FN Archimer Export Format
PT J
TI Direct monitoring reveals initiation of turbidity currents from extremely dilute river plumes
BT 
AF HAGE, Sophie
   Cartigny, Matthieu J.B.
   Sumner, Esther J.
   Clare, Michael A.
   Hughes Clarke, John E.
   Talling, Peter J.
   Lintern, D. Gwyn
   Simmons, Stephen M.
   Silva Jacinto, Ricardo
   Vellinga, Age J.
   Allin, Joshua R.
   Azpiroz‐Zabala, Maria
   Gales, Jenny A.
   Hizzett, Jamie L.
   Hunt, James E.
   Mozzato, Alessandro
   Parsons, Daniel R.
   Pope, Ed L.
   Stacey, Cooper D.
   Symons, William O.
   Vardy, Mark E.
   Watts, Camilla
AS 1:1,2;2:3;3:2;4:1;5:4;6:3;7:5;8:6;9:7;10:2;11:8;12:9;13:10;14:2;15:1;16:2;17:6;18:3;19:5;20:11;21:1;22:2;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:PDG-REM-GM-LGS;10:;11:;12:;13:;14:;15:;16:;17:;18:;19:;20:;21:;22:;
C1 National Oceanography Centre Southampton European Way Southampton ,U.K.
   School of Ocean and Earth Sciences, University of Southampton European Way Southampton, U.K.
   Department of GeographyDurham University South,U.K.
   Center for Coastal and Ocean Mapping, University of New Hampshire Durham NH ,USA
   Natural Resources Canada, Geological Survey of Canada Sidney BC ,Canada
   Energy and Environment Institute, University of Hull ,U.K.
   Marine Geosciences Unit, IFREMER, Centre de Brest Plouzané, France
   Geotek Ltd, 4 Sopwith Way Daventry, UK
   Faculty of Civil Engineering and Geosciences, 2628 CN Delft University, The Netherlands
   School of Biological and Marine Sciences, Drake Circus, University of Plymouth, PL48AA, U.K.
   CGG Robertson Llandudno North Wales ,UK
C2 NOC, UK
   UNIV SOUTHAMPTON, UK
   UNIV DURHAM, UK
   UNIV NEW HAMPSHIRE, USA
   GEOL SURVEY CANADA, CANADA
   UNIV HULL, UK
   IFREMER, FRANCE
   GEOTEK LTD, UK
   UNIV DELFT, NETHERLANDS
   UNIV PLYMOUTH, UK
   CGG ROBERTSON, UK
SI BREST
SE PDG-REM-GM-LGS
IN WOS Ifremer UPR
   copubli-europe
   copubli-int-hors-europe
IF 4.497
TC 64
UR https://archimer.ifremer.fr/doc/00514/62594/66952.pdf
   https://archimer.ifremer.fr/doc/00514/62594/66954.pdf
LA English
DT Article
AB Rivers (on land) and turbidity currents (in the ocean) are the most important sediment transport processes on Earth. Yet, how rivers generate turbidity currents as they enter the coastal ocean remains poorly understood. The current paradigm, based on laboratory experiments, is that turbidity currents are triggered when river plumes exceed a threshold sediment concentration of ~1 kg.m‐3. Here we present direct observations of an exceptionally dilute river‐plume, with sediment concentrations one order of magnitude below this threshold (0.07 kg.m‐3), which generated a fast (1.5 m.s‐1), erosive, short‐lived (6 min) turbidity current. However, no turbidity current occurred during subsequent river‐plumes. We infer that turbidity currents are generated when fine‐sediment, accumulating in a tidal turbidity maximum, is released during spring tide. This means that very dilute river‐plumes can generate turbidity currents more frequently and in a wider range of locations, than previously thought. 
PY 2019
PD OCT
SO Geophysical Research Letters
SN 0094-8276
PU American Geophysical Union (AGU)
VL 46
IS 20
UT 000493036700001
BP 11310
EP 11320
DI 10.1029/2019GL084526
ID 62594
ER

EF