FN Archimer Export Format
PT J
TI Carbon and silica megasink in deep-sea sediments of the Congo terminal lobes
BT 
AF Rabouille, C.
   Dennielou, Bernard
   Baudin, F.
   Raimonet, M.
   Droz, Laurence
   Khripounoff, Alexis
   Martinez, P.
   Mejanelle, L.
   Michalopoulos, P.
   Pastor, Lucie
   Pruski, A.
   Ragueneau, Olivier
   Reyss, J.-L.
   Ruffine, Livio
   Schnyder, J.
   Stetten, E.
   Taillefert, M.
   Tourolle, Julie
   Olu, Karine
AS 1:1;2:2;3:3;4:4;5:5;6:6;7:7;8:8;9:9;10:6;11:8;12:4;13:1;14:2;15:3;16:3;17:10;18:6;19:6;
FF 1:;2:PDG-REM-GM-LGS;3:;4:;5:;6:PDG-REM-EEP-LEP;7:;8:;9:;10:PDG-REM-EEP-LEP;11:;12:;13:;14:PDG-REM-GM-LCG;15:;16:;17:;18:PDG-REM-EEP-LEP;19:PDG-REM-EEP-LEP;
C1 Laboratoire des Sciences du Climat et de l’Environnement, UMR CEA-CNRS-UVSQ 8212 et IPSL, Université Paris-Saclay, Avenue de la Terrasse, 91190, Gif sur Yvette, France
   Unité de Recherche Géosciences Marines, IFREMER, 29280, Plouzané, France
   Institut des Sciences de la Terre de Paris, Sorbonne Université, CNRS, UMR 7193, 4 Place Jussieu, 75005, Paris, France
   Laboratoire des Sciences de l'Environnement Marin, UMR UBO-CNRS, Institut Universitaire Européen de la Mer, 29280, Plouzané, France
   Laboratoire Domaines Océaniques, UMR UBO-CNRS6538, Institut Universitaire Européen de la Mer, 29280, Plouzané, France
   IFREMER Centre Bretagne, Unité de Recherche Etude des Ecosystèmes Profonds, (REM-EEP-LEP), 29280, Plouzané, France
   Environnements et Paléoenvironnements Océaniques et Continentaux, Université de Bordeaux, UMR 5805, Allée Geoffroy St Hilaire, 33615, Pessac Cedex, France
   Laboratoire d’Ecogéochimie des Environnements Benthiques, Sorbonne Université, CNRS, UMR 8222, Observatoire Océanologique, 66650, Banyuls-sur-Mer, France
   Institute of Oceanography, Hellenic Center for Marine Research, 46.7 km Athens-Sounion An, Anavyssos, 19013, Greece
   School of Earth and Atmospheric Sciences, Georgia Institute of Technology, 311 Ferst Dr., Atlanta, GA, 30332, USA
C2 UNIV PARIS SACLAY, FRANCE
   IFREMER, FRANCE
   UNIV PARIS 06, FRANCE
   UBO, FRANCE
   UBO, FRANCE
   IFREMER, FRANCE
   UNIV BORDEAUX, FRANCE
   UNIV PARIS 06, FRANCE
   HELLENIC CTR MARINE RES, GREECE
   GEORGIA INST TECHNOL, USA
SI BREST
SE PDG-REM-GM-LGS
   PDG-REM-EEP-LEP
   PDG-REM-GM-LCG
UM LEMAR
   LGO
IN WOS Ifremer UPR
   WOS Cotutelle UMR
   copubli-france
   copubli-europe
   copubli-univ-france
   copubli-int-hors-europe
IF 3.803
TC 18
UR https://archimer.ifremer.fr/doc/00511/62289/66720.pdf
LA English
DT Article
CR CONGOLOBE
   WACS
BO Pourquoi pas ?
DE ;Present;Paleoceanography;South Atlantic;Inorganic geochemistry;Organic geochemistry;Sedimentology-marine cores
AB Carbon and silicon cycles at the Earth surface are linked to long-term variations of atmospheric CO2 and oceanic primary production. In these cycles, the river-sea interface is considered a biogeochemical hotspot, and deltas presently receive and preserve a major fraction of riverine particles in shallow water sediments. In contrast, periods of glacial maximum lowstand were characterized by massive exports of sediments to the deep-sea via submarine canyons and accumulation in deep-sea fans. Here, we calculate present-day mass balances for organic carbon (OC) and amorphous silica (aSi) in the terminal lobe complex of the Congo River deep-sea fan as an analogue for glacial periods. We show that this lobe complex constitutes a megasink with the current accumulation of 18 and 35% of the OC and aSi river input, respectively. This increases the estimates of organic carbon burial by 19% in the South Atlantic Ocean in a zone representing less than 0.01% of the basin. These megasinks might have played a role in carbon trapping in oceanic sediments during glacial times. 
PY 2019
PD OCT
SO Quaternary Science Reviews
SN 0277-3791
PU Elsevier BV
VL 222
UT 000491685900019
DI 10.1016/j.quascirev.2019.07.036
ID 62289
ER

EF