DOI: 10.1002/2013GL058089
论文题名: DEMETER observations of high-latitude chorus waves penetrating the plasmasphere during a geomagnetic storm
作者: Zhima Z. ; Cao J. ; Liu W. ; Fu H. ; Yang J. ; Zhang X. ; Shen X.
刊名: Geophysical Research Letters
ISSN: 0094-8354
EISSN: 1944-8085
出版年: 2013
卷: 40, 期: 22 起始页码: 5827
结束页码: 5832
语种: 英语
英文关键词: chorus
; DEMETER
; high latitude
; penetrate
; plasmasphere
; storm
Scopus关键词: chorus
; Demeter
; High Latitudes
; penetrate
; Plasmasphere
; Electromagnetic waves
; Geomagnetism
; Storms
; Wave power
; Magnetosphere
; data set
; DEMETER
; electromagnetic wave
; geomagnetic storm
; magnetosphere
; satellite imagery
; wave power
英文摘要: Using the data of the DEMTER satellite during the magnetic storm on 14 April 2006, we study the storm time VLF electromagnetic waves, and find the first observational evidence of penetration of high-latitude chorus into the plasmasphere. During this geomagnetic storm, "banded" emissions of a few hertz to 20 kHz are observed to be intensified and to be organized in the frequency range of 0.1-0.5fce (equatorial electron cyclotron frequency) in high-latitude region of magnetic latitude between ∼40°and ∼60°. The signatures in the wave power spectra suggest that these emissions are likely lower-band chorus. The observed chorus waves are generally outside the plasmasphere. However, interestingly, these waves are observed inside the plasmasphere at regions with low L value during the main phase and early recover phase, which has never been reported in previous studies of chorus in low-latitude regions. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887919008&doi=10.1002%2f2013GL058089&partnerID=40&md5=09d5164b1af9b01c1e763acf90ebf9f2
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5618
Appears in Collections: 气候减缓与适应
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作者单位: Space Science Institute, School of Astronautics, Beihang University, Beijing, China
Recommended Citation:
Zhima Z.,Cao J.,Liu W.,et al. DEMETER observations of high-latitude chorus waves penetrating the plasmasphere during a geomagnetic storm[J]. Geophysical Research Letters,2013-01-01,40(22).