FN Archimer Export Format
PT J
TI Holocene palaeoceanography of the Northeast Greenland shelf
BT 
AF Pados-Dibattista, Teodora
   Pearce, Christof
   Detlef, Henrieka
   Brendtsen, Jørgen
   Seidenkrantz, Marit-Solveig
AS 1:1;2:1;3:1;4:2;5:1;
FF 1:;2:;3:;4:;5:;
C1 Department of Geoscience, Aarhus University, Aarhus, 8000, Denmark
   Norwegian Institute for Water Research (NIVA), Copenhagen, 2300, Denmark
C2 UNIV AARHUS, DENMARK
   NIVA, DENMARK
IN DOAJ
TC 0
UR https://archimer.ifremer.fr/doc/00697/80945/84912.pdf
   https://archimer.ifremer.fr/doc/00697/80945/91633.pdf
LA English
DT Article
CR IMAGES 1-MD101
   IMAGES V LEG 1-MD114
   IMAGES V LEG 4-MD114
   IMAGES V LEG 5
BO Marion Dufresne
AB The Northeast Greenland shelf is highly sensitive to climate and ocean variability because it is swept by the East Greenland Current, which, through the western Fram Strait, forms the main pathway of export of sea ice and cold water masses from the Arctic Ocean into the North Atlantic Ocean. We carried out benthic foraminiferal assemblage, stable isotope- and sedimentological analyses of a marine sediment core retrieved from the Northeast Greenland shelf (core DA17-NG-ST7-73), which provided a multiproxy reconstruction of Holocene paleoceanographic conditions. The results reveal significant variations in the water masses and thus, in the strength of the East Greenland Current over the last ca. 9.4 ka BP. Between 9.4 and 8.2 ka BP the water column off Northeast Greenland was highly stratified, with cold, sea ice-loaded surface waters and strong influx of warm Atlantic Water in the subsurface. At ~8.4 ka BP a short-lived peak in terrestrial elements may be linked to influx of ice-berg transported sediments and thus, to the so-called 8.2 ka event. Holocene Thermal Maximum like conditions prevailed from 8.2 to 6.2 ka BP, with a strong influence of the Return Atlantic Current and a weakened transport of Polar Water in the upper East Greenland Current. After 6.2 ka BP we recorded a return to a more stratified water column with sea-ice loaded surface waters and still Atlantic-sourced subsurface waters. After 4.2 ka BP increased Polar Water at the surface of the East Greenland Current and reduction of the Return Atlantic Water at subsurface levels led to freshening and reduced stratification of the water column and (near) perennial sea-ice cover. The Neoglaciation started at 3.2 ka BP at our location, characterized by a strengthened East Greenland Current. Cold subsurface water conditions with possible sea-ice cover and minimum surface water productivity persisted here throughout the last ~3 kyr. 
PY 2022
SO Climate of the Past
SN 1814-9332
PU Copernicus GmbH
VL 18
IS 1
BP 103
EP 127
DI 10.5194/cp-2021-59
ID 80945
ER

EF