Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/5691
Title: A buoyancy stabilized hot point drill for glacier studies
Authors: Aamot, H. W. C. (Haldor W. C.)
Keywords: Drilling
Drills
Drill
Glaciers
Glacier ice
Ice
Glaciology
Equipment
Boring
Boring machinery
Hot point drills
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Description: Technical Report
Abstract: Hot point drills are practical tools for penetrating glaciers for ice thickness and temperature measurements and other glaciological studies. Buoyancy stabilization ensures a vertical attitude of the drill and a plumb hole using a heavy hot point and a light upper section which floats in the surrounding melt water. The buoyant force is less than the weight of the drill in air but its rectifying moment about the fulcrum (the tip) is greater than the tilting moment of the drill weight. Two methods to prevent refreezing of the melt water are proposed to permit drilling in cold ice and to assure continued access to the hole.
URI: http://hdl.handle.net/11681/5691
Appears in Collections:CRREL Technical Report

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