Physics – Geophysics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm51a1333z&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SM51A-1333
Physics
Geophysics
[2774] Magnetospheric Physics / Radiation Belts, [3225] Mathematical Geophysics / Numerical Approximations And Analysis
Scientific paper
A data-driven physical model of the energetic electrons in the Earth’s radiation belts, called the Radiation Belt Environment (RBE) model, has been developed to understand Earth’s radiation belt dynamics and to predict the radiation conditions found there. Understanding the dynamics of the Earth’s outer radiation belt is important for better modeling and forecasting the intensities of energetic electrons in space. It is established that whistler-mode chorus wave diffusion processes are responsible for loss and acceleration of electrons in the radiation belts. Several recent studies indicate pitch angle and energy cross-diffusion cannot be ignored when considering the total diffusive effects. In this study, we incorporate the electron energy and pitch angle cross diffusion by whistler-mode chorus wave into the current Radiation Belt Environment model and investigate its effects on the dynamics of radiation belt electrons. In this study, the Alternative Direction Implicit (ADI) method is used to solve the cross diffusion equation.
Fok M. H.
Zheng Quan-shui
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