*Takeyoshi Nagai¹, Daisuke Hasegawa², Eisuke Tsutsumi³, Hirohiko Nakamura⁴, Ayako Nishina⁴, Tomoharu Senjyu³, Takahiro Endoh³, Takeshi Matsuno³, Ryuichiro Inoue⁵, Amit Tandon⁶ (1.Department of Ocean Sciences, Tokyo University of Marine Science and Technology, 2.Tohoku National Fisheries Research Institute, Japan Fisheries Research and Education Agency, 3.Kyushu University, Research Institute for Applied Mechanics, 4.Faculty of Fisheries Kagoshima University, 5.Ocean Circulation Research Group, Japan Agency for Marine-Earth Science and Technology, 6.Mechanical Engineering Department & SMAST, University of Massachusetts Dartmouth)