SM13A-2476
Global Effects of the Interplanetary Shock Propagation through the Earth's Inner Magnetosphere: 3D Hybrid Kinetic ModelingA.S. Lipatov {1}, D.G. Sibeck {2}{1} GPHI UMBC/NASA GSFC, Greenbelt, MD 20771, USA {2} NASA GSFC, Greenbelt, MD 20771, USA
Monday, 14 December 2015
Poster Hall (Moscone South)
Alexander S Lipatov, University of Maryland Baltimore County, Baltimore, MD, United States and David G Sibeck, NASA/GSFC, Greenbelt, MD, United States
Abstract:
We use a new hybrid kinetic model to simulate the response of
ring current, outer radiation belt, and plasmasphere particle populations
to impulsive interplanetary shocks. Since particle distributions attending
the interplanetary shock waves and in the ring current and radiation belts
are non-Maxwellian, wave-particle interactions play a crucial role in energy
transport within the inner magnetosphere. Finite gyroradius effects become
important in mass loading the shock waves with the background plasma
in the presence of higher energy ring current and radiation belt ions and
electrons. Initial results show that the shock causes strong deformations
in the global structure of the ring current, radiation belt, and plasmasphere.
The ion velocity distribution functions at the shock front, in the ring current,
and in the radiation belt help us to determine energy transport through the
Earth's inner magnetosphere. We compare our predictions with THEMIS and
Van Allen Probes spacecraft observations.
