HR: 0800h
AN: SM41C-1194    [Abstracts]
TI: MHD-PIC Connection Model of Auroral Arc Formation Process in a Magnetosphere-Ionosphere Coupling System
AU: * Sugiyama, T
EM: tsugi@jamstec.go.jp
AF: Earth Simulator Center, 3173-25 Showa-machi, Kanazawa-ku, Yokohama, 236-0001 Japan
AU: Kusano, K
EM: kusano@jamstec.go.jp
AF: Earth Simulator Center, 3173-25 Showa-machi, Kanazawa-ku, Yokohama, 236-0001 Japan
AU: Kageyama, A
EM: kage@jamstec.go.jp
AF: Earth Simulator Center, 3173-25 Showa-machi, Kanazawa-ku, Yokohama, 236-0001 Japan
AU: Hirose, S
EM: shirose@jamstec.go.jp
AF: Earth Simulator Center, 3173-25 Showa-machi, Kanazawa-ku, Yokohama, 236-0001 Japan
AU: Watanabe, K
EM: kuni@jamstec.go.jp
AF: Earth Simulator Center, 3173-25 Showa-machi, Kanazawa-ku, Yokohama, 236-0001 Japan
AU: Sato, T
EM: sato@jamstec.go.jp
AF: Earth Simulator Center, 3173-25 Showa-machi, Kanazawa-ku, Yokohama, 236-0001 Japan
AB: Although many kinds of simulation models have been developed to understand the complex plasma systems, the physical process and the spatial-temporal scales, must be restricted by the fundamental assumption of each model. However, the multiple scale coupling may play a crucial role in some plasma phenomena. Magnetosphere-ionosphere coupling is a typical example, where the large scale magnetohydrodynamic (MHD) instability may interact with the kinetic plasma process. We developed the new simulation model, in which the interaction between the macroscopic and microscopic processes is able to be taken into account self-consistently, by directly connecting the MHD simulation and the particle-in-cell (PIC) simulation models. The MHD-PIC connection model is first applied to the study of the auroral arc formation process, in which both the Alfven wave resonance instability and the electron acceleration in the double layer (DL) structure formed by the ion-acoustic instability are calculated simultaneously. It is an example of our challenge to create the holistic simulation frame-work, in which the heterogeneous schemes can be unified by the state-of-the-art numerical technique. In this presentation, we will explain the algorithm of the new model and show the results of that, which has been calculated in Earth Simulator.
DE: 7827 Kinetic and MHD theory
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005