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DOI: 10.1002/2016GL070084
论文题名:
The relationship between the macroscopic state of electrons and the properties of chorus waves observed by the Van Allen Probes
作者: Yue C.; An X.; Bortnik J.; Ma Q.; Li W.; Thorne R.M.; Reeves G.D.; Gkioulidou M.; Mitchell D.G.; Kletzing C.A.
刊名: Geophysical Research Letters
ISSN: 0094-8812
EISSN: 1944-8543
出版年: 2016
卷: 43, 期:15
起始页码: 7804
结束页码: 7812
语种: 英语
英文关键词: beta parallel ; electron temperature anisotropy ; marginally stable state ; oblique waves ; quasi-parallel waves ; whistler mode chorus waves
Scopus关键词: Anisotropy ; Electromagnetic waves ; Electron temperature ; Electrons ; Plasma diagnostics ; Plasma stability ; Probes ; beta parallel ; Electron temperature anisotropy ; Oblique wave ; Stable state ; Whistler-mode chorus ; Atmospherics
英文摘要: Plasma kinetic theory predicts that a sufficiently anisotropic electron distribution will excite whistler mode waves, which in turn relax the electron distribution in such a way as to create an upper bound on the relaxed electron anisotropy. Here using whistler mode chorus wave and plasma measurements by Van Allen Probes, we confirm that the electron distributions are well constrained by this instability to a marginally stable state in the whistler mode chorus waves generation region. Lower band chorus waves are organized by the electron β∥e into two distinct groups: (i) relatively large-amplitude, quasi-parallel waves with β∥e ≳ 0.025 and (ii) relatively small-amplitude, oblique waves with β∥e ≲ 0.025. The upper band chorus waves also have enhanced amplitudes close to the instability threshold, with large-amplitude waves being quasi-parallel whereas small-amplitude waves being oblique. These results provide important insight for studying the excitation of whistler mode chorus waves. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84983535127&doi=10.1002%2f2016GL070084&partnerID=40&md5=c696fe76876d9bddad6832254fdeb303
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被引频次[WOS]:48   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9775
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA, United States

Recommended Citation:
Yue C.,An X.,Bortnik J.,et al. The relationship between the macroscopic state of electrons and the properties of chorus waves observed by the Van Allen Probes[J]. Geophysical Research Letters,2016-01-01,43(15).
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