*Yasuhiko Ohara^1,2,3, Yumiko Harigane⁴, Katsuyoshi Michibayashi³, Kyoko Okino⁵, Ryosuke Oyanagi⁶, Alessio Sanfilippo⁷, Jonathan E. Snow⁸, Marco Cuffaro⁹, Kohei Nimura³, Takaaki Moriguchi⁵ (1.Hydrographic and Oceanographic Department of Japan, 2.Japan Agency for Marine-Earth Science and Technology , 3.Nagoya University, 4.Geological Survey of Japan, 5.Atmosphere and Ocean Research Institute, University of Tokyo, 6.Kokushikan University, 7.University of Pavia, 8.Louisiana State University, 9.Institute of Environmental Geology and Geoengineering, National Research Council)

*Takaaki Moriguchi¹, Kyoko Okino¹, Yasuhiko Ohara², Yumiko Harigane³, Matamura Yuki⁴ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Hydrographic and Oceanographic Department of Japan /JAMSTEC/ Nagoya University, 3.Geological Survey of Japan, AIST, 4.Tohoku University)

*Kyoko Okino¹, Yasuhiko Ohara², Yumiko Harigane³, Osamu Ishizuka³, Kenichiro Tani⁴, Masakazu Fujii⁵, Takaaki Moriguchi¹ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Japan Coast Guard/JAMSTEC/Nagoya University , 3.Geological Survey of Japan, AIST, 4.National Museum of Nature and Science, 5.National Institute of Polar Research)