Japan Geoscience Union Meeting 2019

Presentation information

[J] Oral

M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS14] Global climate change driven by the Southern Ocean and the Antarctic Ice Sheet

Mon. May 27, 2019 10:45 AM - 12:15 PM Convention Hall B (2F)

convener:Osamu Seki(Institute of Low Temperature Science, Hokkaido University), Akira Oka(Atmosphere and Ocean Research Institute, The University of Tokyo), Ryu Uemura(University of the Ryukyus), Ryosuke Makabe(National Institute of Polar Research), Chairperson:Sam Sherriff-Tadano(University of Tokyo)

11:15 AM - 11:30 AM

[MIS14-08] Reconstruction of the East Antarctic ice sheet variability during the last 3 myrs in the central & eastern Droning Maud Land, East Antarctica

*Yusuke Suganuma1,2, Moto Kawamata2, Kota Katsuki3, Tatsuo Kanamaru4, Heitaro Kaneda5, Takushi Koyama6, Tanabe Yukiko1,2, Daisuke Shibata7, Takeshige Ishiwa1, Takuya Itaki8, Jun'ichi Okuno1,2, Osamu Seki9, Itsuki Suto10, Masakazu Fujii1,2, Hideki Miura1,2 (1.National institute of Polar Research, 2.SOKENDAI, 3.Shimane University, 4.Nihon University, 5.Chiba University, 6.Oita University, 7.Tsukuba University, 8.GSJ, AIST, 9.Hokkaido University, 10.Nagoya University)

Keywords:Giant Reservoirs - Antarctic, Solid Earth

Reconstructing past variability of the Antarctic ice sheets is essential to understand their stability and to anticipate their contribution to future sea level rise. However, magnitude and timing of ice sheet changes during the last several million years have not been well constrained, especially in central & eastern Droning Maud Land, East Antarctica. Recently, we have carried out several field campaigns in this area to reconstruct changes in thickness, geographical extent, and timing of retreat of the East Antarctic Ice Sheet based on the detailed geomorphological survey, cosmogenic exposure dating, and lake/shallow marine sediment records coupled with glacial isostatic adjustment modeling (GIA). In this presentation, we will introduce these recent achievements from the field campaigns and discuss scientific plans for the next few seasons.