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Global features of Kelvin-Helmholtz waves at the magnetopause for northward interplanetary magnetic field
Wenya Li; Chi Wang; Binbin Tang; Xiaocheng Guo; Dong Lin; 北京8701信箱
Department空间天气学国家重点实验室
Source PublicationJournal of Geophysical Research: Space Physics
2013
Volume118Issue:8Pages:5118-5126
ISSN2169-9402
Language英语
KeywordKelvin-helmholtz Instability Global Feature Magnetopause Boundary Layer Magnetosphere
Other AbstractWe investigate the global features of Kelvin-Helmholtz waves (KHW) at the low-latitude magnetopause for constant northward interplanetary magnetic field conditions, using global magnetohydrodynamic simulations. The root-integrated power (RIP) of X component of bulk velocity is employed to analyze the magnetopause mode of KHW along the boundary layer. The RIP distribution of the outer KHW is much broader than that of the inner one, and the maximum amplitude of global KHW occurs near the dawn/dusk terminator regions. In the dayside magnetopause, the phase of the waveform at middle latitudes leads to that at low latitudes, while the situation reversed in the nightside. The global evolution of KHW phases is a representation of an interesting feature that the axis of the Kelvin-Helmholtz vortex aligns with the geomagnetic field lines. We suggest that the reported features may also exist in other KHW active regions with flow-sheared plasma.
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1525
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
Wenya Li,Chi Wang,Binbin Tang,等. Global features of Kelvin-Helmholtz waves at the magnetopause for northward interplanetary magnetic field[J]. Journal of Geophysical Research: Space Physics,2013,118(8):5118-5126.
APA Wenya Li,Chi Wang,Binbin Tang,Xiaocheng Guo,Dong Lin,&北京8701信箱.(2013).Global features of Kelvin-Helmholtz waves at the magnetopause for northward interplanetary magnetic field.Journal of Geophysical Research: Space Physics,118(8),5118-5126.
MLA Wenya Li,et al."Global features of Kelvin-Helmholtz waves at the magnetopause for northward interplanetary magnetic field".Journal of Geophysical Research: Space Physics 118.8(2013):5118-5126.
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