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

[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.