|Author(s)||Niels S Gundestrup|
Ice Core Drilling. Proceedings of the Third International Workshop on Ice Drilling Technology (eds C. Rado and D. Beaudoing)
In deep drilling, the hole must be filled with a liquid in order to prevent hole closure from the surrounding ice. The maximum depth received in a dry hole is 906 m at Dome C using a thermal drill in ice with a temperature of -50° C (Ritz and others, 1982). In Greenland, a thermal auger reached 404 m in -30° C ice (Clausen and others, 1988). Mechanical drills have a more limited depth capability in a dry hole than a thermal drill due to the lack of clearance at the drill head. Nevertheless, it was possible to core 360 m at South Pole (-55° C) and 325 m at Renland in East Greenland (-18° C). In deeper drillings, the hole has to be filled with a liquid.
|Special Collections||International Workshop on Ice Drilling Technology Series, 3rd International Workshop on Ice Drilling Technology|
|Citation||Niels S Gundestrup ( 1988 ) Hole Liquids. Ice Core Drilling. Proceedings of the Third International Workshop on Ice Drilling Technology (eds C. Rado and D. Beaudoing) , 51-53 .|