4:45 PM - 5:00 PM
*Osamu KAZAOKA1, Makoto OKADA2, Shun KAMEYAMA1, Yusuke SUGANUMA3, Nobuyuki AIDA4, Masaaki MORISAKI1, Atsushi KAGAWA1, Hisao KUMAI5, Hisashi NIREI6 (1.Research Institute of Environmental Geology, Chiba, 2.Ibaraki University, 3.National Institute of Polar Research, 4.Shumei University, 5.Osaka City University, 6.Officer of IUGS-GEM)