The Japanese second deep ice coring project was carried out at Dome Fuji, Antarctica. Following the drilling of the pilot hole in 2001, deep ice core drilling led by the Japanese Antarctic Research Expedition (JARE) was conducted over four austral summer seasons, beginning with the 2003/04 season and reached a depth of 3035.22 m near the bedrock in January 2007. The new drill was designed and developed with the goals of (1) solving the problems encountered during the first JARE deep coring drill and (2) achieving more efficient drilling. In particular, the maximum core length that can be drilled at one time was increased from 2.30 m to 3.84 m and the chip storage efficiency was enhanced by a special pipe with many small holes. This paper gives an outline of the improved drilling system, the progress of drilling and various drilling data.

中文翻译：

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2001-07 年在南极洲 Dome Fuji 进行深度冰芯钻探，深度为 3035.22 m

日本第二次深冰取芯项目在南极洲的 Dome Fuji 进行。继 2001 年钻探导向孔之后，由日本南极研究探险队 (JARE) 领导的深冰芯钻探在 2003/04 季节开始的四个南方夏季进行，并在 2009 年的基岩附近达到了 3035.22 m 的深度。 2007 年 1 月。新钻机的设计和开发目标是 (1) 解决在第一次 JARE 深取心钻机中遇到的问题和 (2) 实现更高效的钻探。特别是一次可钻孔的最大芯长从2.30 m增加到3.84 m，并通过带有许多小孔的特殊管道提高了切屑存储效率。本文概述了改进的钻井系统、钻井进展和各种钻井数据。