Doshik Hahm, Pusan National University, Department of Oceanography, Busan, Korea, Republic of (South), Tae Siek Rhee, KOPRI Korea Polar Research Institute, Incheon, Korea, Republic of (South), Hyun-cheol Kim, Korea Polar Research Institute, Incheon, South Korea, Chan Joo Jang, KIOST Korea Institute of Ocean Science and Technology, Ansan, Korea, Republic of (South), Yong Sun Kim, Korea Institute of Ocean Science and Technology, Busan, South Korea and Jae-Hun Park, Inha University, Department of Ocean Sciences, Incheon, South Korea