10:15 AM - 10:30 AM
*Mitsuteru Sato1, Chiharu Shimizu2, Fuminori Tsuchiya3, Noriyasu Honma4, Yasuji Hongo4, Yukihiro Takahashi1 (1.Faculty of Science, Hokkaido University, 2.Department of Cosmosciences, Hokkaido University, 3.Planetary Plasma and Atmospheric Research Center, Graduate School of Science, Tohoku University, 4.Tohoku Electric Power Company)