Quantifying the relative contributions of substorm injections and chorus   waves to the rapid outward extension of electron radiation belt

doi:10.1002/2014JA020709

CORC > 北京大学 > 地球与空间科学学院

	Quantifying the relative contributions of substorm injections and chorus waves to the rapid outward extension of electron radiation belt
	Su, Zhenpeng ; Zhu, Hui ; Xiao, Fuliang ; Zheng, Huinan ; Wang, Yuming ; Zong, Q.G. ; He, Zhaoguo ; Shen, Chao ; Zhang, Min ; Wang, Shui ; Kletzing, C. A. ; Kurth, W. S. ; Hospodarsky, G. B. ; Spence, H. E. ; Reeves, G. D. ; Funsten, H. O. ; Blake, J. B. ; Baker, D. N.
刊名	journal of geophysical research space physics
	2014
关键词	VAN ALLEN PROBES WHISTLER-MODE WAVES ART. NO. 1004 ENERGETIC PARTICLE GEOMAGNETIC STORMS MAGNETIC STORM PITCH-ANGLE OCTOBER 9 ACCELERATION DIFFUSION
DOI	10.1002/2014JA020709
英文摘要	We study the rapid outward extension of the electron radiation belt on a timescale of several hours during three events observed by Radiation Belt Storm Probes and Time History of Events and Macroscale Interactions during Substorms satellites and particularly quantify the contributions of substorm injections and chorus waves to the electron flux enhancement near the outer boundary of radiation belt. A comprehensive analysis including both observations and simulations is performed for the first event on 26 May 2013. The outer boundary of electron radiation belt moved from L = 5.5 to L > 6.07 over about 6 h, with up to 4 orders of magnitude enhancement in the 30 keV to 5 MeV electron fluxes at L = 6. The observations show that the substorm injection can cause 100% and 20% of the total subrelativistic (similar to 0.1 MeV) and relativistic (2-5 MeV) electron flux enhancements within a few minutes. The data-driven simulation supports that the strong chorus waves can yield 60%-80% of the total energetic (0.2-5.0 MeV) electron flux enhancement within about 6 h. Some simple analyses are further given for the other two events on 2 and 29 June 2013, in which the contributions of substorm injections and chorus waves are shown to be qualitatively comparable to those for the first event. These results clearly illustrate the respective importance of substorm injections and chorus waves for the evolution of radiation belt electrons at different energies on a relatively short timescale.; Astronomy & Astrophysics; SCI(E); 0; ARTICLE; szpe@mail.ustc.edu.cn; 12; 119
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/206898]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Su, Zhenpeng,Zhu, Hui,Xiao, Fuliang,et al. Quantifying the relative contributions of substorm injections and chorus waves to the rapid outward extension of electron radiation belt[J]. journal of geophysical research space physics,2014.
APA	Su, Zhenpeng.,Zhu, Hui.,Xiao, Fuliang.,Zheng, Huinan.,Wang, Yuming.,...&Baker, D. N..(2014).Quantifying the relative contributions of substorm injections and chorus waves to the rapid outward extension of electron radiation belt.journal of geophysical research space physics.
MLA	Su, Zhenpeng,et al."Quantifying the relative contributions of substorm injections and chorus waves to the rapid outward extension of electron radiation belt".journal of geophysical research space physics (2014).