Oral

Symbol A (Atmospheric, Ocean, and Environmental Sciences) » A-CC Cryospheric Sciences & Cold District Environment

[A-CC32_29PM1] Past environmental changes through ice core studies

Tue. Apr 29, 2014 2:15 PM - 4:00 PM 419 (4F)

Convener:*Kenji Kawamura(National Institute of Polar Research, Research Organization of Information and Systems), Minoru Ikehara(Center for Advanced Marine Core Research, Kochi University), Nozomu Takeuchi(Chiba University), Ayako Abe-Ouchi(Atmosphere and Ocean Research Institute, The University of Tokyo), Takuro Kobashi(National Institute of Polar Research), Chair:Nozomu Takeuchi(Chiba University), Kenji Kawamura(National Institute of Polar Research, Research Organization of Information and Systems), Takuro Kobashi(National Institute of Polar Research)

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. 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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2:15 PM - 2:30 PM

[ACC32-01] Digital-image processing to analyze grain size variation in ice core from Gregoriev Ice Cap, Kyrgyz Tien Shan

*Yuta MATSUHASHI¹, Koji FUJITA¹, Nozomu TAKEUCHI², Aizen VLADIMIR B³ (1.Nagoya University, 2.Chiba University, 3.University of Idaho)

2:30 PM - 2:45 PM

[ACC32-02] Post-depositional alteration of major ions under different accumulation environment in Antarctica

*Yu HOSHINA¹, Koji FUJITA¹, Yoshinori IIZUKA², Hideaki MOTOYAMA³ (1.Nagoya University, 2.Institute of Low Temperature Science, Hokkaido University, 3.National Institute of Polar Research)

2:45 PM - 3:00 PM

[ACC32-03] Greenland temperature variability over the past 2000 years inferred from NGRIP and GISP2 ice cores

*Takuro KOBASHI¹, Kumiko GOTO-AZUMA¹, Kenji KAWAMURA¹, Bo VINTHER², Thomas BLUNIER², Jason BOX³, Christo BUIZERT⁴, Atsuhiro MUTO⁵, James WHITE⁶ (1.National Institute of Polar Reseaerch, 2.Copenhagen University, 3.Geological Survey of Denmark and Greenland, 4.Oregon State University, 5.Pennsylvania state University, 6.University of Colorado at Boulder)

3:00 PM - 3:15 PM

[ACC32-04] Greenland temperature variations in the last millennium climate simulation

*Masakazu YOSHIMORI¹, Ayako ABE-OUCHI¹ (1.Atmosphere and Ocean Research Institute, The University of Tokyo)

3:15 PM - 3:30 PM

[ACC32-05] The variation of the Arctic cryosphere in the Last Millennium simulation using MIROC and MIROC-ESM

*Tetsuo SUEYOSHI¹, Rumi OHGAITO¹, Masakazu YOSHIMORI², Tomohiro HAJIMA¹, Manabu ABE³, Ryouta O'ISHI³, Hideki OKAJIMA¹, Fuyuki SAITO¹, Shingo WATANABE¹, Michio KAWAMIYA¹, Ayako ABE-OUCHI² (1.Japan Agency for Marine-Earth Science and Technology, 2.Atmosphere and Ocean Research Institute, University of Tokyo, 3.National Institute of Polar Research)

3:30 PM - 3:45 PM

★ [ACC32-06] A long-term ¹⁰Be record from Dome Fuji ice core and cosmic-ray stratigraphy

*Kazuho HORIUCHI¹, Shota SUGUCHI¹, Kensuke SUDA¹, Tomoko UCHIDA², Takahiro AZE³, Yusuke YOKOYAMA⁴, Yasuyuki MURAMATSU⁵, Hiroyuki MATSUZAKI⁶, Hideaki MOTOYAMA⁷ (1.Graduate School of Science and Technology, Hirosaki University, 2.Institute of Geology and Paleontology, Tohoku University, 3.Graduate School of Science and Engineering, Tokyo Institute of Technology, 4.Atmosphere and Ocean Research Institute, The University of Tokyo, 5.Faculty of Science, Gakushuin University, 6.Graduate School of Engineering, The University of Toky, 7.National Institute of Polar Research)

3:45 PM - 4:00 PM

[ACC32-07] Age synchronization between an Antarctic ice core and Northern Hemisphere marine cores: with special focus on MIS 11

*Kenji KAWAMURA¹, Shuji AOKI², Takakiyo NAKAZAWA², Ayako ABE-OUCHI³, Fuyuki SAITO⁴ (1.National Institute of Polar Research, 2.Tohoku University, 3.University of Tokyo, 4.JAMSTEC)