On the Relationship Between Electron Flux Oscillations and ULF Wave-Driven Radial Transport

TitleOn the Relationship Between Electron Flux Oscillations and ULF Wave-Driven Radial Transport
Publication TypeJournal Article
Year of Publication2017
AuthorsSarris, TE, Li, X, Temerin, M, Zhao, H, Califf, S, Liu, W, Ergun, R
JournalJournal of Geophysical Research: Space Physics
Date Published06/2017
KeywordsFlux Oscillations; MagEIS, EMFISIS, EFW; Phase space density; radial diffusion; Radiation belts; Van Allen Probes
AbstractThe objective of this study is to investigate the relationship between the levels of electron flux oscillations and radial diffusion for different Phase Space Density (PSD) gradients, through observation and particle tracing simulations under the effect of model Ultra Low Frequency (ULF) fluctuations. This investigation aims to demonstrate that electron flux oscillation is associated with and could be used as an indicator of ongoing radial diffusion. To this direction, flux oscillations are observed through the Van Allen Probes’ MagEIS energetic particle detector; subsequently, flux oscillations are produced in a particle tracing model that simulates radial diffusion by using model magnetic and electric field fluctuations that are approximating measured magnetic and electric field fluctuations as recorded by the Van Allen Probes’ EMFISIS and EFW instruments, respectively. The flux oscillation amplitudes are then correlated with Phase Space Density gradients in the magnetosphere and with the ongoing radial diffusion process.
URLhttp://onlinelibrary.wiley.com/doi/10.1002/2016JA023741/full
DOI10.1002/2016JA023741
Short TitleJ. Geophys. Res. Space Physics


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