FN Archimer Export Format
PT J
TI Particles transformation in estuaries: Fe, Mn and REE signatures through the Loire Estuary
BT 
AF THIBAULT DE CHANVALON, A.
   METZGER, E.
   MOURET, A.
   KNOERY, Joel
   CHIFFOLEAU, Jean-Francois
   BRACH-PAPA, Christophe
AS 1:1,2;2:1;3:1;4:2;5:2;6:2;
FF 1:;2:;3:;4:PDG-RBE-BE-LBCM;5:PDG-RBE-BE;6:PDG-ODE-LITTORAL-LERPAC;
C1 Univ Angers, CNRS, UMR 6112, LPG,BIAF, F-49045 Angers, France.
   IFREMER, LBCM, Rue Ile Yeu, F-44300 Nantes, France.
C2 UNIV ANGERS, FRANCE
   IFREMER, FRANCE
SI NANTES
   TOULON
SE PDG-RBE-BE-LBCM
   PDG-RBE-BE
   PDG-ODE-LITTORAL-LERPAC
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 1.888
TC 9
UR https://archimer.ifremer.fr/doc/00367/47848/47935.pdf
LA English
DT Article
CR CAMELIA
AB During their transfer across estuaries, particles endure numerous cycles of deposition-resuspension accompanied by several redox oscillations. These oscillations are likely to modify the particles content of redox sensitive metals such as Fe, Mn and two rare earth elements (REE): Ce and Eu. The present paper focuses on the fate of particles originating from the Loire Estuary by the study of chemical composition changes of both total and ascorbate-extracted phases. Transformations of particles buried in the sediment are estimated from sediment cores sampled in an estuarine intertidal mudflat Changes affecting particles that are transferred to the ocean are evaluated by comparing the composition of suspended particulate matter (SPM) from riverine time series to coastal marine SPM. Our results show an important decrease of SPM iron content corresponding to a loss of 14.3% of total iron. However, no iron storage was observed in the intertidal mudflat. Manganese is probably also lost during the transfer but the riverine temporal variability prevents its quantification. The similarity of Ce and Eu signatures between highly concentrated SPM and sedimentary particles suggests that most estuarine transformations are probably induced by early diagenesis during deposition (and frequently anoxic) periods.
PY 2016
PD DEC
SO Journal Of Sea Research
SN 1385-1101
PU Elsevier Science Bv
VL 118
UT 000390826000009
BP 103
EP 112
DI 10.1016/j.seares.2016.11.004
ID 47848
ER

EF