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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.; Sun, TR (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing, Peoples R China.
Department空间科学部
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2015
Volume120Issue:1Pages:157-165
ISSN2169-9380
Language英语
KeywordInterplanetary Shock Magnetic Field Response Sudden Impulse Mhd Simulation Magnetosphere-ionosphere Coupling
AbstractIn 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.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/4615
Collection空间科学部
Corresponding AuthorSun, TR (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing, Peoples R China.
Recommended Citation
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..,...&Sun, TR .(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.
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