10:15 AM - 10:30 AM
*Naohiko Hirasawa1,2, Keisuke Saito3, Masanori Yabuki4, Hiroyuki Konishi5, Yasushi Fujiyoshi6 (1.National Institute of Polar Research, 2.Graduate University for Advanced Studies (SOKENDAI), 3.Saitama Prefectural Government, 4.Kyoto University, 5.Osaka Kyoiku Univerity, 6.Emeritus Professor, Hokkaido University)