DOI: 10.1002/2015GL066581
论文题名: High-resolution in situ observations of electron precipitation-causing EMIC waves
作者: Rodger C.J. ; Hendry A.T. ; Clilverd M.A. ; Kletzing C.A. ; Brundell J.B. ; Reeves G.D.
刊名: Geophysical Research Letters
ISSN: 0094-8394
EISSN: 1944-8125
出版年: 2015
卷: 42, 期: 22 起始页码: 9633
结束页码: 9641
语种: 英语
英文关键词: EMIC waves
; energetic electron precipitation
; radiation belt electrons
; wave-particle interactions
Scopus关键词: Electron scattering
; Magnetosphere
; Particle interactions
; Radiation belts
; Wave plasma interactions
; Wave power
; Electron precipitation
; Energetic electron precipitation
; Ground-based observations
; In-situ observations
; Pitch-angle scattering
; Radiation belt electrons
; Satellite based observations
; Wave-particle interactions
; Electrons
; electromagnetic field
; electron
; ground-based measurement
; in situ measurement
; instrumentation
; particle motion
; plasma
; precipitation (climatology)
; radiative transfer
; satellite data
; wave action
; wave scattering
英文摘要: Electromagnetic ion cyclotron (EMIC) waves are thought to be important drivers of energetic electron losses from the outer radiation belt through precipitation into the atmosphere. While the theoretical possibility of pitch angle scattering-driven losses from these waves has been recognized for more than four decades, there have been limited experimental precipitation observations to support this concept. We have combined satellite-based observations of the characteristics of EMIC waves, with satellite and ground-based observations of the EMIC-induced electron precipitation. In a detailed case study, supplemented by an additional four examples, we are able to constrain for the first time the location, size, and energy range of EMIC-induced electron precipitation inferred from coincident precipitation data and relate them to the EMIC wave frequency, wave power, and ion band of the wave as measured in situ by the Van Allen Probes. These observations will better constrain modeling into the importance of EMIC wave-particle interactions. Key Points EMIC waves are thought to be highly important drivers of electron loss from the outer radiation belt To date, there are few experimental examples of precipitation-causing EMIC events Simultaneous in situ EMIC wave, plasma, and precipitation flux measurements made for the first time. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956897094&doi=10.1002%2f2015GL066581&partnerID=40&md5=200fab0f06e25875fe05a75f10426d28
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8010
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 Physics, University of Otago, Dunedin, New Zealand
Recommended Citation:
Rodger C.J.,Hendry A.T.,Clilverd M.A.,et al. High-resolution in situ observations of electron precipitation-causing EMIC waves[J]. Geophysical Research Letters,2015-01-01,42(22).