FN Archimer Export Format
PT J
TI Palaeoceanographic reconstruction of surface-ocean changes in the southern Norwegian Sea for the last ~130,000 years based on diatoms and with comparison to foraminiferal records
BT 
AF HOFF, Ulrike
   RASMUSSEN, Tine L.
   MEYER, Hanno
   KOC, Nalan
   HANSEN, Jesper
AS 1:1;2:1;3:2;4:3;5:4;
FF 1:;2:;3:;4:;5:;
C1 UiT Arctic Univ Norway, Dept Geosci, CAGE Ctr Arctic Gas Hydrate Environm & Climate, NO-9037 Tromso, Norway.
   Alfred Wegener Inst Polar & Marine Res, Res Potsdam, Telegrafenberg A45-2, D-14473 Potsdam, Germany.
   Norwegian Polar Res Inst, Fram Ctr, Hjalmar Johansens Gt 14, NO-9296 Tromso, Norway.
   Akvaplan Niva AS, Fram Ctr, Hjalmar Johansens Gt 14, NO-9296 Tromso, Norway.
C2 UIT ARCTIC UNIV NORWAY, NORWAY
   INST A WEGENER, GERMANY
   NORWEGIAN POLAR RES INST, NORWAY
   AKVAPLAN NIVA AS, NORWAY
IF 2.833
TC 2
UR https://archimer.ifremer.fr/doc/00504/61586/65893.pdf
LA English
DT Article
CR IMAGES 1-MD101
BO Marion Dufresne
DE ;Atlantic water;Marine isotope stages (MIS);Eemian;Holocene;Faroe Islands;Nordic seas
AB Fossil marine diatom assemblages in a sediment core from the central northern Faroe slope in the Norwegian Sea were used to reconstruct palaeoceanographic changes in the surface water mixed layer from the last similar to 130,000 years (Marine Isotope Stage (MIS) 6/5 transition to MIS 1 (including the Eemian and Holocene interglacials) and to compare the results with previously published results on planktic foraminifera representing the subsurface conditions of the thermocline. Diatom floras from MIS 5 of the Nordic seas have rarely been studied in detail before and never the entire period from pre-Eemian to present. The composition of diatom species together with maxima in absolute abundance of diatoms, indicate two periods of warmer sea surface temperatures correlating with the Eemian and Holocene interglacials, respectively. The Eemian differs from the Holocene in that the Iceland-Faroe Front never developed, suggesting the cold East Icelandic Current (originating from the East Greenland Current) running north of Iceland was reduced or more mixed with Atlantic water than during the Holocene and that the surface temperature and salinity gradients were weaker. The northern Faroe slope was in the early Weichselian of MIS 5d-5a mainly influenced by weaker inflow of Atlantic water and stronger influence of the East Icelandic Current and by seasonal sea-ice cover. During the later part of the Weichselian (MIS 4-MIS 2) cold conditions prevailed with extensive sea-ice cover except during the warmer interstadials. The diatom floras were more sensitive to climate changes than the planktic foraminifera and indicate longer periods with warm surface conditions, and increased influence of the warm Atlantic surface water from the Faroe Current in MIS 5, suggesting a shallower and much steeper thermocline during the transitional periods compared to today. The diatoms are good indicators for Atlantic water inflow and possible convection in the Nordic seas, not merely reflecting orbital variations in insolation as previously suggested. 
PY 2019
PD JUL
SO Palaeogeography Palaeoclimatology Palaeoecology
SN 0031-0182
PU Elsevier Science Bv
VL 524
UT 000469154700012
BP 150
EP 165
DI 10.1016/j.palaeo.2019.03.006
ID 61586
ER

EF