FN Archimer Export Format
PT J
TI Nd isotopic composition of water masses and dilution of the Mediterranean outflow along the southwest European margin
BT 
AF COPARD, K.
   COLIN, C.
   FRANK, N.
   JEANDEL, C.
   MONTERO-SERRANO, J-C
   REVERDIN, G.
   FERRON, Bruno
AS 1:1,2;2:1;3:2;4:4;5:1,2;6:3;7:5;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 Univ Paris 11, Lab Interact & Dynam Environm Surface, CNRS, UMR 8148, F-91405 Orsay, France
   CEA, CNRS, Lab Sci Climat & Environm, Lab Mixte, F-91198 Gif Sur Yvette, France
   Univ Paris 06, Lab Oceanographie & Climatol Experimentat & Anal, Inst Pierre Simon Laplace, F-75252 Paris 05, France
   Observ Midi Pyrenees, Lab Etud Geophys & Oceanographie Spatiale, CNRS, UMR 5566, F-31400 Toulouse, France
   IFREMER, Ctr Brest, Lab Phys Oceans, UMR 6523, F-29280 Plouzane, France
C2 UNIV PARIS 11, FRANCE
   CEA, FRANCE
   UNIV PARIS 06, FRANCE
   OBSERV MIDI PYRENEES, FRANCE
   CNRS, FRANCE
IF 3.021
TC 28
TU Centre national d'études spatiales
   Centre national de la recherche scientifique
   Institut de recherche pour le développement
   Institut français de recherche pour l'exploitation de la mer
   Université Paris-Sud
   Université de Bretagne Occidentale
   Université de Toulouse III - Paul Sabatier
UR https://archimer.ifremer.fr/doc/00040/15108/12571.pdf
LA English
DT Article
CR BIOGAS 01
   BISCOT
   CAROLS 2007
   CAROLS 2008
   OVIDE 4
   THALASSA
   THALASSA 01-73
   THALASSA 06-73
BO Perle
   Cote D'Aquitaine
   Côtes De La Manche
   Thalassa
DE ;European margin;Nd isotopic composition;deep‐sea corals;water masses
AB Nd isotopic compositions (epsilon Nd) of seawater profiles and deep-sea corals collected off the coast of Iberia and from the Bay of Biscay were measured (1) to constrain the Nd isotopic composition of water masses along the southwest European margin, (2) to track the Mediterranean Outflow Water (MOW) during its northward propagation, and (3) to establish hydrological changes during the last 1500 years. The Eastern North Atlantic Central Water (ENACW) is characterized by Nd isotopic composition of around -12.0. Mediterranean Sea Water (MSW) is collected from 800 and 1200 m depth and is characterized by epsilon Nd values ranging from -10.9, off the coast of Iberia, to -11.6 in the Bay of Biscay. These epsilon Nd results suggest a strong dilution of the pure MOW at the Strait of Gibraltar (epsilon Nd -9.4) of approximately 40% and 30% along its northward circulation pathway essentially with a contribution from ENACW. At around 2000 m depth, epsilon Nd water profiles display the occurrence of a nonradiogenic water mass (epsilon Nd -13), originating from the Labrador Sea (Labrador Sea Water). Fossil deep-sea corals, dated between 84 and 1500 years, display Nd isotopic compositions that vary moderately from present-day seawater values, suggesting a weaker influence of MOW in the formation of MSW during the Dark Ages and the Little Ice Age. These recent cold events seem to be associated with a reduction in the northward penetration of MSW, which may result from a greater eastward extension of the middepth subpolar gyre and/or a reduction of MSW formation, likely tied to a variation in deep Mediterranean water production.
PY 2011
PD JUL
SO Geochemistry Geophysics Geosystems - G3
SN 1525-2027
PU American Geophysical Union
VL 12
IS Q06020
UT 000292380000002
DI 10.1029/2011GC003529
ID 15108
ER

EF