HR: 0830h
AN: SM11C-1167    [PDF]
TI: The dynamic Behaviors of the Magnetosphere Based on A Laboratory Simulation
AU: * Rana, R
EM: rana@em.elec.eng.osaka-cu.ac.jp
AF: Department of Electrical Engineering, Osaska City Jniversity, Sugimoto 3, Sumiyoshi, Osaka, 558-8585 Japan
AU: Minami, S
EM: minami@elec.eng.osaka-cu.ac.jp
AF: Department of Electrical Engineering, Osaska City Jniversity, Sugimoto 3, Sumiyoshi, Osaka, 558-8585 Japan
AU: Suzuki, Y
EM: suzuki@elec.eng.osaka-cu.ac.jp
AF: Department of Electrical Engineering, Osaska City Jniversity, Sugimoto 3, Sumiyoshi, Osaka, 558-8585 Japan
AB: We have performed a laboratory simulation of the magnetosphere. The main aim of this experiment is to understand the acceleration mechanism of the aurora. Our laboratory simulations are examined to satisfy the MHD scaling law. Electric field is measured on the sun-earth line in the nightside of the magnetosphere. The result has shown that the earthward electric field exists on the tail current sheet stably. The value is consistent with the predicted electric field in the magnetospheric current sheet. In this experiment, the dynamic pressure of the simulated solar wind is changed to investigate the dynamic behavior of the magnetosphere and the mechanism of the substorm. The measured electric field in the tail current sheet is modulated due to the change of the solarwind dynamic pressure. The experimental results also show that the magnetospheric current in the plasmapause exists rather longer time after the disappearance of the solar wind. It is found that the confinement time is consistent with the Bohm_fs magnetic field diffusion time.
DE: 2784 Solar wind/magnetosphere interactions
SC: SPA - Magnetospheric Physics [SM]
MN: 2003 Fall Meeting