4:00 PM - 4:15 PM
*Kazuho Horiuchi1, Tomoko Uchida2, Ai Sugawara1, Shoko Seino1, Saya Matsuda1, Hiroyuki Matsuzaki3, Hideaki Motoyama4 (1.Graduate School of Science and Technology, Hirosaki University, 2.Institute of Geology and Paleontology, Tohoku University, 3.MALT, The University of Tokyo, 4.National Institute of Polar Research)