DOI: 10.1016/j.pss.2020.104844
论文题名: Influence of the IMF Bx on the geometry of the bow shock and magnetopause
作者: Wang J. ; Huang C. ; Ge Y.S. ; Du A. ; Feng X.
刊名: Planetary and Space Science
ISSN: 320633
出版年: 2020
卷: 182 语种: 英语
Scopus关键词: Magnetohydrodynamics
; Magnetopause
; Interplanetary magnetic fields
; Magnetic pressure
; Magnetohydrodynamic simulations
; Meridian planes
; North-south asymmetry
; Northern Hemispheres
; Quantitative effects
; Solar wind-magnetosphere interactions
; Plasma shock waves
英文摘要: The solar wind-magnetosphere interaction is still an open problem under the influences of the Bx component of the interplanetary magnetic field (IMF). We have performed a series of 3D global magnetohydrodynamic simulations and demonstrated the quantitative effects of the IMF Bx component on the locations and shapes of the bow shock and magnetopause during northward IMF. The IMF Bx can greatly change the configurations of the bow shock and the magnetosphere, and bring north-south asymmetries in the noon-midnight meridian plane. The larger magnetosonic Mach number in the northern hemisphere makes the northern part of the bow shock closer to the Earth, while the situation is opposite in the south. In the downstream of the southern bow shock, the magnetic fields get greatly compressed in the southern magnetosheath, leading to a drastic increased magnetic pressure above the magnetopause. As a result, the southern part of the magnetopause becomes closer to the earth while its northern part has a little change. Moreover, it is found that the subsolar points of the bow shock and magnetopause are not sensitive to the IMF Bx during northward IMF. © 2020 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159087
Appears in Collections: 气候变化与战略
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作者单位: School of Systems Science, Beijing Normal University, Beijing, 100875, China; Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China; SIGMA Weather Group, State Key Laboratory for Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China
Recommended Citation:
Wang J.,Huang C.,Ge Y.S.,et al. Influence of the IMF Bx on the geometry of the bow shock and magnetopause[J]. Planetary and Space Science,2020-01-01,182