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https://doi.org/10.5194/egusphere-2024-3081
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/egusphere-2024-3081
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Preprints
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.

How to cite. Westhoff, J., Boeckmann, G. V., Rathmann, N. M., and Hansen, S. B.: Brief Communication: The Danish Replicate Drilling System – Results from the First Field Test, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2024-3081, 2024.
Received: 02 Oct 2024 – Discussion started: 10 Dec 2024
Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this paper. While Copernicus Publications makes every effort to include appropriate place names, the final responsibility lies with the authors. Views expressed in the text are those of the authors and do not necessarily reflect the views of the publisher.
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Julien Westhoff, Grant Vernon Boeckmann, Nicholas Mossor Rathmann, and Steffen Bo Hansen

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

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Short summary
We report on the successful test of a new replicate drilling system for ice cores. This system allows us to deviate the ice core drill from the parent, the original, borehole, and drill into the side of the wall. Thus, we can produce a second ice core from any desired depth, increasing the amount of sample available for scientific purposes. In the manuscript, we present the results from the first field tests and the challenges we encountered.
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