Sediments in arctic sea ice - entrainment, characterization and quantification ...

• Main Authors: Thiede, Jörn, Lindemann, Frank
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1998
• Subjects: Ice station; ARK-XI/1; Transdrift-III; Polarstern; Kapitan Dranitsyn; Quaternary Environment of the Eurasian North QUEEN; Arctic Ocean; Arktis*; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.693818; https://doi.pangaea.de/10.1594/PANGAEA.693818

Sediments in Arctic sea ice are important for erosion and redistribution and consequently a factor for the sediment budget of the Arctic Ocean. The processes leading to the incorporation of sediments into the ice are not understood in detail yet. In the present study, experiments on the incorporation of sediments were therefore conducted in ice tanks of The Hamburg Ship Model Basin (HSVA) in winter 1996/1997, These experiments showed that on average 75 % of the artificial sea-ice sediments were located in the brine-channel system. The sediments were scavenged from the water column by frazil ice. Sediments functioning as a nucleus for the formation of frazil ice were less important for the incorporation. Filtration in grease ice during relatively calm hydrodynamic conditions was probably an effective process to enrich sediments in the ice. Wave fields did not play an important role for the incorporation of sediments into the artificial sea ice.During the expedition TRANSDRIFT III (TDIII, October 1995), ... : Supplement to: Lindemann, Frank (1998): Sedimente im arktischen Meereis - Eintrag, Charakterisierung und Quantifizierung (Sediments in arctic sea ice - entrainment, characterization and quantification). Berichte zur Polarforschung = Reports on Polar Research, 283, 124 pp ...