FN Archimer Export Format
PT J
TI Northward advection of Atlantic water in the eastern Nordic Seas over the last 3000 yr
BT 
AF DYLMER, C. V.
   GIRAUDEAU, J.
   EYNAUD, Frederique
   HUSUM, K.
   DE VERNAL, A.
AS 1:1;2:1;3:1;4:2;5:3;
FF 1:;2:;3:;4:;5:;
C1 Univ Bordeaux, CNRS, EPOC UMR5805, Talence, France.
   Univ Tromsoe, Dept Geol, Tromso, Norway.
   Univ Quebec, GEOTOP, Montreal, PQ H3C 3P8, Canada.
C2 UNIV BORDEAUX, FRANCE
   UNIV TROMSO, NORWAY
   UNIV QUEBEC (UQAM-GEOTOP), CANADA
IN DOAJ
IF 3.482
TC 28
UR https://archimer.ifremer.fr/doc/00181/29239/27636.pdf
   https://archimer.ifremer.fr/doc/00181/29239/71300.pdf
LA English
DT Article
CR IMAGES 1-MD101
BO Marion Dufresne
AB Three marine sediment cores distributed along the Norwegian (MD95-2011), Barents Sea (JM09-KA11-GC), and Svalbard (HH11-134-BC) continental margins have been investigated in order to reconstruct changes in the poleward flow of Atlantic waters (AW) and in the nature of upper surface water masses within the eastern Nordic Seas over the last 3000 yr. These reconstructions are based on a limited set of coccolith proxies: the abundance ratio between Emiliania huxleyi and Coccolithus pelagicus, an index of Atlantic vs. Polar/Arctic surface water masses; and Gephyrocapsa muellerae, a drifted coccolith species from the temperate North Atlantic, whose abundance changes are related to variations in the strength of the North Atlantic Current. The entire investigated area, from 66 to 77 degrees N, was affected by an overall increase in AWflow from 3000 cal yr BP (before present) to the present. The long-term modulation of westerlies' strength and location, which are essentially driven by the dominant mode of the North Atlantic Oscillation (NAO), is thought to explain the observed dynamics of poleward AW flow. The same mechanism also reconciles the recorded opposite zonal shifts in the location of the Arctic front between the area off western Norway and the western Barents Sea-eastern Fram Strait region. The Little Ice Age (LIA) was governed by deteriorating conditions, with Arctic/Polar waters dominating in the surface off western Svalbard and western Barents Sea, possibly associated with both severe sea ice conditions and a strongly reduced AW strength. A sudden short pulse of resumed high WSC (West Spitsbergen Current) flow interrupted this cold spell in eastern Fram Strait from 330 to 410 cal yr BP. Our dataset not only confirms the high amplitude warming of surface waters at the turn of the 19th century off western Svalbard, it also shows that such a warming was primarily induced by an excess flow of AW which stands as unprecedented over the last 3000 yr.
PY 2013
SO Climate Of The Past
SN 1814-9324
PU Copernicus Gesellschaft Mbh
VL 9
IS 4
UT 000323412600010
BP 1505
EP 1518
DI 10.5194/cp-9-1505-2013
ID 29239
ER

EF