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Accueil > Grands équipements > La plateforme tournante Coriolis > Projets de recherche

2016-CREST : Gravity currents in sub-marine canyons

September-October 2016

Dense buoyancy-driven flows in channels are the main transport pathway between shallow slope regions and the deep sea. In higher latitudes these stratified flows are known to be strongly affected by Coriolis forces, however, the influence of these rotational forces on turbulent energy production and dissipation, shear stress distribution, and entrainment is largely unknown.

A series of experiments have been carried out at the Coriolis platform to investigate the influence of Coriolis forces on turbulence in straight and sinuous submarine channels with non-erodible (fixed) beds. Work focusses on the turbulence structure of the bottom boundary layer, the presence and nature of Ekman boundary layers, mixing and entrainment at the gravity current - ambient interface, and the redistribution of turbulence within the flow as a result of three-dimensional bend flow.

- Jeffrey Peakall, University of Leeds, Leeds, United Kingdom

- Stephen Darby, University of Southampton, Southampton, United Kingdom

- Robert Michael Dorrell, University of Leeds, Leeds, United Kingdom

- Gareth Mark Keevil, University of Leeds, Leeds, United Kingdom

- Joel Sommeria, Centre National de la Recherche Scientifique, Grenoble, France

- Samuel Viboud, CNRS, Grenoble, France

- Anna Wåhlin, Department of Marine Sciences, Gothenburg, Sweden

- Mathew Graeme Wells, University of Toronto, Toronto, Canada