000			02689nab a2200325 4500
003			OSt
005			20220816191059.0
007			cr aa aaaaa
008			220816b |||||||| |||| 00| 0 eng d
100			_aLochte, Annalena Antonia _951781
245			_aHolocene water mass changes in the Labrador Current/
260			_bSage, _c2019.
300			_aVol 29, issue 4, 2019 : (676-690 p.).
520			_aThe Labrador Current is part of the anticlockwise subpolar gyre and plays a major role in the formation of North Atlantic Deep Water. It is influenced by the West Greenland and Baffin currents supplying warmer Atlantic and cold polar waters, respectively. During the early Holocene, at the final stage of the last deglaciation, meltwater and iceberg discharge caused highly variable conditions in the Labrador Current. In order to assess its sensitivity to such freshening, this study provides a well-resolved Holocene paleoclimatic record from the Labrador Shelf. Based on benthic foraminiferal faunal and alkenone biomarker analyses, we differentiated four distinct climatic periods in the western Labrador Sea. From 8.9 to 8.6 ka BP, the Labrador Shelf was dominated by polar water outflow from Baffin Bay and covered by perennial sea ice. Between 8.6 and 7.4 ka BP, a strong subsurface inflow of warmer Atlantic water masses is ascribed to an intensification and redirection of the West Greenland Current. At 7.4 ka BP, the decreased influence of Atlantic water masses on the Labrador Shelf marks the establishment of winter convection leading to the formation of Labrador Sea Water in the central basin. Concurrently, an intensified polar water outflow through the Canadian Gateways strengthened the inner Labrador Current, and higher primary productivity suggests longer spring blooms because of a shorter sea-ice season during the Holocene Thermal Maximum. In the late Holocene after 3 ka BP, periodic fluctuations of primary productivity may tentatively be correlated with stronger and weaker northwesterly winds.
650			_aalkenones, _951782
650			_abenthic foraminifera, _951558
650			_a Holocene, _950806
650			_a Labrador Current, _951783
650			_aLabrador Sea, _951784
650			_aprimary productivity, _951785
650			_aWest Greenland Current _951786
700			_aRepschläger, Janne _951787
700			_aSeidenkrantz, Marit-Solveig _951788
700			_aKienast, Markus _951789
700			_aBlanz, Thomas _951790
700			_aSchneider, Ralph R _951791
773	0		_012756 _916504 _dLondon: Sage Publication Ltd, 2019. _tHolocene/ _x09596836
856			_uhttps://doi.org/10.1177/0959683618824752
942			_2ddc _cART
999			_c12818 _d12818