1. Solar-Terrestrial Environment Laboratory; Nagoya University; Nagoya Japan
2. Geophysical Institute; University of Alaska Fairbanks; Alaska USA
3. Planetary Plasma and Atmospheric Research Center, Graduate School of Science; Tohoku University; Sendai Japan
4. Department of Space Plasma Physics, Japan Aerospace Exploration Agency; Institute of Space and Astronautical Science; Kanagawa Japan
5. Department of Earth and Planetary Science, Graduate School of Science; University of Tokyo; Tokyo Japan
6. Planetary Atmosphere Physics Laboratory, Graduate School of Science; Tohoku University; Sendai Japan