*Hinako Hosono¹, Takato Takemura¹, Ken-ichi Hirauchi² (1.Department of Earth and Environmental Sciences, College of Humanities and Sciences, Nihon University, 2.Department of Geosciences, Faculty of Science, Shizuoka University)

*Kiyokazu Oohashi¹, Toru Takeshita², Ken-ichi Hirauchi³ (1.Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2.Graduate School of Science, Hokkaido University, 3.Department of Geoscience, Faculty of Science, Shizuoka University)

*Ryota Hibi¹, Risako Shirahige¹, Ken-ichi Hirauchi¹, Takato Takemura² (1.Department go Geoscience, Faculty of Science, Shizuoka University, 2.Nihon University)

*Yasuhiko Ohara^1,2,3, Kyoko Okino⁴, Norikatsu Akizawa⁴, Masakazu Fujii⁵, Yumiko Harigane⁶, Ken-ichi Hirauchi⁷, Osamu Ishizuka⁶, Shiki Machida⁸, Katsuyoshi Michibayashi³, Alessio Sanfilippo⁹, Sani Camilla⁹, Snow E. Jonathan¹⁰, Kenichiro Tani¹¹, Hiroyuki Yamashita¹² (1.Hydrographic and Oceanographic Department of Japan, 2.Japan Agency for Marine-Earth Science and Technology , 3.Nagoya University, 4.Atmosphere and Ocean Research Institute, University of Tokyo, 5.National Institute of Polar Research , 6.Geological Survey of Japan, AIST, 7.Shizuoka University, 8.Chiba Institute of Technology, 9.University of Pavia, 10.Louisiana State University, 11.National Science Museum, 12.Kanagawa Prefectural Museum of Natural History)

Izumi Segawa¹, *Ken-ichi Hirauchi¹, Yasuhiko Ohara^2,3, Yui Kouketsu³, Katsuyoshi Michibayashi³ (1.Department of Geosciences, Faculty of Science, Shizuoka University, 2.Hydrographic and Oceanographic Department of Japan, 3.Department of Earth & Planetary Sciences, Graduate School of Environmental Studies, Nagoya University)

*Yurina Nagata¹, Kengo Kataoka¹, Ken-ichi Hirauchi¹, Katsuyoshi Michibayashi² (1.Department of Geosciences, Faculty of Science, Shizuoka University, 2.Department of Earth and Planetary Sciences, Graduate School of Environmental Studies, Nagoya University)