Water fluxes and renewal rates at Pertuis d'Antioche/Marennes-Oléron Bay, France

摘要: Abstract Water renewal is crucial for removal of pollutants (e.g. oil), organic loadings, and oxygen supply within shellfish farms. This study presents a 3-D hydrodynamic model with local resolution 500 m used to quantify water fluxes at Pertuis d'Antioche/Marennes-Oleron Bay, France. Open boundary conditions were based on MyOcean products ( http://www.myocean.eu/ ) downscaled using four nested domains increasing from the large scale. Results six-month run compared data giving good agreement. The spatial variation was characterized by dividing coastal waters into boxes which grouped main areas. A Lagrangian coupled track history renewal. filled tracers pattern particles passing through them quantified. Model results integrated over volume calculate across box boundaries. integration provide horizontal vertical assess surface bottom in bay. Depending tide freshwater conditions, ranges between 2 18 days. Main current patterns investigated drawing streamlines residual velocity field. It found that eddies can slow down rates, either favour transport or locally trap inside An assessment typical trajectories released different locations depths provided insights potential dispersion passive tracers, including spilled oil, larvae.