*Yusuke SUGANUMA¹, Makoto OKADA¹, Osamu KAZAOKA², Koji KAMEO³, Martin J. Head⁴, Naohisa NISHIDA⁵, Takeshi YOSHIDA⁶, Itaru OGITSU⁶, Shun KAMEYAMA⁶, Hiroomi NAKAZATO⁷, Kentaro IZUMI⁸, Yoshimi KUBOTA⁹, Manami SUGAYA², Hisashi NIREI⁶, Hisao KUMAI¹⁰ (1.National Institute of Polar Research, 2.Ibaraki Univeristy, 3.Chiba University, 4.Brock University, 5.Geological survery of Japan, AIST, 6.Research Institute of Environmental Geology, 7.National Institute for Rural Engineering, 8.National Institute for Environmental Studies, 9.National Museum of Nature and Science, 10.Osaka City University)

*Kentaro IZUMI¹, Naohisa NISHIDA², Osamu KAZAOKA³, Yusuke SUGANUMA⁴, Makoto OKADA⁵, Takeshi YOSHIDA³, Itaru OGITSU³, Hiroomi NAKAZATO⁶, Shun KAMEYAMA³, Atsushi KAGAWA³, Masaaki MORISAKI³, Masayuki HYODO⁷, Hisashi NIREI⁸ (1.Center for Environmental Biology and Ecosystem Studies, NIES, 2.Institute of Geology and Geoinformation, Geological Survey of Japan, AIST, 3.Research Institute of Environmental Geology, Chiba, 4.National Institute of Polar Research, 5.Department of Earth Sciences, Faculty of Science, Ibaraki University, 6.National Institute for Rural Engineering, 7.Research Center for Inland Seas, Kobe University, 8.International Union of Geological Science for Environmental Management)

*Kentaro IZUMI¹ (1.Center for Environmental Biology and Ecosystem Studies, NIES)

*Kentaro IZUMI¹, David KEMP² (1.Center for Environmental Biology and Ecosystem Studies, NIES, 2.Department of Geology and Petroleum Geology, University of Aberdeen)

*Kentaro IZUMI¹, David KEMP² (1.Center for Environmental Biology and Ecosystem Studies, NIES, 2.Department of Geology and Petroleum Geology, University of Aberdeen)