Correlated observations and simulations on the buildup of radiation belt electron fluxes driven by substorm injections and chorus waves
文献类型：期刊论文
| 作者 | He, Zhaoguo; Zhu, Hui; Liu, Siqing; Zong, Qiugang; Wang, Yongfu; Lin, Ruilin; Shi, Liqin; Gong, Jiancun |
| 刊名 | ASTROPHYSICS AND SPACE SCIENCE
 |
| 出版日期 | 2015 |
| 卷号 | 355期号:2页码:245-251 |
| 关键词 | Radiation belt Substorm Seed electron injection Chorus waves Acceleration Energetic electron |
| ISSN号 | 0004-640X |
| 通讯作者 | Liu, SQ (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China. |
| 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. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/4579]  |
| 专题 | 国家空间科学中心_空间环境部 |
| 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]. ASTROPHYSICS AND SPACE SCIENCE,2015,355(2):245-251. |
| 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.ASTROPHYSICS AND SPACE SCIENCE,355(2),245-251. |
| MLA | He, Zhaoguo,et al."Correlated observations and simulations on the buildup of radiation belt electron fluxes driven by substorm injections and chorus waves".ASTROPHYSICS AND SPACE SCIENCE 355.2(2015):245-251. |
入库方式： OAI收割
来源：国家空间科学中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。