NSSC OpenIR  > 空间科学部
A Three-Dimensional Ray Tracing Study on Whistler-Mode Chorus During Geomagnetic Activities
Zhou Qinghua; Shi Jiankui; Xiao Fuliang; Xiao, FL (reprint author), Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Changsha 410004, Hunan, Peoples R China.
Department空间科学部
Source PublicationPLASMA SCIENCE & TECHNOLOGY
2011
Volume13Issue:4Pages:440-445
ISSN1009-0630
Language英语
Keyword3-d Ray Tracing Study Whistler-mode Chorus Geomagnetic Activities
AbstractA three-dimensional ray tracing study of a whistler-mode chorus is conducted for different geomagnetic activities by using a global core plasma density model. For the upper-band chorus, the initial azimuthal wave angle affects slightly the projection of ray trajectories onto the plane (Z, root(x(2) + y(2))), but controls the longitudinal propagation. The trajectory of the upper-band chorus is strongly associated with the plasmapause and the magnetic local time (MLT) of chorus source region. For the high geomagnetic activity, the chorus trajectory moves inward together with the plasmapause. In the bulge region, the plasmapause extends outward, while the chorus trajectory moves outward together with the plasmapause. For moderately or high geomagnetic activity, the lower-band chorus suffers low hybrid resonance (LHR) reflection before it reaches the plasmapause, leading to a weak correlation with the geomagnetic activity and magnetic local time of the chorus source region. For low geomagnetic activity, the lower-band chorus may be reflected firstly at the plasmapause instead of suffering LHR reflection, exhibiting a propagation characteristic similar to that of the upper-band chorus. The results provide a new insight into the propagation characteristics of the chorus for different geomagnetic activities and contribute to further understanding of the acceleration of energetic electron by a chorus wave.; A three-dimensional ray tracing study of a whistler-mode chorus is conducted for different geomagnetic activities by using a global core plasma density model. For the upper-band chorus, the initial azimuthal wave angle affects slightly the projection of ray trajectories onto the plane (Z, root(x(2) + y(2))), but controls the longitudinal propagation. The trajectory of the upper-band chorus is strongly associated with the plasmapause and the magnetic local time (MLT) of chorus source region. For the high geomagnetic activity, the chorus trajectory moves inward together with the plasmapause. In the bulge region, the plasmapause extends outward, while the chorus trajectory moves outward together with the plasmapause. For moderately or high geomagnetic activity, the lower-band chorus suffers low hybrid resonance (LHR) reflection before it reaches the plasmapause, leading to a weak correlation with the geomagnetic activity and magnetic local time of the chorus source region. For low geomagnetic activity, the lower-band chorus may be reflected firstly at the plasmapause instead of suffering LHR reflection, exhibiting a propagation characteristic similar to that of the upper-band chorus. The results provide a new insight into the propagation characteristics of the chorus for different geomagnetic activities and contribute to further understanding of the acceleration of energetic electron by a chorus wave.
Indexed BySCI ; EI
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/3080
Collection空间科学部
Corresponding AuthorXiao, FL (reprint author), Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Changsha 410004, Hunan, Peoples R China.
Recommended Citation
GB/T 7714
Zhou Qinghua,Shi Jiankui,Xiao Fuliang,et al. A Three-Dimensional Ray Tracing Study on Whistler-Mode Chorus During Geomagnetic Activities[J]. PLASMA SCIENCE & TECHNOLOGY,2011,13(4):440-445.
APA Zhou Qinghua,Shi Jiankui,Xiao Fuliang,&Xiao, FL .(2011).A Three-Dimensional Ray Tracing Study on Whistler-Mode Chorus During Geomagnetic Activities.PLASMA SCIENCE & TECHNOLOGY,13(4),440-445.
MLA Zhou Qinghua,et al."A Three-Dimensional Ray Tracing Study on Whistler-Mode Chorus During Geomagnetic Activities".PLASMA SCIENCE & TECHNOLOGY 13.4(2011):440-445.
Files in This Item: Download All
File Name/Size DocType Version Access License
2011134440.pdf(2790KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhou Qinghua]'s Articles
[Shi Jiankui]'s Articles
[Xiao Fuliang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhou Qinghua]'s Articles
[Shi Jiankui]'s Articles
[Xiao Fuliang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhou Qinghua]'s Articles
[Shi Jiankui]'s Articles
[Xiao Fuliang]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2011134440.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.