[M-IS10] Global climate change driven by the Southern Ocean and the Antarctic Ice Sheet

Fri. May 31, 2024 1:45 PM - 3:00 PM 105 (International Conference Hall, Makuhari Messe)

convener:Kazuya Kusahara(Japan Agency for Marine-Earth Science and Technology), Takeshige Ishiwa(National Institute of Polar Research), Ikumi Oyabu(National Institute of Polar Research, Research Organization of Information and Systems), Osamu Seki(Institute of Low Temperature Science, Hokkaido University), Chairperson:Kazuya Kusahara(Japan Agency for Marine-Earth Science and Technology), Takeshige Ishiwa(National Institute of Polar Research), Ikumi Oyabu(National Institute of Polar Research, Research Organization of Information and Systems), 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, floating 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 a significant impact on changes in the global environmental system. This session aims to summarize recent observational and simulation studies from various fields relating to the past and present changes in the Antarctic Ice sheet and the Southern Ocean, which are essential elements for unraveling the changes in the global climate system. Further, future science plans for understanding the environmental changes of the Antarctic Cryosphere are also discussed.

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1:45 PM - 2:00 PM

[MIS10-12] Changes in the ice sheet of the Wilkes subglacial basin and the high-latitude Southern Ocean during the Last Interglacial

★Invited Papers

*Mutusmi Iizuka¹, Osamu Seki², David J Wilson³, Yusuke Suganuma⁴, Keiji Horikawa⁵, Tina van de Flierdt⁶, Minoru Ikehara⁷, Takuya Itaki¹, Tomohisa Irino², Masanobu Yamamoto², Motohiro Hirabayashi⁴, Hiroyuki Matsuzaki⁸, Saiko Sugisaki¹, Ryosuke Makabe⁴, Motoha Ojima⁴, Shigeru Aoki² (1.The National Institute of Advanced Industrial Science and Technology, 2.Hokkaido University, 3.University College London, 4.National Institute of Polar Research, 5.University of Toyama, 6.Imperial College London, London, 7.Kochi University, 8.The University of Tokyo)

2:00 PM - 2:15 PM

[MIS10-13] Ice sheet/shelf variabilities for the last 2 centuries based on the Be isotope compositions of marine sediments from off Totten Glacier, East Antarctica

*Yuri YAMAZAKI¹, Yusuke SUGANUMA^2,1, Takuya ITAKI³, Atsuko AMANO³, Takeshige ISHIWA^2,1, Kosei E. YAMAGUCHI⁴ (1.The Graduate University for Advanced Studies , 2.National Insititute of Polar Research, 3.Geological Survey of Japan AIST, 4.Toho University)

2:15 PM - 2:30 PM

[MIS10-14] Holocene paleoenvironment changes near Lake Funazoko-Ike, East Antarctica

*Satoshi Sasaki¹, Koji Seto², Kota Katsuki² (1.Gunma University, 2. Estuary Research Center, Shimane University)

2:30 PM - 2:45 PM

[MIS10-15] Pliocene Western Antarctic Ice History: Diatoms at Site U1532 in Amundsen Sea and its implications

*Masao IWAI¹, Keiji Horikawa² (1.Marine Core Research Institute, Kochi University, 2.Toyama University)

2:45 PM - 3:00 PM

[MIS10-16] High-resolution record of the radiolarian Cycladophora davisiana curve in the Southern Ocean acquired using a high-throughput virtual slide scanner and deep learning

*Takuya Itaki¹, Ayumu Miyakawa¹, Minoru Ikehara³, Hiroki Matsui⁴, Yusuke Suganuma² (1.Geological Survey of Japan, AIST, 2.National Institute of Polar Research, 3.Kochi University, 4.Akita University)

Session information