*Kevin Lariosa Garas¹, Tsuyoshi Watanabe ^2,3,6, Atsuko Yamazaki^4,6, Yolanda Maac Aguilar¹, Tomoki Kase⁵ (1.Mines and Geosciences Bureau - Philippines, 2.Hokkaido University, Japan , 3.Research Institute for Humanity and Nature, Japan , 4.Nagoya University, Japan , 5.Natural History Museum of Tokyo, Japan , 6.Kikai Institute for Coral Reef Sciences, Japan )

*Sophie Debaecker¹, Nathalie Feuillet², Kenji Satake³, Kohki Sowa⁴, Masaki Yamada⁵, Tetsuro Sato⁶, Atsushi Watanabe³, Ayaka Saiki³, Jean-Marie Saurel², Mamoru Nakamura⁷, Giovanni Occhipinti², Tsai-Luen Yu^8,9, Chuan-Chou Shen^8,9 (1.Littoral Environnement et Societes (LIENSs), UMR 7266 CNRS, La Rochelle Université, La Rochelle, France, 2.Institut de Physique du Globe de Paris, Université de Paris, Paris, France, 3.Earthquake Research Institute, The University of Tokyo, Tokyo, Japan, 4.Ministry of the Environment, Japan, 5.Department of Geology, Faculty of Science, Shinshu University, Matsumoto, Japan, 6.Department of Earth Sciences, School of Education, Waseda University, Tokyo, Japan, 7.University of the Ryukyu, Okinawa, Japan, 8.National Taiwan University, High-Precision Mass Spectrometry and Environment Change Laboratory (HISPEC), Taipei, Taiwan ROC, 9.National Taiwan University, Research Center for Future Earth, Taipei, Taiwan ROC)

*James Goff^1,2 (1.University of New South Wales, Australia, 2.University of Southampton, UK)

*Tetsuro Sato¹, Norihiro Nakamura², Masahiko Sato³, Kazuhisa Goto³, Masashi Watanabe⁴, Kenji Satake³, Taaniela Kula⁵ (1.Waseda University, 2.Tohoku Gakuin University, 3.University of Tokyo, 4.Nanyang Technological University, 5.Ministry of Lands and Natural Resources)

*Kazuhisa Goto¹, James Goff², Joji S. Malodali³, Nilesh Kumar⁴, Takashi Ishizawa⁵, Katsumi Kasai¹, Koki Nakata¹ (1.Department of Earth and Planetary Science, The University of Tokyo, 2.University of New South Wales, 3.Mineral Resource Department, 4.University of the South Pacific, 5.Tohoku University)