*IJIN KANG¹, Kaoru Kashima², Koji Seto³, Yukinori Tani⁴, Takahiro Watanabe⁵, Toshio Nakamura⁶, Satoshi Imura⁷, Genki I. Matsumoto⁸ (1.Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University, 2.Department of Earth and Planetary Sciences, Faculty of Sciences, Kyushu University, 3.Research Center for Coastal Lagoon Environments, Shimane University, 4.Institute of Environmental Sciences, University of Shizuoka, 5.Japan Atomic Energy Agency, 6.Center for Chronological Research, Nagoya University, 7.National Institute of Polar Research, 8.School of Social Information Studies, Otsuma Women’s University)

*IJIN KANG¹, Kaoru Kashima², Koji Seto³, Yukinori Tani⁴, Takahiro Watanabe⁵, Toshio Nakamura⁶, Satoshi Imura⁷, Genki I. Matsumoto⁸ (1.Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University, 2.Department of Earth and Planetary Sciences, Faculty of Sciences, Kyushu University, 3.Research Center for Coastal Lagoon Environments, Shimane University, 4.Institute of Environmental Sciences, University of Shizuoka, 5.Japan Atomic Energy Agency, 6.Center for Chronological Research, Nagoya University, 7.National Institute of Polar Research, 8.School of Social Information Studies, Otsuma Women’s University)

*Cho Ara¹, Deakyo Cheong³, JinCheul Kim², DongYoon Yang², JinYoung Lee², Kaoru Kashima¹, Kota Katsuki⁴ (1.Kyushu University, 2.Korea Institute of Geoscience and Mineral Resources, 3.Kangwon National University, 4.Shimane University)

*Cho Ara¹, Deakyo Cheong³, JinCheul Kim², DongYoon Yang², JinYoung Lee², Kaoru Kashima¹, Kota Katsuki⁴ (1.Kyushu University, 2.Korea Institute of Geoscience and Mineral Resources, 3.Kangwon National University, 4.Shimane University)