[M-IS08] Global climate change driven by the Southern Ocean and the Antarctic Ice Sheet

Fri. May 26, 2023 9:00 AM - 10:30 AM 103 (International Conference Hall, Makuhari Messe)

convener:Kazuya Kusahara(Japan Agency for Marine-Earth Science and Technology), Masahiro Minowa(Institute of Low Temperature Science, Hokkaido University), Yoshifumi Nogi(National Institute of Polar Research), Osamu Seki(Institute of Low Temperature Science, Hokkaido University), Chairperson:Osamu Seki(Institute of Low Temperature Science, Hokkaido University)

The Southern Ocean and Antarctic ice sheet, which are the giant reservoirs of heat, water, and materials, have a potential to play central roles in long-term global climate change. This system is composed of the following sub-systems; ice shelf which is a place of the interaction of ice sheet and ocean, flowing iceberg, seasonal sea ice zone, Antarctic bottom water which drives the thermohaline circulation, active biological production and Antarctic Circumpolar Current. These sub-systems are interacted with each other and have significant impact on changes in the global environmental system. This session aim to summarize recent observational and simulation studies from various fields relating to the past and present changes in the Antarctic Ice sheet and Southern Ocean, which are essential elements for unraveling the changes in the global climate system. Further, future science plans for understanding of the environmental changes of the Antarctic Cryosphere is also discussed.

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9:00 AM - 9:15 AM

[MIS08-01] Temporal variations of surface mass balance over the last 5000 years around Dome Fuji, Dronning Maud Land, East Antarctica

★Invited Papers

*Ikumi Oyabu¹, Kenji Kawamura^1,2,3, Shuji Fujita^1,2, Ryo Inoue², Hideaki Motoyama^1,2, Kotaro Fukui⁴, Motohiro Hirabayashi¹, Hoshina Yu⁵, Naoyuki Kurita⁵, Fumio Nakazawa^1,2, Hiroshi Ohno⁶, Konosuke Sugiura⁷, Toshitaka Suzuki⁸, Shun Tsutaki^1,2, Ayako Abe-Ouchi⁹, Masashi Niwano¹⁰, Frédéric Parrenin¹¹, Fuyuki SAITO³, Masakazu Yoshimori⁹ (1.National Institute of Polar Research, Research Organization of Information and Systems, 2.The Graduate University for Advanced Studies, SOKENDAI, 3.Japan Agency for Marine Science and Technology, 4.Tateyama Caldera Sabo Museum, 5.Nagoya University, 6.Kitami Institute of Technology, 7.University of Toyama, 8.Yamagata University, 9.Atmosphere and Ocean Research Institute, The University of Tokyo, 10.Meteorological Research Institute, Japan Meteorological Agency, 11.Institut des Géosciences de l'Environnement, Université Grenoble Alpes)

9:15 AM - 9:30 AM

[MIS08-02] Southern Ocean fronts and temperatures during MIS 11 interglacial

*Hiroki Matsui¹, Isabelle Billy², Olivier Ther², Xavier Crosta², Keiji Horikawa³, Minoru Ikehara⁴ (1.Graduate School of International Resource Sciences, Akita University, 2.University of Bordeaux, France, 3.Faculty of Science, Academic Assembly, University of Toyama, 4.Center for Advanced Marine Core Research, Kochi University)

9:30 AM - 9:45 AM

[MIS08-03] West Antarctic Ice Sheet dynamics in the glacial–interglacial cycles during the Mid Pliocene: Results from Amundsen Sea sediment cores

*Keiji Horikawa¹, Masao IWAI², Yoshihiro Asahara³, Claus-Dieter Hillenbrand⁴, Ellen Cowan⁵, Christine Siddoway⁶ (1.Graduate School of Engineer and Science, University of Toyama, 2.Kochi University, 3.Nagoya University, 4.British Antarctic Survey, 5.Appalachian State University, 6.Colorado College)

9:45 AM - 10:00 AM

[MIS08-04] Reconstruction of East Antarctic ice sheet retreating in the Holocene from the lake sediments in Schirmacher Oasis, East Antarctica

Yuito Kamada¹, *Kota Katsuki², Yusuke Suganuma³, Heitaro Kaneda⁴, Minoru Ikehara⁵ (1.Shimane University, 2.Estuary Research Center, Shimane University, 3.National Institute of Polar Research, 4.Chuo University, 5.Kochi University)

10:00 AM - 10:15 AM

[MIS08-05] Holocene deglaciation induced by Circumpolar Deep Water in Lutzow-Holm Bay, East Antarctica

*Yusuke Suganuma^1,2, Moto Kawamata³, Kazuya Kusahara⁵, Nathaniel A Lifton⁶, Takeshige Ishiwa^1,2, Kota Katsuki⁴, Masakazu Fujii^1,2, Motohiro Hirabayashi¹, Jun'ichi Okuno^1,2 (1.National institute of Polar Research, 2.The Graduate University for Advanced Studies (SOKENDAI), 3.Civil Engineering Research Institute for Cold Region, 4.Shimane University, 5.JAMSTEC, 6.Department of Earth, Atmospheric, and Planetary Sciences, Purdue University)

10:15 AM - 10:30 AM

[MIS08-06] A one-dimensional temperature and age modeling study for selecting the drill site of the oldest ice core near Dome Fuji, Antarctica

*Takashi Obase¹, Ayako Abe-Ouchi^1,2, Fuyuki SAITO³, Shun Tsutaki^2,4, Shuji Fujita^2,4, Kenji Kawamura^2,3,4, Hideaki motoyama^2,4 (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.National Institute of Polar Research, Research Organization of Information and Systems, 3.Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 4.The Graduate University for Advanced Studies, SOKENDAI)

Session information