EPICA Dronning Maud Land EDML ice core drilling protocol, supplement to: Wilhelms, Frank; Miller, Heinz; 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 (2014): The EPICA Dronning Maud Land deep drilling operation. Annals of Glaciology, 55(68), 355-366

DOI

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. DEPTH, ice/snow [m] = Drilled depth, measured cable length. For offset to core depth refer to reference.

Identifier
DOI https://doi.org/10.1594/PANGAEA.841035
Related Identifier https://doi.org/10.3189/2014AoG68A189
Related Identifier https://doi.org/10.1016/j.coldregions.2013.09.009
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.841035
Provenance
Creator Wilhelms, Frank; Miller, Heinz; 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
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2014
Funding Reference Fifth Framework Programme; Fourth Framework Programme
Rights Creative Commons Attribution-NonCommercial 3.0 Unported
OpenAccess true
Representation
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Size 14880 data points
Discipline Earth System Research
Spatial Coverage (0.068 LON, -75.002 LAT)
Temporal Coverage Begin 2001-01-10T00:00:00Z
Temporal Coverage End 2006-01-17T00:00:00Z