[M-IS21] Southern Ocean and Antarctic Ice Sheet Science

Fri. May 29, 2026 10:45 AM - 12:15 PM 104 (International Conference Hall, Makuhari Messe)

Chairperson:Matsui Hiroki(Graduate School of International Resource Sciences, Akita University), Oyabu Ikumi(National Institute of Polar Research, Research Organization of Information and Systems)

The Southern Ocean and the Antarctic ice sheet are giant reservoirs of heat, water, and materials that play a central role in long-term climate change. This system comprises several sub-systems including the ice shelf, floating icebergs, the seasonal sea ice zone, active biological production, Antarctic bottom water, and the Antarctic Circumpolar Current. These sub-systems interact with each other and have a significant impact on changes in the Earth's environmental system. The aim of this session is to improve understanding of past, present, and future changes in the Antarctic ice sheet and the Southern Ocean through presentations on topics such as paleoenvironmental reconstruction, recent observational studies, and climate modeling. Presentations from students and early-career scientists are welcomed to widen the research community in the field of the Southern Ocean and the Antarctica. The session will facilitate interaction between researchers (including students) studying different sub-systems and research fields, promoting cross-disciplinary discussion. This session is assigned as a Japanese session, but presentations in English are also welcome.

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10:45 AM - 11:15 AM

[MIS21-01] Paleoecosystem Changes and Ice-Sheet Dynamics Based on seda-DNA from Lake Nurume in the Langhovde Ice-Free Area, Showa Coast, East Antarctica

★Invited Papers

*Hiroto Kajita¹, Yasuhide Nakamura², Sakae Kudoh^3,4, Kenichi Watanabe³, Ayumi Maeda⁵, Ken Kondo⁶, Shin Sugiyama⁷, Takeshige Ishiwa^4,3, Yuki Tokuda⁸, Takuya Itaki⁹, Satoshi Sasaki¹⁰, Kota Katsuki², Yusuke Suganuma^3,4 (1. Hirosaki University, 2. Shimane University, 3. National Institute of Polar Research, 4. The Graduate University for Advanced Studies (SOKENDAI), 5. The University of Tokyo, 6. Nagoya University, 7. Hokkaido University, 8. Tottori University of Environmental Studies, 9. Geological Survey of Japan, 10. Gunma University)

11:15 AM - 11:30 AM

[MIS21-02] Reconstructing Holocene paleolimnological changes and ice-sheet history in Lake Maruwan-Oike, Soya Coast, East Antarctica

*Issei Arita¹, Hiroto Kajita¹, Kota Katsuki², Yusuke Suganuma^3,4, Takeshige Ishiwa^3,4, Daisuke Shibata⁵ (1. Hirosaki University, 2. Shimane University, 3. The Graduate University for Advanced Studies, 4. National Institute of Polar Research, 5. Kanagawa Institute of Technology)

11:30 AM - 11:45 AM

[MIS21-03] Eddy-related processes in the Cape Darnley polynya, leading to Antarctic Bottom Water formation.

*Masashi Machida¹, Kay I. Ohshima², Daisuke Simizu³, Kazuki Nakata⁴, Alex Fraser⁵, Takeshi Tamura³, Shigeru Aoki², Yasushi Fukamachi⁶ (1. Graduate School of Environmental Science,Hokkaido University, 2. Institute of Low Temperature Science,Hokkaido University, 3. National Institute of Polar Research, 4. Earth Observation Research Center, Japan Aerospace Exploration Agency, 5. Institute for Marine and Antarctic Studies, University of Tasmania, 6. Arctic Research Center,Hokkaido University)

11:45 AM - 12:00 PM

[MIS21-04] Bottom Water Formation and Carbon Transport along the Antarctic Peninsula Continental Shelf in the Weddell Sea during winter

*Yu Makino¹, Daiki Nomura², Naomi Harada¹ (1. Graduate School of Frontier Sciences The University of Tokyo, 2. Faculty of Fisheries Sciences, Hokkaido University)

12:00 PM - 12:15 PM

[MIS21-05] organic matter production in the Southern Ocean

*Nakamura Kanon¹, Ayumi Maeda², SIJUN CHEN², Miyako Sato³, Kohei Mizobata⁴, Ryosuke Makabe⁵, Naomi Harada² (1. Graduate School of Frontier Sciences The University of Tokyo, 2. Atmosphere and Ocean Research Institute, The University of Tokyo, 3. Japan Agency for Marine-Earth Science and Technology, 4. Tokyo University of Marine Science and Technology, 5. National Institute of Polar Research)

Session information