11:00 AM - 11:15 AM
*Masashi Ikeda1, Ken Sawada2, Takuto Ando3, Hideto Nakamura4, Reishi Takashima5, Hiroshi Nishi5 (1.Graduate School of Science, Hokkaido University, 2.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, 3.Arctic Research Center, Hokkaido University, 4.Faculty of Science, Osaka City University, 5.The Center for Academic Resources and Archives, The Tohoku University Museum, Tohoku University)