Ice core drills usable for wet ice

概要

論文の詳細を見る
Ice core drills which stored cuttings above the core barrel were tested. Cuttings were pushed up by one short booster screw. For a constant drilling speed, the necessary power increased with the amount of cuttings, being less than 110% of initial value (power for cutting only) for a 1.2-m drilling and about 150% for a 2.6-m drilling. The drills could core wet ice as efficiently as cold ice. The method of storing cuttings is also adequate for a drill used in a liquid-filled hole.
国立極地研究所の論文