DOI: 10.1002/2013GL059132
论文题名: Quantifying hiss-driven energetic electron precipitation: A detailed conjunction event analysis
作者: Li W. ; Ni B. ; Thorne R.M. ; Bortnik J. ; Nishimura Y. ; Green J.C. ; Kletzing C.A. ; Kurth W.S. ; Hospodarsky G.B. ; Spence H.E. ; Reeves G.D. ; Blake J.B. ; Fennell J.F. ; Claudepierre S.G. ; Gu X.
刊名: Geophysical Research Letters
ISSN: 0094-10369
EISSN: 1944-10100
出版年: 2014
卷: 41, 期: 4 起始页码: 1085
结束页码: 1092
语种: 英语
英文关键词: electron precipitation
; infer hiss wave amplitudes
; plasmaspheric hiss
Scopus关键词: Probes
; Radiation belts
; Satellites
; Electron precipitation
; Energetic electron precipitation
; plasmaspheric hiss
; Polar orbiting environmental satellites
; Quasi-linear diffusion theory
; Radiation belt electrons
; Spatiotemporal evolution
; Wave amplitudes
; Electron scattering
; amplitude
; diffusion
; electron
; energy efficiency
; numerical model
; POES
; precipitation (chemistry)
; satellite imagery
; scattering
; spatiotemporal analysis
英文摘要: We analyze a conjunction event between the Van Allen Probes and the low-altitude Polar Orbiting Environmental Satellite (POES) to quantify hiss-driven energetic electron precipitation. A physics-based technique based on quasi-linear diffusion theory is used to estimate the ratio of precipitated and trapped electron fluxes (R), which could be measured by the two-directional POES particle detectors, using wave and plasma parameters observed by the Van Allen Probes. The remarkable agreement between modeling and observations suggests that this technique is applicable for quantifying hiss-driven electron scattering near the bounce loss cone. More importantly, R in the 100-300 keV energy channel measured by multiple POES satellites over a broad L magnetic local time region can potentially provide the spatiotemporal evolution of global hiss wave intensity, which is essential in evaluating radiation belt electron dynamics, but cannot be obtained by in situ equatorial satellites alone. Key Points Measured and calculated hiss Bw from POES electron measurements agree well Electron ratio measured by POES is able to estimate hiss wave intensity This technique can be used to provide global hiss wave distribution ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893826443&doi=10.1002%2f2013GL059132&partnerID=40&md5=ea7dd4fb38269e2a26306dccd8a11ddc
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7633
Appears in Collections: 气候减缓与适应
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作者单位: Department of Atmospheric and Oceanic Sciences, UCLA, Los Angeles CA, United States
Recommended Citation:
Li W.,Ni B.,Thorne R.M.,et al. Quantifying hiss-driven energetic electron precipitation: A detailed conjunction event analysis[J]. Geophysical Research Letters,2014-01-01,41(4).