DOI: 10.1002/2016GL068869
论文题名: Reproducing the observed energy-dependent structure of Earth's electron radiation belts during storm recovery with an event-specific diffusion model
作者: Ripoll J.-F. ; Reeves G.D. ; Cunningham G.S. ; Loridan V. ; Denton M. ; Santolík O. ; Kurth W.S. ; Kletzing C.A. ; Turner D.L. ; Henderson M.G. ; Ukhorskiy A.Y.
刊名: Geophysical Research Letters
ISSN: 0094-9000
EISSN: 1944-8731
出版年: 2016
卷: 43, 期: 11 起始页码: 5616
结束页码: 5625
语种: 英语
英文关键词: electron lifetimes
; electron losses
; hiss waves
; radiation belts
; slot region
; wave particle interactions
Scopus关键词: Electrons
; Magnetosphere
; Probes
; Radiation belts
; Shells (structures)
; Storms
; Characteristic energy
; Electron lifetime
; Electron loss
; Electron radiation belt
; Equilibrium conditions
; Radiation belt dynamics
; slot region
; Wave-particle interactions
; Atmospherics
英文摘要: We present dynamic simulations of energy-dependent losses in the radiation belt “slot region” and the formation of the two-belt structure for the quiet days after the 1 March storm. The simulations combine radial diffusion with a realistic scattering model, based data-driven spatially and temporally resolved whistler-mode hiss wave observations from the Van Allen Probes satellites. The simulations reproduce Van Allen Probes observations for all energies and L shells (2–6) including (a) the strong energy dependence to the radiation belt dynamics (b) an energy-dependent outer boundary to the inner zone that extends to higher L shells at lower energies and (c) an “S-shaped” energy-dependent inner boundary to the outer zone that results from the competition between diffusive radial transport and losses. We find that the characteristic energy-dependent structure of the radiation belts and slot region is dynamic and can be formed gradually in ~15 days, although the “S shape” can also be reproduced by assuming equilibrium conditions. The highest-energy electrons (E > 300 keV) of the inner region of the outer belt (L ~ 4–5) also constantly decay, demonstrating that hiss wave scattering affects the outer belt during times of extended plasmasphere. Through these simulations, we explain the full structure in energy and L shell of the belts and the slot formation by hiss scattering during storm recovery. We show the power and complexity of looking dynamically at the effects over all energies and L shells and the need for using data-driven and event-specific conditions. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977177416&doi=10.1002%2f2016GL068869&partnerID=40&md5=3210c675c75eb9f5c4acede56dc8c3f4
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9963
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: CEA, DAM, DIF, Arpajon, France
Recommended Citation:
Ripoll J.-F.,Reeves G.D.,Cunningham G.S.,et al. Reproducing the observed energy-dependent structure of Earth's electron radiation belts during storm recovery with an event-specific diffusion model[J]. Geophysical Research Letters,2016-01-01,43(11).