12:10 PM - 12:25 PM
*Keiko SATO1, Hidenori KUMAGAI2, Naoyoshi IWATA3, Hironobu HYODO4, Katsuhiko SUZUKI2, Nobuo TAKAOKA5 (1.JAMSTEC, SRRP, 2.JAMSTEC, IFREE, 3.Faculty of Science, Yamagata University, 4.Okayama University of Science, 5.Faculty of Science, Kyusyu University)