

文献类型：期刊论文

作者Guo, Zhifang1,2; Lin, Yu3; Wang, Xueyi3; Du, Aimin1,2
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
出版日期2018-11-01
卷号123期号:11页码:9169-9186
ISSN号2169-9380
DOI10.1029/2018JA025679
英文摘要Terrestrial dayside dynamics associated with a southward turning, oblique interplanetary magnetic field (IMF) carried by an interplanetary tangential discontinuity (TD) is investigated by performing a three-dimensional global-scale hybrid simulation systematically for cases in which the incoming solar wind TD possesses various magnetic field rotation angles Delta Phi = 90 degrees to 180 degrees and half widths w = 2d(i0) to w = 30d(i0) where d(i0), is the ion inertial length in the solar wind. Overall, the TD is compressed while being transmitted into the magnetosheath, with different compression processes downstream of the quasi-parallel (Q-parallel to) and quasi-perpendicular (Q-perpendicular to) shocks. It is found that magnetosheath reconnection may take place downstream of both the Q-parallel to and Q-perpendicular to shocks due to interaction of the directional TD with the bow shock and magnetopause, but the existence of magnetosheath reconnection depends on w and Delta Phi. Magnetosheath flux ropes are formed through three-dimensional patchy reconnection in the thinned current sheet, with a longer rope lengths under a larger Delta Phi. There exists a dawn-dusk asymmetry in the spatial extent of the flux ropes, which becomes more significant as Delta Phi decreases. When Delta Phi decreases to 90 degrees, no reconnection flux ropes are found. Magnetopause reconnection is initiated when the magnetic fluxes with a southward turning IMF (on the sunward side) reach the magnetopause, and the magnetopause flux ropes can be mixed with the magnetosheath ones. Our simulation demonstrates that the effects of a southward turning of the IMF may not be a simple field direction change that leads to reconnection only at the magnetopause.
WOS关键词HOT FLOW ANOMALIES ; FLUX-TRANSFER EVENTS ; IN-SITU EVIDENCE ; BOW SHOCK ; DIRECTIONAL DISCONTINUITIES ; DIPOLARIZATION FRONTS ; ELECTRON ACCELERATION ; EARTHS MAGNETOPAUSE ; GENERATION ; DYNAMICS
资助项目National Basic Research Program of China[2014CB845903] ; DoE[DE-FOA-0001664] ; China Postdoctoral Science Foundation[2018M630198] ; National Science Foundation of China[41674168] ; National Science Foundation of China[41804160] ; National Science Foundation of China[41590851] ; [NASA-80NSSC17K0012] ; [NASA-NNX17AI47G]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000453227400019
出版者AMER GEOPHYSICAL UNION
资助机构National Basic Research Program of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Basic Research Program of China ; DoE ; DoE ; DoE ; DoE ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Basic Research Program of China ; DoE ; DoE ; DoE ; DoE ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Basic Research Program of China ; DoE ; DoE ; DoE ; DoE ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Basic Research Program of China ; DoE ; DoE ; DoE ; DoE ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/90284]  
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Lin, Yu
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China
3.Auburn Univ, Dept Phys, Auburn, AL 36849 USA
推荐引用方式
GB/T 7714		 Guo, Zhifang,Lin, Yu,Wang, Xueyi,et al. Magnetosheath Reconnection Before Magnetopause Reconnection Driven by Interplanetary Tangential Discontinuity: A Three-Dimensional Global Hybrid Simulation With Oblique Interplanetary Magnetic Field[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2018,123(11):9169-9186.
APA Guo, Zhifang,Lin, Yu,Wang, Xueyi,&Du, Aimin.(2018).Magnetosheath Reconnection Before Magnetopause Reconnection Driven by Interplanetary Tangential Discontinuity: A Three-Dimensional Global Hybrid Simulation With Oblique Interplanetary Magnetic Field.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,123(11),9169-9186.
MLA Guo, Zhifang,et al."Magnetosheath Reconnection Before Magnetopause Reconnection Driven by Interplanetary Tangential Discontinuity: A Three-Dimensional Global Hybrid Simulation With Oblique Interplanetary Magnetic Field".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 123.11(2018):9169-9186.

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来源：地质与地球物理研究所

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