气候变化领域集成服务门户(CCPortal): Chorus Acceleration of Relativistic Electrons in Extremely Low L-Shell During Geomagnetic Storm of August 2018

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DOI	10.1029/2019GL086226
	Chorus Acceleration of Relativistic Electrons in Extremely Low L-Shell During Geomagnetic Storm of August 2018
	Zhang Z.; Chen L.; Liu S.; Xiong Y.; Li X.; Wang Y.; Chu W.; Zeren Z.; Shen X.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:4
英文摘要	Based on data from the Van Allen Probes and ZH-1 satellites, relativistic electron enhancements in extremely low L-shell regions (reaching L3) were observed during August 2018 major geomagnetic storm (minimum ≈ −190 nT). Contrary to what occurs in the outer belt, such an intense and deep electron penetration event is rare and more interesting. Strong whistler-mode (chorus and hiss) waves, with amplitudes 81–126 pT, were also observed in the extremely low L-shell simultaneously (reaching ~ 2.5) where the plasmapause was suppressed. The bounce-averaged diffusion coefficient calculations support that the chorus waves can play a significantly important role in diffusing and accelerating the 1–3 MeV electrons even in such low L-shells during storms. This is the first time that the electron acceleration induced by chorus waves in the extremely low L-shell region is reported. This new finding will help to deeply understand the electron acceleration process in radiation belt physics. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Electromagnetic waves; Electrons; Geomagnetism; Plasma accelerators; Radiation belts; Shells (structures); Storms; Chorus waves; Electron acceleration; Geomagnetic storm; L shell; MeV-Electrons; Quasi-linear; Relativistic electron; Relativistic electron enhancement; Atmospherics; acceleration; atmospheric electricity; electron; geomagnetic storm; magnetosphere; spatiotemporal analysis
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170667
作者单位	Institute of Crustal Dynamics, China Earthquake Administration, Beijing, China; Department of Physics, University of Texas at Dallas, Richardson, TX, United States; School of Physics and Electronic Sciences, Changsha University of Science and Technology, Changsha, China; Institute of Space Physics and Applied Technology, Peking University, Beijing, China; Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Zhang Z.,Chen L.,Liu S.,et al. Chorus Acceleration of Relativistic Electrons in Extremely Low L-Shell During Geomagnetic Storm of August 2018[J],2020,47(4).
APA	Zhang Z..,Chen L..,Liu S..,Xiong Y..,Li X..,...&Shen X..(2020).Chorus Acceleration of Relativistic Electrons in Extremely Low L-Shell During Geomagnetic Storm of August 2018.Geophysical Research Letters,47(4).
MLA	Zhang Z.,et al."Chorus Acceleration of Relativistic Electrons in Extremely Low L-Shell During Geomagnetic Storm of August 2018".Geophysical Research Letters 47.4(2020).