DOI: 10.1002/2014GL059241
论文题名: Cold electron heating by EMIC waves in the plasmaspheric plume with observations of the Cluster satellite
作者: Yuan Z. ; Xiong Y. ; Huang S. ; Deng X. ; Pang Y. ; Zhou M. ; Dandouras I. ; Trotignon J.G. ; Fazakerley A.N. ; Lucek E.
刊名: Geophysical Research Letters
ISSN: 0094-10273
EISSN: 1944-10004
出版年: 2014
卷: 41, 期: 6 起始页码: 1830
结束页码: 1837
语种: 英语
英文关键词: Electron heating
; EMIC waves
; Landau resonant
; Plasmaspheric plumes
; Ring current
Scopus关键词: Plasma waves
; Cluster spacecraft
; Electron heating
; In-situ observations
; Landau resonant
; Plasmaspheric plumes
; Resonant interaction
; Ring currents
; Theoretical calculations
; Plasma heating
; atmospheric plume
; damping
; electromagnetic wave
; electron
; heating
; in situ measurement
; magnetosphere
; resonance
; satellite imagery
; spacecraft
英文摘要: We report in situ observations by the Cluster spacecraft of plasmaspheric electron heating in the plasmaspheric plume. Electron heating events were accompanied by enhancements of electromagnetic ion cyclotron (EMIC) waves in the increased density ducts on the negative density gradient side for two substructures of the plasmaspheric plume. Electron heating is much stronger for the pitch angle of 0° and 180° than for the pitch angle of 90°. Theoretical calculations of the Landau resonant interaction between electrons and observed EMIC waves demonstrate that Landau damping of oblique EMIC waves is a reasonable candidate to heat cold electrons in the presence of O+ ions in the outer boundary of the plasmaspheric plume. Therefore, this observation is considered in situ evidence of plasmaspheric electron heating through Landau damping of EMIC waves in plasmaspheric plumes. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896419703&doi=10.1002%2f2014GL059241&partnerID=40&md5=5639cf3d902ebe812784641dad800850
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7537
Appears in Collections: 气候减缓与适应
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作者单位: School of Electronic Information, Wuhan University, Wuhan, China
Recommended Citation:
Yuan Z.,Xiong Y.,Huang S.,et al. Cold electron heating by EMIC waves in the plasmaspheric plume with observations of the Cluster satellite[J]. Geophysical Research Letters,2014-01-01,41(6).