The EPICA Dronning Maud Land deep drilling operation
We report on the EPICA Dronning Maud Land (East Antarctica) deep drilling operation. Starting with the scientific questions that led to the outline of the EPICA project, we introduce the setting of sister drillings at NorthGRIP and EPICA Dome C within the European ice-coring community. The progress...
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International Glaciological Society
2014
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ftdatacite:10.7892/boris.68460 2023-05-15T13:54:54+02:00 The EPICA Dronning Maud Land deep drilling operation HANSEN, Steffen Bo GROBE, Hannes LAMBRECHT, Anja KARLIN, Torbjörn LAWER, Gunther KOHLBERG, Eberhard MILLER, Heinrich TRENKE, Marcus GERASIMOFF, Michael D. FRITZSCHE, Diedrich HÖRNBY, Kerstin SCHÄRMELI, Ivan HILMARSSON, Sverrir Æ. SHELDON, Simon G. TAKATA, Morimasa WILHELMS-DICK, Dorothee LAMBRECHT, Astrid TWARLOH, Birthe KARSTEN, Lorenz JAESCHKE, Andrea KLEFFEL, Guido FRENZEL, Andreas HOFFMANN, Georg VALERO-DELGADO, Fernando DRÜCKER, Cord JAKOBSDÓTTIR, Steinunn S. KARSTEN, Achim Schmitt, Jochen JUCKSCHAT, Paul Kaufmann, Patrik R. WILHELMS, Frank 2014 application/pdf https://dx.doi.org/10.7892/boris.68460 http://boris.unibe.ch/68460/ en eng International Glaciological Society info:eu-repo/semantics/openAccess 530 Physics CreativeWork article 2014 ftdatacite https://doi.org/10.7892/boris.68460 2021-11-05T12:55:41Z We report on the EPICA Dronning Maud Land (East Antarctica) deep drilling operation. Starting with the scientific questions that led to the outline of the EPICA project, we introduce the setting of sister drillings at NorthGRIP and EPICA Dome C within the European ice-coring community. The progress of the drilling operation is described within the context of three parallel, deep-drilling operations, the problems that occurred and the solutions we developed. Modified procedures are described, such as the monitoring of penetration rate via cable weight rather than motor torque, and modifications to the system (e.g. closing the openings at the lower end of the outer barrel to reduce the risk of immersing the drill in highly concentrated chip suspension). Parameters of the drilling (e.g. core-break force, cutter pitch, chips balance, liquid level, core production rate and piece number) are discussed. We also review the operational mode, particularly in the context of achieved core length and piece length, which have to be optimized for drilling efficiency and core quality respectively. We conclude with recommendations addressing the design of the chip-collection openings and strictly limiting the cable-load drop with respect to the load at the start of the run. Article in Journal/Newspaper Antarc* Antarctica Dronning Maud Land East Antarctica EPICA DataCite Metadata Store (German National Library of Science and Technology) East Antarctica Dronning Maud Land |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics HANSEN, Steffen Bo GROBE, Hannes LAMBRECHT, Anja KARLIN, Torbjörn LAWER, Gunther KOHLBERG, Eberhard MILLER, Heinrich TRENKE, Marcus GERASIMOFF, Michael D. FRITZSCHE, Diedrich HÖRNBY, Kerstin SCHÄRMELI, Ivan HILMARSSON, Sverrir Æ. SHELDON, Simon G. TAKATA, Morimasa WILHELMS-DICK, Dorothee LAMBRECHT, Astrid TWARLOH, Birthe KARSTEN, Lorenz JAESCHKE, Andrea KLEFFEL, Guido FRENZEL, Andreas HOFFMANN, Georg VALERO-DELGADO, Fernando DRÜCKER, Cord JAKOBSDÓTTIR, Steinunn S. KARSTEN, Achim Schmitt, Jochen JUCKSCHAT, Paul Kaufmann, Patrik R. WILHELMS, Frank The EPICA Dronning Maud Land deep drilling operation |
topic_facet |
530 Physics |
description |
We report on the EPICA Dronning Maud Land (East Antarctica) deep drilling operation. Starting with the scientific questions that led to the outline of the EPICA project, we introduce the setting of sister drillings at NorthGRIP and EPICA Dome C within the European ice-coring community. The progress of the drilling operation is described within the context of three parallel, deep-drilling operations, the problems that occurred and the solutions we developed. Modified procedures are described, such as the monitoring of penetration rate via cable weight rather than motor torque, and modifications to the system (e.g. closing the openings at the lower end of the outer barrel to reduce the risk of immersing the drill in highly concentrated chip suspension). Parameters of the drilling (e.g. core-break force, cutter pitch, chips balance, liquid level, core production rate and piece number) are discussed. We also review the operational mode, particularly in the context of achieved core length and piece length, which have to be optimized for drilling efficiency and core quality respectively. We conclude with recommendations addressing the design of the chip-collection openings and strictly limiting the cable-load drop with respect to the load at the start of the run. |
format |
Article in Journal/Newspaper |
author |
HANSEN, Steffen Bo GROBE, Hannes LAMBRECHT, Anja KARLIN, Torbjörn LAWER, Gunther KOHLBERG, Eberhard MILLER, Heinrich TRENKE, Marcus GERASIMOFF, Michael D. FRITZSCHE, Diedrich HÖRNBY, Kerstin SCHÄRMELI, Ivan HILMARSSON, Sverrir Æ. SHELDON, Simon G. TAKATA, Morimasa WILHELMS-DICK, Dorothee LAMBRECHT, Astrid TWARLOH, Birthe KARSTEN, Lorenz JAESCHKE, Andrea KLEFFEL, Guido FRENZEL, Andreas HOFFMANN, Georg VALERO-DELGADO, Fernando DRÜCKER, Cord JAKOBSDÓTTIR, Steinunn S. KARSTEN, Achim Schmitt, Jochen JUCKSCHAT, Paul Kaufmann, Patrik R. WILHELMS, Frank |
author_facet |
HANSEN, Steffen Bo GROBE, Hannes LAMBRECHT, Anja KARLIN, Torbjörn LAWER, Gunther KOHLBERG, Eberhard MILLER, Heinrich TRENKE, Marcus GERASIMOFF, Michael D. FRITZSCHE, Diedrich HÖRNBY, Kerstin SCHÄRMELI, Ivan HILMARSSON, Sverrir Æ. SHELDON, Simon G. TAKATA, Morimasa WILHELMS-DICK, Dorothee LAMBRECHT, Astrid TWARLOH, Birthe KARSTEN, Lorenz JAESCHKE, Andrea KLEFFEL, Guido FRENZEL, Andreas HOFFMANN, Georg VALERO-DELGADO, Fernando DRÜCKER, Cord JAKOBSDÓTTIR, Steinunn S. KARSTEN, Achim Schmitt, Jochen JUCKSCHAT, Paul Kaufmann, Patrik R. WILHELMS, Frank |
author_sort |
HANSEN, Steffen Bo |
title |
The EPICA Dronning Maud Land deep drilling operation |
title_short |
The EPICA Dronning Maud Land deep drilling operation |
title_full |
The EPICA Dronning Maud Land deep drilling operation |
title_fullStr |
The EPICA Dronning Maud Land deep drilling operation |
title_full_unstemmed |
The EPICA Dronning Maud Land deep drilling operation |
title_sort |
epica dronning maud land deep drilling operation |
publisher |
International Glaciological Society |
publishDate |
2014 |
url |
https://dx.doi.org/10.7892/boris.68460 http://boris.unibe.ch/68460/ |
geographic |
East Antarctica Dronning Maud Land |
geographic_facet |
East Antarctica Dronning Maud Land |
genre |
Antarc* Antarctica Dronning Maud Land East Antarctica EPICA |
genre_facet |
Antarc* Antarctica Dronning Maud Land East Antarctica EPICA |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.7892/boris.68460 |
_version_ |
1766261106241699840 |