The chain response of the magnetospheric and ground magnetic field to interplanetary shocks

	The chain response of the magnetospheric and ground magnetic field to interplanetary shocks
	Sun, T. R.; Wang, C.; Zhang, J. J.; Pilipenko, V. A.; Wang, Y.; Wang, J. Y.
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2015
卷号	120 期号:1 页码:157-165
关键词	interplanetary shock magnetic field response sudden impulse MHD simulation magnetosphere-ionosphere coupling
ISSN号	2169-9380
通讯作者	Sun, TR (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing, Peoples R China.
英文摘要	In response to interplanetary (IP) shocks, magnetic field may decrease/increase (negative/positive response) in nightside magnetosphere, while at high latitudes on the ground it has two-phase bipolar variations: preliminary impulse and main impulse (MI). Using global MHD simulations, we investigate the linkage between the MI phase variation on the ground and the magnetospheric negative response to an IP shock. It is revealed that although the two phenomena occur at largely separated locations, they are physically related and form a response chain. The velocity disturbances near the flanks of the magnetopause cause the magnetic field to decrease, resulting in a dynamo which thus powers the transient field-aligned currents (FACs). These FACs further generate a pair of ionospheric current vortex, leading to MI variations on the ground. Therefore, we report here the intrinsic physically related chain response of the magnetospheric and ground magnetic field to IP shocks, and thus link the magnetospheric sudden impulse (SI) and ground SI together.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/4615]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Sun, T. R.,Wang, C.,Zhang, J. J.,et al. The chain response of the magnetospheric and ground magnetic field to interplanetary shocks[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2015,120(1):157-165.
APA	Sun, T. R.,Wang, C.,Zhang, J. J.,Pilipenko, V. A.,Wang, Y.,&Wang, J. Y..(2015).The chain response of the magnetospheric and ground magnetic field to interplanetary shocks.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,120(1),157-165.
MLA	Sun, T. R.,et al."The chain response of the magnetospheric and ground magnetic field to interplanetary shocks".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 120.1(2015):157-165.