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Effects of the interplanetary magnetic field clock angle on the shape of bow shock
Wang JiangYan; Huang ZhaoHui; Wang Chi; Liu ZiQian; Wang, JY (reprint author), Chinese Acad Sci, State Key Lab Space Weather, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China.
Department空间科学部
Source PublicationSCIENCE CHINA-EARTH SCIENCES
2015
Volume58Issue:7Pages:1228-1234
ISSN1674-7313
Language英语
KeywordImf Clock Angle Bow Shock Mhd Simulations
AbstractUsing the global magnetohydrodynamics (MHD) simulation model, we investigated the effects of the interplanetary magnetic field (IMF) clock angle on the shape of bow shock, including its rotational asymmetry and subsolar point. For general northward IMF (z component B-z > 0), the rotational symmetry of the bow shock is broken by the effects of fast magnetosonic Mach number (M-ms), and the cross-sectional line of the bow shock is an ellipse with the semi-major axis along the direction perpendicular to the IMF. The ratio or D-value between semi-major and semi-minor axis can be used to illustrate the extent of asymmetry of the bow shock. On the basis of the multiple parameters fitting, we obtain the changing relationship of both semi-axes with the clock angle and the distance away from the Earth. For general southward IMF (B-z < 0), the cross sectional line of the bow shock is highly asymmetrical under the multiple effects of magnetopause and M-ms. The effects of IMF clock angle on subsolar point depend mainly on the changing subsolar point of magnetopause as an obstacle. The distance of subsolar point of bow shock from the Earth increases with the increasing IMF clock angle for B-z > 0, and decreases with the increasing IMF clock angle for B-z < 0.
Indexed BySCI ; EI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/4621
Collection空间科学部
Corresponding AuthorWang, JY (reprint author), Chinese Acad Sci, State Key Lab Space Weather, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Wang JiangYan,Huang ZhaoHui,Wang Chi,et al. Effects of the interplanetary magnetic field clock angle on the shape of bow shock[J]. SCIENCE CHINA-EARTH SCIENCES,2015,58(7):1228-1234.
APA Wang JiangYan,Huang ZhaoHui,Wang Chi,Liu ZiQian,&Wang, JY .(2015).Effects of the interplanetary magnetic field clock angle on the shape of bow shock.SCIENCE CHINA-EARTH SCIENCES,58(7),1228-1234.
MLA Wang JiangYan,et al."Effects of the interplanetary magnetic field clock angle on the shape of bow shock".SCIENCE CHINA-EARTH SCIENCES 58.7(2015):1228-1234.
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