North west cape-induced electron precipitation and theoretical simulation

doi:10.1088/1674-1056/25/11/119401

	North west cape-induced electron precipitation and theoretical simulation
	Zhang, ZX; Li XQ(李新乔); Li, XQ; Wang, CY; Chen, LJ
刊名	CHINESE PHYSICS B
	2016
卷号	25 期号:11 页码:119401
关键词	North West Cape electron precipitation wave-particle interaction quasi-linear diffusion equation ray tracing
DOI	10.1088/1674-1056/25/11/119401
英文摘要	Enhancement of the electron fluxes in the inner radiation belt, which is induced by the powerful North West Cape (NWC) very-low-frequency (VLF) transmitter, have been observed and analyzed by several research groups. However, all of the previous publications have focused on NWC-induced > 100-keV electrons only, based on observations from the Detection of Electro-Magnetic Emissions Transmitted from Earthquake Regions (DEMETER) and the Geostationary Operational Environmental Satellite (GOES) satellites. Here, we present flux enhancements with 30-100-keV electrons related to NWC transmitter for the first time, which were observed by the GOES satellite at night. Similar to the 100-300-keV precipitated-electron behavior, the low energy 30-100-keV electron precipitation is primarily located east of the transmitter. However, the latter does not drift eastward to the same extent as the former, possibly because of the lower electron velocity. The 30-100-keV electrons are distributed in the L = 1.8-2.1 L-shell range, in contrast to the 100-300-keV electrons which are at L = 1.67-1.9. This is consistent with the perspective that the energy of the VLF-wave-induced electron flux enhancement decreases with higher L-shell values. We expand upon the rationality of the simultaneous enhancement of the 30-100- and 100-300-keV electron fluxes through comparison with the cyclotron resonance theory for the quasi-linear wave-particle interaction. In addition, we interpret the asymmetry characteristics of NWC electric power distribution in north and south hemisphere by ray tracing model. Finally, we present considerable discussion and show that good agreement exists between the observation of satellites and theory.
语种	英语
WOS记录号	WOS:000390376900102
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/260712]
专题	中国科学院高能物理研究所
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Zhang, ZX,Li XQ,Li, XQ,et al. North west cape-induced electron precipitation and theoretical simulation[J]. CHINESE PHYSICS B,2016,25(11):119401.
APA	Zhang, ZX,李新乔,Li, XQ,Wang, CY,&Chen, LJ.(2016).North west cape-induced electron precipitation and theoretical simulation.CHINESE PHYSICS B,25(11),119401.
MLA	Zhang, ZX,et al."North west cape-induced electron precipitation and theoretical simulation".CHINESE PHYSICS B 25.11(2016):119401.