*Yumiko Harigane¹, Jonathan Snow², Yasuhiko Ohara^3,4,5 (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 2.Louisiana State University, 3.Hydrographic and Oceanographic Department of Japan, 4.JAMSTEC, 5.Nagoya 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)

*Kyoko Okino¹, Tomoaki Morishita², Shiki Machida³, Kentaro Nakamura¹, Yasuhiko Ohara⁴, Kenichiro Tani⁵, Osamu Ishizuka⁶ (1.The University of Tokyo, 2.Kanazawa University, 3.Chiba Instutue of Technology, 4.Japan Coast Guard, 5.National Museum of Nature and Science, 6.National Institute of Advanced Industrial Science and Technology)