Improvements to the JARE deep ice core drill

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,...

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Bibliographic Details
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
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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
Description
Summary: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.