Improvements to the JARE deep ice core drill

• Main Authors: Akiyoshi Takahashi, Yoshiyuki Fujii, Nobuhiko Azuma, Hideaki Motoyama, Kunio Shinbori, Yoichi Tanaka, Hideki Narita, Yoshiki Nakayama, Takao Kameda, Shuji Fujita, Teruo Furukawa, Morimasa Takata, Morihiro Miyahara, Okitsugu Watanabe
• Format: Report
• Language: English
• Published: Geo Tecs Co. Ltd./National Institute of Polar Research/NagaokaUniversity of Technology/National Institute of Polar Research/Institute of Low Temperature Science, Hokkaido University/Geosystems Inc. /Institute of Low Temperature Science, Hokkaido University /Nippon Public Co., Ltd/Kitami Institute of Technology/Department of Applied Physics, Graduate School of Engineering, Hokkaido University/National Institute of Polar Research/National Institute of Polar Research /Atec Co. Ltd./National Institute of Polar Research 2002
• Subjects: Dome Fuji; Antarc*; Antarctica; ice core; Memoirs of National Institute of Polar Research; Polar Research
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2435; http://id.nii.ac.jp/1291/00002435/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2435&item_no=1&attribute_id=18&file_no=1

The second phase of the deep ice core drilling at Dome Fuji, Antarctica is planned to be carried out in three successive summer seasons starting from 2003/2004 with an improved JARE deep ice core drill. On the basis of tests, major improvements were made including extension of the core barrel to 4m, addition of a more powerful chip-collecting pump, addition of a check valve to avoid loss of collected chips while hoisting the drill in borehole liquid, and a more powerful drill motor. This report describes the improvements and results of the tests as of December 2000.