Physics – Plasma Physics
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsh52a..02f&link_type=abstract
American Geophysical Union, Fall Meeting 2003, abstract #SH52A-02
Physics
Plasma Physics
2100 Interplanetary Physics, 2400 Ionosphere, 2700 Magnetospheric Physics, 7500 Solar Physics, Astrophysics, And Astronomy, 7800 Space Plasma Physics
Scientific paper
While there are existing models that specify and forecast the radiation belt environment, hardly any of them covers the entire radiation belt region and energy range. We have developed a forecasting model to predict the global radiation belt environment. The model is a data-driven physics-based model, which solves the bounce averaged convection-diffusion equation of plasma distribution functions in the ranges of 2-10 earth radii and 10 keV to 5 MeV energy. The effects of fluctuating magnetic and electric fields in particle transport, energy and pitch-angle diffusions due to wave-particle interactions are included in the model. A plasmasphere model is also embedded in the forecasting model to specify the cold plasma distribution for wave diffusion coefficient calculations. Simulation results of several magnetic storms suggest that the inductive electric field associated with time-varying magnetic field and energy diffusion as plasmas interacting with the whistler chorus are potential mechanisms to explain the electron enhancements often seen during storm recovery phases.
Fok M.-
Khazanov George V.
Ober Daniel M.
Webb Phillip A.
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