Gerlien Verhaegen¹, Wuju Son², Jee-Hoon Kim², Kyoung-Ho Cho², Eun Jin Yang², Dmitrii Pantiukhin³ and Hyoung Sul La², (1)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Advanced Institute for Marine Ecosystem Change (WPI-AIMEC), Yokohama, Japan, (2)Korea Polar Research Institute, Incheon, South Korea, (3)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany