*Soyeon Kim¹, Hyunwoo Lee¹, Dongwhan Kim^1,3, Wonhee Lee¹, Sung-Hyun Park², Naoto Takahata³, Kenji Shimizu⁴, Takayuki Ushikubo⁴, Yuji Sano⁵, Tobias P. Fischer⁶ (1.School of Earth and Environmental Sciences, Seoul National University, Republic of Korea, 2.Korea Polar Research Institute, Republic of Korea, 3.Atmosphere and Ocean Research Institute, The University of Tokyo, Japan, 4.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, Japan, 5.Marine Core Research Institute, Kochi University, Japan, 6.Department of Earth and Planetary Sciences, University of New Mexico, USA)

*Donghwan Kim^1,2, Sung-Hyun Park³, Naoto Takahata¹, Hyunwoo Lee² (1.Atmosphere and Ocean Research Institute, University of Tokyo, 2.Seoul National University, 3.Korea Polar Research Institute)