FN Archimer Export Format
PT J
TI Secondary flow in contour currents controls the formation of moat-drift contourite systems
BT 
AF Wilckens, Henriette
   Eggenhuisen, Joris T.
   Adema, Pelle H.
   Hernández-Molina, F. Javier
   SILVA JACINTO, Ricardo
   Miramontes, Elda
AS 1:1,2;2:3;3:3;4:4,5;5:6;6:1,2;
FF 1:;2:;3:;4:;5:PDG-REM-GEOOCEAN-ASTRE;6:;
C1 Faculty of Geosciences, University of Bremen, Bremen, Germany
   MARUM - Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany
   Faculty of Geosciences, Utrecht University, P.O. Box 80021, TA, Utrecht, Netherlands
   Department of Earth Sciences, Royal Holloway University of London, Egham, Surrey, UK
   Marine Geosciences Division, CSIC & UGR, IACT, Armilla, Granada, Spain
   UMR 6538 GEO-OCEAN, Ifremer, Univ Brest, CNRS, Univ. Bretagne-Sud, Plouzané, France
C2 UNIV BREMEN, GERMANY
   UNIV BREMEN MARUM, GERMANY
   UNIV UTRECHT, NETHERLANDS
   UNIV ROYAL HOLLOWAY LONDON, UK
   CSIC, SPAIN
   IFREMER, FRANCE
SI BREST
SE PDG-REM-GEOOCEAN-ASTRE
UM GEO-OCEAN
IN WOS Ifremer UMR
   DOAJ
   copubli-europe
IF 7.9
TC 2
UR https://archimer.ifremer.fr/doc/00852/96438/104735.pdf
   https://archimer.ifremer.fr/doc/00852/96438/104736.pdf
LA English
DT Article
AB Ocean currents control seafloor morphology and the transport of sediments, organic carbon, nutrients, and pollutants in deep-water environments. A better connection between sedimentary deposits formed by bottom currents (contourites) and hydrodynamics is necessary to improve reconstructions of paleocurrent and sediment transport pathways. Here we use physical modeling in a three-dimensional flume tank to analyse the morphology and hydrodynamics of a self-emerging contourite system. The sedimentary features that developed on a flat surface parallel to a slope are an elongated depression (moat) and an associated sediment accumulation (drift). The moat-drift system can only form in the presence of a secondary flow near the seafloor that transports sediment from the slope toward the drift. The secondary flow increases with higher speeds and steeper slopes, leading to steeper adjacent drifts. This study shows how bottom currents shape the morphology of the moat-drift system and highlights their potential to estimate paleo-ocean current strength. 
PY 2023
PD SEP
SO Communications Earth & Environment
SN 2662-4435
PU Springer Science and Business Media LLC
VL 4
IS 1
UT 001062691500002
DI 10.1038/s43247-023-00978-0
ID 96438
ER

EF