6:15 PM - 7:30 PM
*Masataka HAKOZAKI1, Toshio NAKAMURA1, Katsuhiko KIMURA2, Takeshi NAKATSUKA3, Fusa MIYAKE4, Kimiaki MASUDA4 (1.Center for Chronological Research, Nagoya University, 2.Faculty of Symbiotic Systems Science, Fukushima University, 3.Research Institute for Humanity and Nature, 4.Solar-Terrestrial Environment Laboratory, Nagoya University)