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 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)

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 Motoyama1,2, Kenji Kawamura1,2, Toshimitsu Sakurai1, Kenji Sudo2, Miho Arai3, Toshitaka Suzuki3 (1.National Institute of Polar Research, 2.Sokendai, 3.Yamagata University)

Keywords:Antarctic ice sheet, ice core drilling, firn air sampling

We were carried out an ice core drilling on the coastal region of Antarctic ice sheet as a part of the 57th of Japanese Antarctic Research Expeditions (2015/2016 of austral summer). We selected the H128 site for drill site (69.40S, 41.55E, 1,380m a.s.l . 100km inland from the coast). Advantages of H128 site were as below; high time resolution, few changes of annual snow accumulation rates, low annual mean temperature (10m depth ice temperature) -24 C. We finally drilled to 260m in depth. We will be able to analyze the climate changes of past 2000 years. Firn air samplings were also carried out. We also conducted the borehole logging, snow pit observation, setup of automatic weather station.