Oral

Symbol A (Atmospheric and Hydrospheric Sciences) » A-CC Cryospheric Sciences & Cold District Environment

[A-CC21] Ice cores and past environmental changes

Wed. May 25, 2016 9:00 AM - 10:30 AM 102 (1F)

Convener:*Kenji Kawamura(National Institute of Polar Research, Research Organization of Information and Systems), Nozomu Takeuchi(Chiba University), Ayako Abe-Ouchi(Atmosphere and Ocean Research Institute, The University of Tokyo), Ikumi Oyabu(National Institute of Polar Research, Research Organization of Information and Systems), Chair:Nozomu Takeuchi(Chiba University), Ayako Abe-Ouchi(Atmosphere and Ocean Research Institute, The University of Tokyo)

Analyses of ice cores from polar and mountain regions have contributed for advancing reconstruction of the past environmental changes on timescales from years to several hundred thousand years, and understanding of the mechanisms behind them. In this session, we discuss environmental changes in the past on the basis of ice core studies and related researches (e.g. sediments and models). Studies on recording processes of paleoenvironmental signals and methods to extract them are also welcomed. Studies with deep-sea cores, terrestrial sediment cores, tree-rings and numerical modelings on similar time and spatial scales are also important and welcomed to discuss past environmental changes from multidisciplinary viewpoints.

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9:00 AM - 9:15 AM

[ACC21-01] Studies on variations of climate and ice sheet under the international deep ice core project at the North East Greenland Ice Stream

*Kumiko Goto-Azuma^1,2, Kenji Kawamura^1,2, Shuji Fujita^1,2, Jun'ichi Okuno^1,2, Ayako Abe-Ouchi³, Ralf Greve⁴, Fuyuki SAITO⁵, Tomoyuki Homma⁶, Nobuhiko Azuma⁶, Hiroyuki Enomoto^1,2, Hideaki Motoyama^1,2, Dorthe Dahl-Jensen⁷ (1.National Institute of Polar Research, 2.SOKENDAI, 3.University of Tokyo, 4.Hokkaido University, 5.JAMSTEC, 6.Nagoka University of Technology, 7.University of Copenhagen)

9:15 AM - 9:30 AM

[ACC21-02] Japanese glaciological activity in Antarctica for the next six years (JARE Phase IX)

*Kenji Kawamura¹, Hideaki Motoyama¹, Kumiko Goto-Azuma¹, Shuji Fujita¹, Dome Fuji Ice Core Consortium (1.National Institute of Polar Research, Research Organization of Information and Systems)

9:30 AM - 9:45 AM

[ACC21-03] Determination of the ice drilling site in the next deep ice coring project of the “oldest ice” at Dome Fuji

*Shuji Fujita^1,2, Kenji Kawamura^1,2, Kumiko Goto-Azuma^1,2, Hideaki Motoyama^1,2, . Dome Fuji Ice Core Consortium³ (1.National Institute of Polar Research, Research Organization of Information and Systems(ROIS), 2.The Graduate University for Advanced Studies (SOKENDAI), 3.Dome Fuji Ice Core Consortium)

9:45 AM - 10:00 AM

[ACC21-04] Ice core drilling and related observations by Jare57 in 2015/2016 austral summer on the coastal region of Antarctic ice sheet

*Hideaki Motoyama^1,2, Kenji Kawamura^1,2, Toshimitsu Sakurai¹, Kenji Sudo², Miho Arai³, Toshitaka Suzuki³ (1.National Institute of Polar Research, 2.Sokendai, 3.Yamagata University)

10:00 AM - 10:15 AM

[ACC21-05] Organic aerosol tracer records in NGRIP ice core during the period from MCA to LIA

★Invited papers

*Osamu Seki¹, Yohei Yamashita², Kimitaka Kawamura¹, Takuro Kobashi⁴, Kumiko Azuma³ (1.Institute of Low Temperature Science, Hokkaido University, 2.Faculty of Environmental Earth Science, 3.National Institution for Polar Research, 4.University of Bern)

10:15 AM - 10:30 AM

[ACC21-06] CH₄ concentrations during the Holocene reconstructed from the NEEM (Greenland) and Dome Fuji (East Antarctica) ice cores

*Ikumi Oyabu¹, Kenji Kawamura¹, Kyotaro Kitamura¹, Shuji Aoki², Takakiyo Nakazawa², Edward J Brook³, Thomas Blunier⁴ (1.National Institute of Polar Research, Research Organization of Information and Systems, 2.Tohoku University, 3.Oregon State University, 4.Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen)