FN Archimer Export Format
PT J
TI Palaeoceanographic and hydrodynamic variability for the last 47 kyr in the southern Gulf of Cádiz (Atlantic Moroccan margin): sedimentary and climatic implications
BT 
AF Vandorpe, Thomas
   Delivet, Stanislas
   Blamart, Dominique
   Wienberg, Claudia
   Bassinot, Frank
   Mienis, Furu
   Stuut, Jan‐Berend W.
   van Rooij, David
AS 1:1,2;2:2;3:3;4:4;5:3;6:5;7:5;8:2;
FF 1:;2:;3:;4:;5:;6:;7:;8:;
C1 Flanders Marine Institute Ostend , Belgium
   Department of Geology Ghent University, Renard Centre of Marine Geology Ghent, Belgium
   Laboratoire des Sciences du Climat et de l’Environnement, Unité Mixte CEA/CNRS/UVSQ Gif‐sur‐Yvette , France
   MARUM ‐ Center for Marine Environmental Sciences, University of Bremen Bremen, Germany
   NIOZ ‐ Royal Netherlands Institute for Sea Research AB Den Burg , The Netherlands
C2 FLANDERS MARINE INSTITUTE (VLIZ), BELGIUM
   UNIV GHENT, BELGIUM
   LSCE, FRANCE
   UNIV BREMEN MARUM, GERMANY
   NIOZ, NETHERLANDS
IN DOAJ
IF 2.4
TC 0
UR https://archimer.ifremer.fr/doc/00801/91346/97175.pdf
   https://archimer.ifremer.fr/doc/00801/91346/97176.tif
   https://archimer.ifremer.fr/doc/00801/91346/97177.docx
LA English
DT Article
CR MD 169 / MICROSYSTEMS
BO Marion Dufresne
DE ;aeolian dust;Antarctic Intermediate Water;Azores Front;bottom currents;cold-water corals;Pen Duick drift
AB X-ray fluorescence, grain-size and oxygen and carbon stable isotope measurements of a 33 m long piston core, recovered from the Pen Duick drift located at the foot of the prominent Pen Duick Escarpment (Atlantic Moroccan margin), are combined to decipher past oceanographic conditions. The data indicate that, similar to the northern Gulf of Cádiz, the Azores Front exerts a major control on the palaeoclimatology of the region. Contrasting to the northern Gulf of Cádiz, where Mediterranean Outflow Water is the main water mass at similar water depths, the palaeoceanography of the studied area is mostly influenced by the amount of Antarctic Intermediate Water advected from the south. The density contrast between the Antarctic Intermediate Water and the overlying North Atlantic Central Water determined the strength of the prevailing internal tides and corresponding high current speeds, which drastically impacted the sedimentary record. The most notable impact is the presence of a 7.8 kyr condensed section (30.5-22.7 ka BP). The formation of the Pen Duick sediment drift was not just controlled by the strength of the bottom currents and the intensity of the internal tides, but also by the amount of (aeolian) sediment supplied to the region. Although variable, drift-growth phases seem to mainly occur during colder periods of the last glacial, i.e. Heinrich and Dansgaard-Oeschger events during the Marine Isotope Stage 3 and the late Marine Isotope Stage 2. These periods, characterised by increased aeolian dust supply and higher bottom currents, coincide with a phase of prolific cold-water coral growth and enhanced coral mound formation as recorded in numerous cores obtained from the southern Gulf of Cádiz. This implies that both records (on and off mound cores) are pivotal to provide the complete picture of the palaeo-climatic and palaeo-oceanographic conditions in the region. 
PY 2023
PD FEB
SO Depositional Record
SN 2055-4877
PU Wiley
VL 9
IS 1
UT 000897699800001
BP 30
EP 51
DI 10.1002/dep2.212
ID 91346
ER

EF