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- SA11B-10: Numerical Experiments Studying Impacts on Plasmasphere Refilling
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Board 1963‚ Hall EFG (Poster Hall)NOLA CC
Author(s):Generic 'disconnected' Message
Jaden Fitzpatrick, University of Colorado at Boulder (First Author, Presenting Author)
Naomi Maruyama, University of Colorado at Boulder
Kausik Chatterjee, IB3 Global Solutions
Xiangning Chu, University of Colorado at Boulder
Tyler Bishop, University of Colorado at Boulder
Lauren Blum, University of Colorado at Boulder
Jerry Goldstein, Southwest Research Institute
Jacob Bortnik, University of California Los Angeles
The plasmasphere is a torus-shaped region above Earth's equator full of cold, dense, charged particles. Since it is the region closest to Earth’s surface that is heavily influenced by Earth's magnetic field, the plasmasphere is critical for studies of space weather and its impacts on GPS signals, the electrical grid, and spacecraft. When the Sun ejects some of its surface material toward Earth causing a solar storm, the reaction of Earth's magnetic field causes the plasmasphere to lose a majority of its mass which it then regains through refilling processes. However, refilling is highly complex and challenging to observe. A recent study using the Van Allen Probes data suggests that refilling can undergo two stages, and whether this happens or not is thought to depend on local conditions within the plasmasphere. The goal of our study is to understand how these conditions impact refilling by examining a model of the plasmasphere, ultimately providing insight as to what physical phenomena dominate the two-stage refilling process and when. Our results can be used to guide further investigations of the plasmasphere and its interactions with surrounding regions.
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