SM52A-04
New Insights on Ring Current-Radiation Belt Dynamics from Observation and Simulation Studies
Friday, 18 December 2015: 11:05
2018 (Moscone West)
Mei-Ching Hannah Fok1, Natalia Buzulukova1, George V Khazanov2, Alex Glocer1, David G Sibeck3, Sheng-Hsein Chen1, Joseph D Perez4 and Mark J. Engebretson5, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)NASA Goddard Space Flight Center, Heliophysics Sci. Div., Greenbelt, MD, United States, (3)NASA/GSFC, Greenbelt, MD, United States, (4)Auburn University at Montgomery, Auburn, AL, United States, (5)Augsburg College, Minneapolis, MN, United States
Abstract:
Vast data from recent magnetosphere missions and advances in numerical modeling have brought deeper understanding of the dynamics of the storm-time inner magnetosphere. In this talk we examine new features in the ring current and radiation belts captured by the Van Allen Probes, TWINS and ground-based observations. In particular, we will discuss the double-peaks ring current injection, local-time dependence of EMIC wave emissions, and the remnant belt. To understand the physics behind these interesting signatures, we perform simulations with the Comprehensive Inner Magnetosphere-Ionosphere (CIMI) model. One of the results from comparison with measurements and simulations will be evidence for energy dependent and pitch-angle dependent drift. We will present new insights on ring current-radiation belt dynamics resulting from our comparative studies.
