DOI: 10.1002/2014GL060787
论文题名: Modeling cross L shell impacts of magnetopause shadowing and ULF wave radial diffusion in the Van Allen belts
作者: Ozeke L.G. ; Mann I.R. ; Turner D.L. ; Murphy K.R. ; Degeling A.W. ; Rae I.J. ; Milling D.K.
刊名: Geophysical Research Letters
ISSN: 0094-9750
EISSN: 1944-9481
出版年: 2014
卷: 41, 期: 19 起始页码: 6556
结束页码: 6562
语种: 英语
英文关键词: magnetopause shadowing
; radiation belt
; ULF wave radial diffusion
Scopus关键词: Computer simulation
; Diffusion
; Magnetopause
; Shells (structures)
; Weather forecasting
; Differential flux
; Electron radiation belt
; Implications for futures
; In-situ observations
; Radial diffusion
; Shadowing loss
; Space weather forecasting
; Time dependence
; Radiation belts
; boundary condition
; energy flux
; magnetopause
; radial diffusion
; simulation
; wave field
英文摘要: We present simulations of the outer electron radiation belt using a new ULF wave-driven radial diffusion model, including empirical representations of loss due to chorus and plasmaspheric hiss. With an outer boundary condition constrained by in situ electron flux observations, we focus on the impacts of magnetopause shadowing and outward radial diffusion in the heart of the radiation belt. Third invariant conserving solutions are combined to simulate the L shell and time dependence of the differential flux at a fixed energy. Results for the geomagnetically quiet year of 2008 demonstrate not only remarkable cross L shell impacts from magnetopause shadowing but also excellent agreement with the in situ observations even though no internal acceleration source is included in the model. Our model demonstrates powerful utility for capturing the cross-L impacts of magnetopause shadowing with significant prospects for improved space weather forecasting. The potential role of the plasmasphere in creating a third belt is also discussed. Key Points Physics-based ULF wave transport creates shadowing loss in heart of outer beltRemarkable agreement across L shells between model and observationsPowerful implications for future modeling, forecasting, and creating third belt ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911377243&doi=10.1002%2f2014GL060787&partnerID=40&md5=b3d2d83905fd8725f48a815b3248e671
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7014
Appears in Collections: 气候减缓与适应
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作者单位: Department of Physics, University of Alberta, Edmonton, AB, Canada
Recommended Citation:
Ozeke L.G.,Mann I.R.,Turner D.L.,et al. Modeling cross L shell impacts of magnetopause shadowing and ULF wave radial diffusion in the Van Allen belts[J]. Geophysical Research Letters,2014-01-01,41(19).