A three-dimensional high Mach number asymmetric magnetopause model from global MHD simulation

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 太阳和太阳系等离子体研究团组

	A three-dimensional high Mach number asymmetric magnetopause model from global MHD simulation
	Liu, Z. -Q.1; Lu, J. Y.2; Wang, C.1; Kabin, K.3; Zhao, J. S.4; Wang, M.2 ; Han, J. P.1,5; Wang, J. Y.1,5; Zhao, M. X.6
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2015-07-01
卷号	120 期号:7 页码:5645-5666
关键词	MHD Magnetopause Cusp
英文摘要	The numerical results from a physics-based global magnetohydrodynamic (MHD) model are used to examine the effect of the interplanetary magnetic field (IMF), solar wind dynamic pressure, and dipole tilt angle on the size and shape of the magnetopause. The subsolar magnetopause is identified using the plasma velocity and density, the cusps are identified using the thermal pressure, and the whole shape of the magnetopause is determined with the three-dimensional streamlines traced through the simulation domain. The magnetopause surface obtained from the simulations is fitted with a three-dimensional surface function controlled by ten configuration parameters, which provide a description of the subsolar magnetopause, the cusp geometry, the flaring angle, the azimuthal asymmetry, the north-south asymmetry, and the twisting angle of the magnetopause. Effects of the IMF, solar wind dynamic pressure, and dipole tilt angle on the configuration parameters are analyzed and fitted by relatively simple functions. It is found that the solar wind dynamic pressure mainly affects the magnetopause size; the IMF mainly controls the magnetopause flaring angle, azimuthal asymmetry, and twisting angle; and the dipole tilt angle mainly affects the magnetopause north-south asymmetry and the cusp geometry. The model is validated by comparing with available empirical models and observational results, and it is demonstrated that the new model can describe the magnetopause for typical solar wind conditions.
学科主题	天文和天体物理
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	INTERPLANETARY MAGNETIC-FIELD ; NEAR-EARTH MAGNETOTAIL ; SOLAR-WIND CONTROL ; ENERGY-TRANSFER ; GEOMAGNETIC FIELD ; EMPIRICAL-MODEL ; IMF DEPENDENCE ; BOW SHOCK ; SHAPE ; SIZE
收录类别	SCI
语种	英语
WOS记录号	WOS:000360381400030
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/14836]
专题	紫金山天文台_太阳和太阳系等离子体研究团组
作者单位	1.Chinese Acad Sci, State Key Lab Space Weather, Ctr Space Sci & Appl Res, Beijing, Peoples R China 2.Nanjing Univ Informat Sci & Technol, Coll Math & Stat, Inst Space Weather, Nanjing, Jiangsu, Peoples R China 3.Royal Mil Coll Canada, Dept Phys, Kingston, ON, Canada 4.Chinese Acad Sci, Purple Mt Observ, Nanjing, Jiangsu, Peoples R China 5.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China 6.China Meteorol Adm, Natl Ctr Space Weather, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Liu, Z. -Q.,Lu, J. Y.,Wang, C.,et al. A three-dimensional high Mach number asymmetric magnetopause model from global MHD simulation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2015,120(7):5645-5666.
APA	Liu, Z. -Q..,Lu, J. Y..,Wang, C..,Kabin, K..,Zhao, J. S..,...&Zhao, M. X..(2015).A three-dimensional high Mach number asymmetric magnetopause model from global MHD simulation.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,120(7),5645-5666.
MLA	Liu, Z. -Q.,et al."A three-dimensional high Mach number asymmetric magnetopause model from global MHD simulation".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 120.7(2015):5645-5666.