Authors: Green, J.; Koci, B.; Kyne, J.

Source: Annals of Glaciology, Volume 47, Number 1, December 2007 , pp. 105-108(4)

Publisher: International Glaciological Society

Abstract:

A new man-portable drill designed to perform in ice with entrained sand and rock has been built. Designated the 'Koci drill', it was first used on rock-covered glaciers in the McMurdo Dry Valleys, Antarctica, during the 2006/07 field season. This drill is designed to be disassembled into component parts no heavier than 30 kg (not including the generator). For stability, the drill platform weight can be augmented with available rock. The field performance of the drill was generally good and both ice and rock were successfully penetrated and acceptable-quality ice cores up to 1 m long were collected during the 2007/08 season. The maximum depth achieved was 10.25 m. Given a concentrated effort at one or two sites per season, a depth of 40 m is achievable. Problems encountered in the field will be addressed in the next-generation design.

Document Type: Research article

DOI: http://dx.doi.org/10.3189/172756407786857677

Publication date: 2007-12-01

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• The Annals of Glaciology is a peer-reviewed, thematic journal published 2 to 4 times a year by the International Glaciological Society (IGS). Publication frequency is determined and volume/issue numbers assigned by the IGS Council on a year-to-year basis and with a lead time of 3 to 4 years. The Annals of Glaciology is included in the ISI Science Citation Index from volume 50, number 50 onwards.

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