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A new large-diameter ice-core drill: the Blue Ice Drill

  • Tanner W. Kuhl (a1), Jay A. Johnson (a1), Alexander J. Shturmakov (a1), Joshua J. Goetz (a1), Chris J. Gibson (a1) and Donald A. Lebar (a1)...

Abstract

The Blue Ice Drill (BID) is a large-diameter agile drill system designed by the Ice Drilling Design and Operations group of the University of Wisconsin–Madison to quickly core-clean 241 mm diameter ice samples from near-surface sites. It consists of a down-hole motor/gear reducer rotating a coring cutter and core barrel inside an outer barrel for efficient cuttings transport in solid ice. A variable-frequency drive and custom control box regulates electrical power to the drill. Torque reaction is accomplished on the surface via handles attached to a torsion stem. Core recovery is achieved with either core dogs in the sonde or with a separate core recovery tool. All down-hole tools are suspended on a collapsible tripod via ropes running on a capstan winch. The BID is operated by a minimum of two people and has been used successfully during two seasons of coring on a blue ice area of Taylor Glacier, Antarctica. An updated version of the drill system, BID-Deep, has been designed to recover cores to depths up to 200 m.

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References

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Johnsen, SJ and 16 others (2007) The Hans Tausen drill: design, performance, further developments and some lessons learned. Ann. Glaciol., 47, 8998 (doi: 10.3189/172756407786857686)
Proenza, LM, Kelley, JJ, Koci, B, Sonderup, J and Wumkes, M (1990) Shallow and deep ice coring devices developed by the Polar Ice Coring Office. In Proceedings of the International Conference on Development and Commercial Utilisations of Technologies in Polar Regions (POLARTECH ’90), 14–16 August 1990, Copenhagen, Denmark. (PICO CP-90-02) US Ice Drilling Program, Hanover, NH, 113
Rand, J and Mellor, M (1985) Ice-coring augers for shallow depth sampling. CRREL Rep. 85-21
Schwander, J and Rufli, H (1988) Electromechanical drilling in dry holes to medium depths. In Rado, C and Beaudoing, D eds. Proceedings of the 3rd International Workshop on Ice Drilling Technology, 10–14 October 1988, Grenoble, France. US Ice Drilling Program, Hanover, NH, 3237

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