FN Archimer Export Format
PT J
TI Circulation Changes in the Eastern Mediterranean Sea Over the Past 23,000 Years Inferred From Authigenic Nd Isotopic Ratios
BT 
AF CORNUAULT, Marine
   TACHIKAWA, Kazuyo
   VIDAL, Laurence
   GUIHOU, Abel
   SIANI, Giuseppe
   DESCHAMPS, Pierre
   BASSINOT, Franck
   REVEL, Marie
AS 1:1;2:;3:1;4:1;5:2;6:1;7:3,4;8:5;
FF 1:;2:;3:;4:;5:;6:;7:;8:;
C1 Aix Marseille Univ, CNRS, Ctr Europeen Rech & Enseignement Geosci Environm, IRD,Coll France, Aix En Provence, France.
   Univ Paris 11, CNRS, UMR 8148, GEOPS, Orsay, France.
   UVSQ, CNRS, Lab Sci Climat & Environm, IPSL,CEA,UMR8212, Gif Sur Yvette, France.
   Univ Paris Saclay, Gif Sur Yvette, France.
   Geoazur, UMR 7329, Valbonne, France.
C2 UNIV AIX MARSEILLE, FRANCE
   UNIV PARIS 11, FRANCE
   UNIV VERSAILLES, FRANCE
   UNIV PARIS SACLAY, FRANCE
   UNIV NICE, FRANCE
IF 2.888
TC 22
UR https://archimer.ifremer.fr/doc/00496/60789/64957.pdf
   https://archimer.ifremer.fr/doc/00496/60789/64958.pdf
   https://archimer.ifremer.fr/doc/00496/60789/64959.pdf
LA English
DT Article
CR MD 138 / VANIL
   MD 140 / PRIVILEGE
BO Marion Dufresne
AB The Eastern Mediterranean Sea (EMS) is a key region to study circulation change because of its own thermohaline circulation. In this study, we focused on intermediate/deep water circulation since the Last Glacial Maximum (LGM) including the sapropel S1 period. Two cores from the Levantine Sea and the Strait of Sicily, respectively, collected at 1,780 m and 771 m water depth, were studied using Nd-143/Nd-144 (epsilon(Nd)) of foraminiferal tests and leachates as well as benthic foraminiferal stable isotopes (delta C-13, delta O-18). This approach allowed the determination of variations in (1) the North Atlantic water contribution to the Mediterranean basin, (2) water exchanges at the Strait of Sicily, and (3) the influence of the Nile River over the last 23,000 years. During the LGM, high benthic foraminiferal delta C-13 values indicate well-ventilated intermediate and deep waters in the EMS. The epsilon(Nd) values were more radiogenic than at present, reflecting a smaller contribution of unradiogenic North Atlantic waters to the EMS due to reduced exchange at the Strait of Sicily. The sluggish circulation in the EMS initiated during deglaciation was further enhanced by increased Nile River freshwater inputs between 15 ka BP and the S1 period. Partial dissolution of Nile River particles contributed to an increase in EMS epsilon(Nd). The large epsilon(Nd) gradient between the EMS and the Western Mediterranean Sea observed during LGM and S1 suggests that each basin had a distinct circulation mode. Decreasing epsilon(Nd) values at the Strait of Sicily after S1 reflected improved water exchange between both basins, leading to the modern circulation pattern. 
PY 2018
PD MAR
SO Paleoceanography And Paleoclimatology
SN 2572-4517
PU Amer Geophysical Union
VL 33
IS 3
UT 000430991200002
BP 264
EP 280
DI 10.1002/2017PA003227
ID 60789
ER

EF