Preprints
https://doi.org/10.5194/egusphere-2024-3081
https://doi.org/10.5194/egusphere-2024-3081
10 Dec 2024
 | 10 Dec 2024

Brief Communication: The Danish Replicate Drilling System – Results from the First Field Test

Julien Westhoff, Grant Vernon Boeckmann, Nicholas Mossor Rathmann, and Steffen Bo Hansen

Abstract. We report on the successful test of a new replicate drilling system for ice cores. The test was done in drill fluid, at 140 m depth of the EastGRIP borehole in central Greenland. By determining the borehole orientation, broaching into the side of the borehole wall, we can guide the milling tool into the downhill side of the borehole. Thus, we produce a ledge on which we rest the drill with all its weight. Gravity would now guide the ice core drill into the downhill side of the hole, gradually producing full ice cores.

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We report on the successful test of a new replicate drilling system for ice cores. This system...
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