Hydrodynamic modelling of bottom currents and sediment transport in the Canyon São Tomé (Brazil)
José A. M. Lima, Osmar O. Moller, Jr, Adriano R. Viana, Rafael Piovesan, 2007. "Hydrodynamic modelling of bottom currents and sediment transport in the Canyon São Tomé (Brazil)", Economic and Palaeoceanographic Significance of Contourite Deposits, A. R. Viana, M. Rebesco
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This study presents the hydrodynamic modelling of ocean currents along the Canyon São Tomé, Campos Basin, Brazil, and their impact on sediment transport. The objective is to develop a tool to simulate the interaction between bottom currents and the submarine physiography, and to depict the relative importance of any individual current forcing mechanism as a sediment-reworking agent. This paper presents the evolution of along-channel currents over a tidal cycle and the simulation of a turbidity current. The resultant sediment transport under the combination of turbidity and oceanic currents is also simulated. This model is a step forward towards the understanding of the geometric and textural modifications imposed by bottom currents upon gravity-driven deposits, which is of great importance for the oil industry.