Latitudinal dependence of nonlinear interaction between electromagnetic ion cyclotron wave and terrestrial ring current ions

	Latitudinal dependence of nonlinear interaction between electromagnetic ion cyclotron wave and terrestrial ring current ions
	Su, Zhenpeng ; Zhu, Hui ; Xiao, Fuliang ; Zheng, Huinan ; Zhang, Min ; Liu, Y.C.-M. ; Shen, Chao ; Wang, Yuming ; Wang, Shui
刊名	Physics of Plasmas
	2014
卷号	21 期号:5 页码:052310
ISSN号	1070-664X
通讯作者	北京8701信箱
中文摘要	Electromagnetic ion cyclotron (EMIC) waves can lead to the rapid decay (on a timescale of hours) of the terrestrial ring current. Such decay process is usually investigated in the framework of quasi-linear theory. Here, both theoretical analysis and test-particle simulation are performed to understand the nonlinear interaction between ring current ions and EMIC waves. In particular, the dependence of the nonlinear wave-particle interaction processes on the ion initial latitude is investigated in detail. These nonlinear processes are classified into the phase trapping and phase bunching, and the phase bunching is further divided into the channel and cluster effects. Compared to the prediction of the quasi-linear theory, the ring current decay rate can be reduced by the phase trapping, increased by the channel effect phase bunching, but non-deterministically influenced by the cluster effect phase bunching. The ion initial latitude changes the occurrence of the phase trapping, modulates the transport direction and strength of the cluster effect phase bunching, and only slightly affects the channel effect phase bunching. The current results suggest that the latitudinal dependence of these nonlinear processes should be considered in the evaluation of the ring current decay induced by EMIC waves. © 2014 AIP Publishing LLC.
学科主题	空间物理
收录类别	SCI ; EI
语种	英语
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/2742]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Su, Zhenpeng,Zhu, Hui,Xiao, Fuliang,et al. Latitudinal dependence of nonlinear interaction between electromagnetic ion cyclotron wave and terrestrial ring current ions[J]. Physics of Plasmas,2014,21(5):052310.
APA	Su, Zhenpeng.,Zhu, Hui.,Xiao, Fuliang.,Zheng, Huinan.,Zhang, Min.,...&Wang, Shui.(2014).Latitudinal dependence of nonlinear interaction between electromagnetic ion cyclotron wave and terrestrial ring current ions.Physics of Plasmas,21(5),052310.
MLA	Su, Zhenpeng,et al."Latitudinal dependence of nonlinear interaction between electromagnetic ion cyclotron wave and terrestrial ring current ions".Physics of Plasmas 21.5(2014):052310.