1. Dynamics of Turbid Plumes Generated by Marine Aggregate Dredging: An Example of a Macrotidal Environment (the Bay of Seine, France)
- Author
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R. Lafite, Pierre-Arnaud Duclos, Sophie Le Bot, Elie Rivoalen, and Antoine Cuvilliez
- Subjects
Hydrology ,geography ,geography.geographical_feature_category ,Aggregate (composite) ,Ecology ,Plume ,Dredging ,symbols.namesake ,Oceanography ,Acoustic Doppler current profiler ,symbols ,Bay ,Geology ,Seabed ,Lagrangian ,Channel (geography) ,Earth-Surface Processes ,Water Science and Technology - Abstract
Duclos, P.-A.; Lafite, R.; Le Bot, S.; Rivoalen, E., and Cuvilliez, A., 2013. Dynamics of turbid plumes generated by marine aggregate dredging: an example of a macrotidal environment (the Bay of Seine, France). On the French marine shelf, marine aggregates are currently dredged by trailing suction hopper dredgers (TSHD), without screening, with an overflow process, with or against currents. In the framework of the Groupement d'Interet Scientifique (GIS) Suivi des Impacts de l'Extraction de Granulats Marins (SIEGMA), the dynamics of the turbid plume formed by the overflow was studied at an experimental dredging site (0.6 km2), located in the Bay of Seine (eastern English Channel), a macrotidal environment where the seabed is composed of sandy gravel. An original field strategy based on Lagrangian monitoring, using the back-scattered signal of an Acoustic Doppler Current Profiler (ADCP), Laser In Situ Scattering and Transmissometry (LISST) measurements, water samples, and aerial photographs, has sh...
- Published
- 2013
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