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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2014
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| Accesso online: | https://doi.org/10.1594/PANGAEA.841035 |
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| _version_ | 1867170052751491072 |
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| author | Wilhelms, Frank Miller, Heinrich Gerasimoff, Michael D Drücker, Cord Frenzel, Andreas Fritzsche, Diedrich Grobe, Hannes Hansen, Steffen Bo Hilmarsson, Sverrir Æ Hoffmann, Georg Hörnby, Kerstin Jaeschke, Andrea Jakobsdottir, Steinunn S Juckschat, Paul Karsten, Achim Karsten, Lorenz Kaufmann, Patrik R Karlin, Torbjörn Kohlberg, Eberhard Kleffel, Guido Lambrecht, Anja Lambrecht, Astrid Lawer, Gunther Schärmeli, Ivan Schmitt, Jochen Sheldon, Simon G Takata, Morimasa Trenke, Marcus Twarloh, Birthe Valero Delgado, Fernando Wilhelms-Dick, Dorothee |
| author_facet | Wilhelms, Frank Miller, Heinrich Gerasimoff, Michael D Drücker, Cord Frenzel, Andreas Fritzsche, Diedrich Grobe, Hannes Hansen, Steffen Bo Hilmarsson, Sverrir Æ Hoffmann, Georg Hörnby, Kerstin Jaeschke, Andrea Jakobsdottir, Steinunn S Juckschat, Paul Karsten, Achim Karsten, Lorenz Kaufmann, Patrik R Karlin, Torbjörn Kohlberg, Eberhard Kleffel, Guido Lambrecht, Anja Lambrecht, Astrid Lawer, Gunther Schärmeli, Ivan Schmitt, Jochen Sheldon, Simon G Takata, Morimasa Trenke, Marcus Twarloh, Birthe Valero Delgado, Fernando Wilhelms-Dick, Dorothee |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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 | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_841035 |
| institution | PANGAEA |
| language | en |
| publishDate | 2014 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | EPICA Dronning Maud Land EDML ice core drilling protocol Wilhelms, Frank Miller, Heinrich Gerasimoff, Michael D Drücker, Cord Frenzel, Andreas Fritzsche, Diedrich Grobe, Hannes Hansen, Steffen Bo Hilmarsson, Sverrir Æ Hoffmann, Georg Hörnby, Kerstin Jaeschke, Andrea Jakobsdottir, Steinunn S Juckschat, Paul Karsten, Achim Karsten, Lorenz Kaufmann, Patrik R Karlin, Torbjörn Kohlberg, Eberhard Kleffel, Guido Lambrecht, Anja Lambrecht, Astrid Lawer, Gunther Schärmeli, Ivan Schmitt, Jochen Sheldon, Simon G Takata, Morimasa Trenke, Marcus Twarloh, Birthe Valero Delgado, Fernando Wilhelms-Dick, Dorothee Break strength; Comment; Core length; Density, mass density; DEPTH, ice/snow; EDML; EDRILL; EPICA; EPICA-Campaigns; EPICA drill; EPICA Dronning Maud Land, DML28C01_00; European Project for Ice Coring in Antarctica; Kohnen Station; Level; Mass; Number; Pitch, lower limit; Pitch, upper limit; Run; Run Date/Time; Temperature, technical; Volume 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. |
| title | EPICA Dronning Maud Land EDML ice core drilling protocol |
| topic | Break strength; Comment; Core length; Density, mass density; DEPTH, ice/snow; EDML; EDRILL; EPICA; EPICA-Campaigns; EPICA drill; EPICA Dronning Maud Land, DML28C01_00; European Project for Ice Coring in Antarctica; Kohnen Station; Level; Mass; Number; Pitch, lower limit; Pitch, upper limit; Run; Run Date/Time; Temperature, technical; Volume |
| url | https://doi.org/10.1594/PANGAEA.841035 |