2:30 PM - 2:45 PM
*Jun Kawano1, Akiyuki Ueda2, Takashi Toyofuku3, Yukiko Nagai3, Jun-ya Tanaka4, Takaya Nagai1 (1.Faculty of Science, Hokkaido University, 2.School of Science, Hokkaido University, 3.JAMSTEC, 4.Graduate School of Science, Hokkaido University)