Japan Geoscience Union Meeting 2016

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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 10:45 AM - 12:15 PM 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:Kenji Kawamura(National Institute of Polar Research, Research Organization of Information and Systems), Ikumi Oyabu(National Institute of Polar Research, Research Organization of Information and Systems)

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.

11:00 AM - 11:15 AM

[ACC21-08] Long-term periodicities in solar activity between 170 and 200 kyr ago reconstructed from 10Be in ice-core and sediment archives

★Invited papers

*Kazuho Horiuchi1, Kanae Kamata1, Shun Maejima1, Sho Sasaki1, Nobuyoshi Sasaki1, Toshitsugu Yamazaki2, Shuji Fujita3, Hideaki Motoyama3, Hiroyuki Matsuzaki4 (1.Graduate School of Science and Technology, Hirosaki University, 2.The Atmosphere and Ocean Research Institute, The University of Tokyo, 3.National Institute of Polar Research, 4.The University Museum, The University of Tokyo)

11:15 AM - 11:30 AM

[ACC21-09] Research of annual cosmic ray events using 10Be in the Dome Fuji ice core

*Fusa Miyake1, Kimiaki Masuda1, Kazuho Horiuchi2, Hideaki Motoyama3, Hiroyuki Matsuzaki4, Yuko MOTIZUKI5, Kazuya Takahashi5, Yoichi Nakai5 (1.Institute for Space-Earth Environmental Research, Nagoya University, 2.Graduate School of Science and Technology, Hirosaki University, 3.National Institute of Polar Research, 4.MALT, University Museum, University of Tokyo, 5.RIKEN)

11:30 AM - 11:45 AM

[ACC21-10] Micro-droplets containing sulfate in the Dome Fuji deep ice core, Antarctica: Findings using micro-Raman spectroscopy

*Toshimitsu Sakurai1,2, Ohno Hiroshi3, Hideaki Motoyama1, Tsutomu Uchida4 (1.National Institute of Polar Research, 2.Institute of Low Temperature Science, Hokkaido University, 3.Department of Civil and Environmental Engineering, Kitami Institute of Technology, 4.Graduate School of Engineering, Hokkaido University)