JpGU-AGU Joint Meeting 2017

Presentation information

[EJ] Oral

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

[A-CC37] [EJ] Ice cores and past environmental changes

Tue. May 23, 2017 3:30 PM - 5:00 PM A08 (Tokyo Bay Makuhari Hall)

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), Chairperson:Akane Tsushima(Research Institute for Humanity and Nature)

4:45 PM - 5:00 PM

[ACC37-16] Preliminary report on the ice core drilling in Pamir-Arai Mountains, Central Asia in 2016

*Nozomu Takeuchi1, Koji Fujita2, Kenji Kawamura3, Akane Tsushima4, Kenshiro Miyauchi1, YOICHIRO HORI1, Vladimir Aizen5, Azamat Osmonov6 (1.Chiba University, 2.Nagoya University, 3.National Institute of Polar Research, 4.Research Institute for Humanity and Nature, 5.University of Idaho, 6.Central Asian Institute of Applied Geo-Science)

Keywords:central asia, ice core, Pamir

In order to reconstruct local climate change in the western area of the Asian high mountain region, three ice cores were recovered from an ice cap in Pamir-Arai Mountains in Kyrgyz Republic, Central Asia in summer of 2016. The drilling site was located at 5300 m asl on a small ice cap in 20 km west from Mt. Lenin. The first drilling was stopped at 7 m in depth due to appearance of melt water in the firn layers. The second drilling was stopped at 12 m in depth due to crevasse. The third core was successfully reached to the bottom of the ice cap. The depth was 37 m. The borehole temperature was -6.3C at the bottom. Results show that the snow was melt and refrozen at this elevation and the quality of the core was not as good as expected.