SM21B-2524
The Simulation of Ultra-relativistic Electrons with the RBE Model Incorporating EMIC Waves
Tuesday, 15 December 2015
Poster Hall (Moscone South)
Suk-Bin Kang1, Mei-Ching Hannah Fok1, Alex Glocer1, Kyoung Min2, Cheongrim Choi2 and Eunjin Choi1,3, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)KAIST Korea Advanced Institute of Science and Technology, Daejeon, South Korea, (3)Universities Space Research Association Columbia, Columbia, MD, United States
Abstract:
We simulated the ultra-relativistic electron flux in the radiation belt using the Radiation Belt Environment (RBE) model, incorporating the pitch-angle scattering rates caused by EMIC waves for the geomagnetic storm event of 23 – 27 October 2002. We scaled pitch angle scattering rates due to EMIC waves with magnetic field strengths. This simulation showed remarkable decreases in the ultra-relativistic (6 – 9 MeV) electron flux during the storm event, compared to those without EMIC waves. Furthermore, the ultra-relativistic (3 – 9 MeV) electron flux with EMIC waves corresponds very well with those observed from SAMPEX spacecraft. EMIC waves increased pitch angle anisotropy of the ultra-relativistic electron flux on the electron drift path. Thus, EMIC waves mainly lead to non-adiabatic dropout of relativistic electron flux.
