*Masaya Inagaki1, Masanobu Yamamoto1,2, Takeshi Nakagawa3 (1.Graduate School of Environmental Science, Hokkaido University, 2.Faculty of Environmental Earth Science, Hokkaido University, 3.Research Center for Palaeoclimatology, Ritsumeikan University)
convener:Masanobu Yamamoto(Faculty of Environmental Earth Science, Hokkaido University), Ryuji Tada(Department of Earth and Planetary Science, Graduate School of Science, The Univeristy of Tokyo)