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A new intermediate-depth ice-core drilling system

  • Simon G. Sheldon (a1), Trevor J. Popp (a1), Steffen B. Hansen (a1), Thomas M. Hedegaard (a1) and Carsten Mortensen (a1)...

Abstract

Several recent projects associated with the IPICS (International Partnerships in Ice Core Sciences) 2k array have demanded the recovery of ice core to depths in excess of several hundred metres (e.g. Flade Isblink, Greenland (2006), Aurora Basin, Antarctica (2008/09), NEEM, Greenland (2011), Aurora Basin North (2013/14) and Renland ice cap, Greenland (2015)). These projects require that the overall system weight is low, that the ability to set up and operate are within the limitations of a small-camp environment and that the overall logistical and transportation costs are kept to a minimum. Using these criteria, a new drilling system capable of drilling >400m depth was seen as a useful future development. Here we report on a new intermediate-depth drilling system designed to recover high-quality 98 mm diameter ice cores from close to surface down to depths of 1000 m by two or more operators in a small deep-field camp environment. The total weight of the system on the snow surface is ∼490 kg, of which the intermediate-depth winch is the single heaviest component at 305 kg with 1000 m of cable.

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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)
Jouzel, J (2013) A brief history of ice core science over the last 50 yr. Climate Past, 9(6), 25252547 (doi: 10.5194/cp-9-2525-2013)
Mulvaney, R, Triest, J and Alemany, O (2014) The James Ross Island and the Fletcher Promontory ice-core drilling projects. Ann. Glaciol., 55(68) (doi: 10.3189/2014AoG68A044) (see paper in this issue)
Sheldon, SG, Popp, TJ, Hansen, SB and Steffensen, JP (2014) Promising new borehole liquids for ice-core drilling on the East Antarctic high plateau. Ann. Glaciol., 55(68) (doi: 10.3189/2014AoG68A043) (see paper in this issue)

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A new intermediate-depth ice-core drilling system

  • Simon G. Sheldon (a1), Trevor J. Popp (a1), Steffen B. Hansen (a1), Thomas M. Hedegaard (a1) and Carsten Mortensen (a1)...

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