CORIBAR Ice dynamics and meltwater deposits: coring in the Kveithola Trough, NW Barents Sea - Cruise MSM30 - July 16 - August 15, 2013 - Tromsø (Norway) - Tromsø (Norway) ...

• Main Authors: Hanebuth, Till JJ, Lantzsch, Hendrik, Bergenthal, Markus, Caburlotto, Andrea, Dippold, Sebastian, Düßmann, Ralf, Freudenthal, Tim, Hörner, Tanja, Kaszemeik, Kai, Klar, Steffen, Llopart, Jaume, Lucchi, Renata G, Nicolaisen, Line S, Noorlander, Kees, Osti, Giacomo, Özmaral, Asli, Rebesco, Michele, Rosiak, Uwe, Sabbatini, Anna, Schmidt, Werner, Stachowski, Adrian, Urgeles, Roger
• Format: Report
• Language: English
• Published: DFG-Senatskommission für Ozeanographie 2014
• Subjects: Earth Science; Earth sciences and geology; Barents Sea; Norway; Tromsø; Sea ice
• Online Access: https://dx.doi.org/10.2312/cr_msm30; https://www.tib.eu/suchen/id/awi:24442fa25b14f0cd07b6884e6fd704c1687a88ff

The CORIBAR cruise aimed at drilling glacigenic sediments with the MARUM-owned seafloor drill rig MeBo in the Kveithola Trough, a palaeo-ice stream depositional system in the western Barents Sea. The main scientific objective was to reconstruct high- and deglacial icestream and sea-ice dynamics as a result of climatic variability. MeBo was used for the first time in polar regions to drill glacigenic deposits and to gain experience in drilling in high-latitude environments. Several MeBo deployments had to be stopped due to technical incidents and MeBo was finally deployed 9 times at 5 sites with a total cored length of 113 m (53 % recovery). Inside the trough, MeBo drilled with great recovery through the uppermost cohesive marine sediments. The underlying glacigenic deposits were highly compacted resulting in poor core recovery. Compacted sediments were also encountered inside a scar channel on the trough mouth fan. Marine plumite deposits underlying a sticky debrite, were soft and permeable which led to full ... : MARIA S. MERIAN-Berichte ...