The Hans Tausen drill: Design, performance, further developments and som lessons learned

Sigfus Johann Johnsen; Dorthe Dahl-Jensen; Jørgen Peder Steffensen; Trevor James Popp; Bo S. Hansen; Simon Sheldon; P. Journé; A. Laurent; O. Alemany; H. Rufli; J. Schwander; N. Azuma; H. Motoyama; P. Talalay; T. Thorsteinsson; F. Wilhelms; V. Zagorodnov

doi:10.3189/172756407786857686

The Hans Tausen drill: Design, performance, further developments and som lessons learned

Sigfus Johann Johnsen, Dorthe Dahl-Jensen, Jørgen Peder Steffensen, Trevor James Popp, Bo S. Hansen, Simon Sheldon, P. Journé, A. Laurent, O. Alemany, H. Rufli, J. Schwander, N. Azuma, H. Motoyama, P. Talalay, T. Thorsteinsson, F. Wilhelms, V. Zagorodnov

Physics of Ice, Climate and Earth

31 Citations (Scopus)

Abstract

In the mid-1990s, excellent results from the GRIP and GISP2 deep drilling projects in Greenland opened up funding for continued ice-coring efforts in Antarctica (EPICA) and Greenland (NorthGRIP). The Glaciology Group of the Niels Bohr Institute, University of Copenhagen, was assigned the task of providing drilling capability for these projects, as it had done for the GRIP project. The group decided to further simplify existing deep drill designs for better reliability and ease of handling. The drill design decided upon was successfully tested on Hans Tausen Ice Cap, Peary Land, Greenland, in 1995. The 5.0 m long Hans Tausen (HT) drill was a prototype for the ~11 m long EPICA and NorthGRIP versions of the drill which were mechanically identical to the HT drill except for a much longer core barrel and chips chamber. These drills could deliver up to 4 m long ice cores after some design improvements had been introduced. The Berkner Island (Antarctica) drill is also an extended HT drill capable of drilling 2 m long cores. The success of the mechanical design of the HT drill is manifested by over 12 km of good-quality ice cores drilled by the HT drill and its derivatives since 1995.
Udgivelsesdato: december

Original language	English
Journal	Annals of Glaciology
Volume	47
Issue number	1
Pages (from-to)	89-98
Number of pages	9
ISSN	0260-3055
DOIs	https://doi.org/10.3189/172756407786857686
Publication status	Published - 2007

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Johnsen, S. J., Dahl-Jensen, D., Steffensen, J. P., Popp, T. J., Hansen, B. S., Sheldon, S., Journé, P., Laurent, A., Alemany, O., Rufli, H., Schwander, J., Azuma, N., Motoyama, H., Talalay, P., Thorsteinsson, T., Wilhelms, F., & Zagorodnov, V. (2007). The Hans Tausen drill: Design, performance, further developments and som lessons learned. Annals of Glaciology, 47(1), 89-98. https://doi.org/10.3189/172756407786857686

Johnsen, SJ, Dahl-Jensen, D , Steffensen, JP, Popp, TJ, Hansen, BS, Sheldon, S, Journé, P, Laurent, A, Alemany, O, Rufli, H, Schwander, J, Azuma, N, Motoyama, H, Talalay, P, Thorsteinsson, T, Wilhelms, F & Zagorodnov, V 2007, 'The Hans Tausen drill: Design, performance, further developments and som lessons learned', Annals of Glaciology, vol. 47, no. 1, pp. 89-98. https://doi.org/10.3189/172756407786857686

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title = "The Hans Tausen drill: Design, performance, further developments and som lessons learned",

abstract = "In the mid-1990s, excellent results from the GRIP and GISP2 deep drilling projects in Greenland opened up funding for continued ice-coring efforts in Antarctica (EPICA) and Greenland (NorthGRIP). The Glaciology Group of the Niels Bohr Institute, University of Copenhagen, was assigned the task of providing drilling capability for these projects, as it had done for the GRIP project. The group decided to further simplify existing deep drill designs for better reliability and ease of handling. The drill design decided upon was successfully tested on Hans Tausen Ice Cap, Peary Land, Greenland, in 1995. The 5.0 m long Hans Tausen (HT) drill was a prototype for the ~11 m long EPICA and NorthGRIP versions of the drill which were mechanically identical to the HT drill except for a much longer core barrel and chips chamber. These drills could deliver up to 4 m long ice cores after some design improvements had been introduced. The Berkner Island (Antarctica) drill is also an extended HT drill capable of drilling 2 m long cores. The success of the mechanical design of the HT drill is manifested by over 12 km of good-quality ice cores drilled by the HT drill and its derivatives since 1995. Udgivelsesdato: december",

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AU - Johnsen, Sigfus Johann

AU - Dahl-Jensen, Dorthe

AU - Steffensen, Jørgen Peder

AU - Popp, Trevor James

AU - Hansen, Bo S.

AU - Sheldon, Simon

AU - Journé, P.

AU - Laurent, A.

AU - Alemany, O.

AU - Rufli, H.

AU - Schwander, J.

AU - Azuma, N.

AU - Motoyama, H.

AU - Talalay, P.

AU - Thorsteinsson, T.

AU - Wilhelms, F.

AU - Zagorodnov, V.

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N2 - In the mid-1990s, excellent results from the GRIP and GISP2 deep drilling projects in Greenland opened up funding for continued ice-coring efforts in Antarctica (EPICA) and Greenland (NorthGRIP). The Glaciology Group of the Niels Bohr Institute, University of Copenhagen, was assigned the task of providing drilling capability for these projects, as it had done for the GRIP project. The group decided to further simplify existing deep drill designs for better reliability and ease of handling. The drill design decided upon was successfully tested on Hans Tausen Ice Cap, Peary Land, Greenland, in 1995. The 5.0 m long Hans Tausen (HT) drill was a prototype for the ~11 m long EPICA and NorthGRIP versions of the drill which were mechanically identical to the HT drill except for a much longer core barrel and chips chamber. These drills could deliver up to 4 m long ice cores after some design improvements had been introduced. The Berkner Island (Antarctica) drill is also an extended HT drill capable of drilling 2 m long cores. The success of the mechanical design of the HT drill is manifested by over 12 km of good-quality ice cores drilled by the HT drill and its derivatives since 1995. Udgivelsesdato: december

AB - In the mid-1990s, excellent results from the GRIP and GISP2 deep drilling projects in Greenland opened up funding for continued ice-coring efforts in Antarctica (EPICA) and Greenland (NorthGRIP). The Glaciology Group of the Niels Bohr Institute, University of Copenhagen, was assigned the task of providing drilling capability for these projects, as it had done for the GRIP project. The group decided to further simplify existing deep drill designs for better reliability and ease of handling. The drill design decided upon was successfully tested on Hans Tausen Ice Cap, Peary Land, Greenland, in 1995. The 5.0 m long Hans Tausen (HT) drill was a prototype for the ~11 m long EPICA and NorthGRIP versions of the drill which were mechanically identical to the HT drill except for a much longer core barrel and chips chamber. These drills could deliver up to 4 m long ice cores after some design improvements had been introduced. The Berkner Island (Antarctica) drill is also an extended HT drill capable of drilling 2 m long cores. The success of the mechanical design of the HT drill is manifested by over 12 km of good-quality ice cores drilled by the HT drill and its derivatives since 1995. Udgivelsesdato: december

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