Correlated observations and simulations on the buildup of radiation belt   electron fluxes driven by substorm injections and chorus waves

doi:10.1007/s10509-014-2180-8

CORC > 北京大学 > 地球与空间科学学院

	Correlated observations and simulations on the buildup of radiation belt electron fluxes driven by substorm injections and chorus waves
	He, Zhaoguo ; Zhu, Hui ; Liu, Siqing ; Zong, Qiugang ; Wang, Yongfu ; Lin, Ruilin ; Shi, Liqin ; Gong, Jiancun
刊名	天体物理学与空间科学
	2015
关键词	Radiation belt Substorm Seed electron injection Chorus waves Acceleration Energetic electron QUASI-LINEAR DIFFUSION VAN ALLEN PROBES RELATIVISTIC ELECTRONS MAGNETIC STORM GEOSYNCHRONOUS ORBIT RING CURRENT ACCELERATION MAGNETOSPHERE COEFFICIENTS SCATTERING
DOI	10.1007/s10509-014-2180-8
英文摘要	We report the multi-satellite (LANL, GOES-10 and Cluster) observation data of electron flux evolutions and chorus wave excitation in the radiation belt during the geomagnetic storm and substorm from 10 to 14 January, 2002. The seed (50-225 keV) electron flux increased 50 times in five hours during the storm main phase, and the relativistic (>0.6 MeV) electron flux increased about 60 times at night side during the recovery phase. In the meanwhile, the Cluster satellites detected intense chorus waves (the wave power up to similar to 10(-3) nT(2) Hz(-1)) at MLT approximate to 3 when passing through the outer radiation belt. Using a Gaussian fit to the observed chorus spectra, we calculate the drift-averaged diffusion coefficients and then solve a 2-D Fokker-Planck diffusion equation. We simulate the energetic electron flux evolutions driven by chorus waves in two cases: with and without seed electron injections. We show that the energetic electron flux increases 79 times in three days with injection, comparable to the observation. However, the flux increases only 3 times in three days without injection, far below the observation. The current results suggest that the injected seed electrons and chorus waves play important roles in the buildup of the radiation belt electrons.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000350206600006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Astronomy & Astrophysics; SCI(E); 0; ARTICLE; liusq@nssc.ac.cn; 2; 245-251; 355
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/206406]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	He, Zhaoguo,Zhu, Hui,Liu, Siqing,et al. Correlated observations and simulations on the buildup of radiation belt electron fluxes driven by substorm injections and chorus waves[J]. 天体物理学与空间科学,2015.
APA	He, Zhaoguo.,Zhu, Hui.,Liu, Siqing.,Zong, Qiugang.,Wang, Yongfu.,...&Gong, Jiancun.(2015).Correlated observations and simulations on the buildup of radiation belt electron fluxes driven by substorm injections and chorus waves.天体物理学与空间科学.
MLA	He, Zhaoguo,et al."Correlated observations and simulations on the buildup of radiation belt electron fluxes driven by substorm injections and chorus waves".天体物理学与空间科学 (2015).