HR: 0800h
AN: SM41A-0313    [Abstracts]
TI: MHD Simulation of the Magnetic Storm on the Solar Flare Event in December 2006
AU: * Ogino, T
EM: ogino@stelab.nagoya-u.ac.jp
AF: Solar Terrestrial Environmental Laboratory, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan
AU: Kataoka, R
EM: ryuho@riken.jp
AF: The Institute of Physics and Chemical Research, Hirosawa 2-1, Wakou, 351-0198, Japan
AU: Obara, T
EM: T.Obara@nict.go.jp
AF: National Institute of Information and Communications Technology, Nukui-kitamati 4-2-1, Koganei, 184-8795, Japan
AU: Omura, Y
EM: omura@rish.kyoto-u.ac.jp
AF: Research Institute for Sustainable Humanosphere, Gokasho, Uji, 611-0011, Japan
AU: Kusano, K
EM: kanya.kusano@gmail.com
AF: The Earth Simulator Center, Japan Agency for Marine-Earth Science and Technology, Syowa-cho 3173-25, Yokohama, 236-0001, Japan
AU: Shibata, K
EM: shibata@kwasan.kyoto-u.ac.jp
AF: Kwasan Observatory, Kyoto University, Kwasan Omine-cho, Kyoto, 607-8471, Japan
AB: It is an important subject on space weather study to make a physical model and to simulate a series of phenomena from origins of disturbances in the sun to the responses of magnetosphere and ionosphere in earth. Under the Creative Scientific Research "The Basic Study of Space Weather Prediction", we have tried such a series of modeling on the solar flare event in December 13-16 2006 and the geomagnetic storms. Following the space weather modeling (1) from the sun to solar wind, we present the space weather modeling (2) from the solar wind to the magnetosphere-ionosphere response in the earth. Large interplanetary disturbances were generated in association with the strong solar activity of X-class flare. Characteristic features of the event are two X-class flares on 12/13 and 12/14 in the interval of rather quiet solar activity, north-south fluctuation of IMF and a long duration of southward IMF from 12/14, arrival of a high speed solar wind during the time for southward IMF. Propagation of the disturbances from the sun to the earth is simulated by using 3D global solar wind model following evolution of solar disturbances. A 3D global MHD simulation of interaction between the solar wind and earth's magnetosphere is carried out by using the output of the 3D solar wind simulation. In the simulation, the high speed solar wind compresses the magnetosphere and magnetic reconnection occurs in the tail as long as at the dayside magnetopause for rapid southward turning of IMF from northward IMF and hot plasmas are injected around the geosynchronous orbit from plasma sheet. Moreover, the magnetosphere and ionosphere coupling and the ionosphere convection in the polar region are discussed in association with geomagnetic storms generated by the solar flare event.
DE: 2753 Numerical modeling
DE: 2784 Solar wind/magnetosphere interactions
DE: 2788 Magnetic storms and substorms (7954)
DE: 7954 Magnetic storms (2788)
DE: 7959 Models
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Fall Meeting