Northeast Atlantic sea surface circulation during the past 30-10 C-14 kyr BP

Citation
S. Lassen et al., Northeast Atlantic sea surface circulation during the past 30-10 C-14 kyr BP, PALEOCEANOG, 14(5), 1999, pp. 616-625
Citations number
45
Categorie Soggetti
Earth Sciences
Journal title
PALEOCEANOGRAPHY
ISSN journal
08838305 → ACNP
Volume
14
Issue
5
Year of publication
1999
Pages
616 - 625
Database
ISI
SICI code
0883-8305(199910)14:5<616:NASSCD>2.0.ZU;2-H
Abstract
A study was made of three cores from the Faeroe-Shetland gateway, based on planktonic foraminifera, oxygen isotopes, accelerator mass spectrometry C-1 4 dates, magnetic susceptibility, and counts of ice rafted debris (IRD). Th e data, covering the period 30-10 ka, show that during the Last Glacial Max imum the Arctic Front: occupied a position close to the Faeroes, allowing a persisting inflow of Atlantic surface water into the Faeroe-Shetland Chann el. The oceanographic environment during deposition of two IRD layers is in fluenced by Atlantic surface water masses during the lower IRD layer, with transport of icebergs from N-NW. Polar surface water conditions prevailed o nly during deposition of the upper IRD layer. There is no indication of sur face meltwater influence in the region during the deglaciation, but there i s a persistent influence of Atlantic surface water masses in the region. Th us we conclude that during almost the entire period (30-10 ka) the Faeroe-S hetland Channel was a gateway for transport of Atlantic surface water towar d the Norwegian Sea.