[M-IS06] Global climate change driven by the Southern Ocean and the Antarctic Ice Sheet

Mon. May 21, 2018 9:00 AM - 10:30 AM 302 (3F International Conference Hall, Makuhari Messe)

convener:Osamu Seki(Institute of Low Temperature Science, Hokkaido University), Akira Oka(Atmosphere and Ocean Research Institute, The University of Tokyo), Ryosuke Makabe(国立極地研究所, 共同), Ryu Uemura(University of the Ryukyus), Chairperson:Nogi Yoshifumi(National Institute of Polar Research), Seki Osamu(Institute of Low Temperature Science, Hokkaido University), Matsui Hiroki(Kochi 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

[MIS06-01] Do submarine volcanism in mid-ocean ridges impact global climate change? –Heading toward detection of topographic variation in precisely aged seafloor

*Masakazu Fujii^1,2, Arata Kioka³, Toshitsugu Yamazaki⁴, Kyoko Okino⁴, Chiori Tamura⁴, Osamu Seki⁵, Yoshifumi Nogi^1,2, Jun'ichi Okuno^1,2, Takeshige Ishiwa¹, Ikumi Oyabu¹ (1.National Institute of Polar Research / SOKENDAI, 2.The Graduate University for Advanced Studies (SOKENDAI), 3.Leopold-Franzens-Universität Innsbruck, 4.Atmosphere and Ocean Research Institute, The University of Tokyo, 5.Institute of Low Temperature Science, Hokkaido University)

9:15 AM - 9:30 AM

[MIS06-02] Toward under ice exploration using a high-mobility lightweight AUV

*Toshihiro Maki¹, Hiroshi Yoshida², Yutaka Ohta², Yukiyasu Noguchi¹, Yoshifumi Nogi³ (1.The University of Tokyo, 2.Japan Agency for Marine-Earth Science and Technology, 3.National Institute of Polar Research)

9:30 AM - 9:45 AM

[MIS06-03] Large impact of the Agulhas Return Current on SW Indian sector of the Southern Ocean during late glacial

*Minoru Ikehara¹, Xavier Crosta², Sunil Shukla^3,2, Katsunori Kimoto⁴, Takuya Itaki⁵, Hiroki Matsui¹, M.C. Manoj³ (1.Center for Advanced Marine Core Research, Kochi University, 2.Université Bordeaux 1, 3.Birbal Sahni Institute of Palaeosciences, 4.JAMSTEC, 5.AIST)

9:45 AM - 10:00 AM

[MIS06-04] Impact of climate and natural iron fertilization on siliceous productivity off Kerguelen Archipelago, Southern Ocean, over the last 40 000 years

*Matthieu Civel⁵, Xavier Crosta¹, Giuseppe Cortese², Elisabeth Michel³, Alain Mazaud³, Samuel Jaccard⁴, Lena Thöle⁴, Minoru Ikehara⁵ (1.UMR 5805 CNRS EPOC, Université de Bordeaux, France, 2.GNS Science, Lower Hutt, New Zealand, 3.LSCE-IPSL, CEA-CNRS-UVSQ, 91198 Gif-sur-Yvette, France, 4.Institute of Geological Sciences & Oeschger Centre for Climate Change Research, University of Bern, Switzerland, 5.Center for Advanced Marine Core Research, Kochi University, Japan)

10:00 AM - 10:15 AM

[MIS06-05] Impact of glacial dust on the oceanic iron and carbon cycles at the Last Glacial Maximum

*Akitomo Yamamoto¹, Ayako Abe-Ouchi^2,1, Rumi Ohgaito¹, Akinori Ito¹ (1.Japan Agency for Marine-Earth Science and TechnologyAtmosphere and Ocean Research Institute, 2.Atmosphere and Ocean Research Institute, The University of Tokyo)

10:15 AM - 10:30 AM

[MIS06-06] The paleoceanographic reconstruction in the late Miocene–Pliocene Southern Ocean based on siliceous microfossil assemblages

*Yuji Kato¹, Itsuki Suto¹ (1.Graduate School of Environmental Studies, Nagoya University)

Session information