Abstract
The global transportation of fossil fuels occurs mainly by sea and grows annually, along with the risks to the marine ecosystems, especially in the vicinity of navigation routes. Numerical simulations able to reproduce realistic oil spill scenarios can be utilised for planning risk mitigation actions. This study is based on simulating the behaviour and weathering rates recorded during the first 24 h after an oil spill that occurred in an estuarine region. The numerical system used is the ECOS (Easy Coupling Oil System) oil spill model coupled to the three-dimensional hydrodynamic model Telemac-3D. The hydrodynamic results were analysed considering wind velocity fields and currents, which are the dominant forces in the displacement and behaviour of the oil. The reproducibility of the oil leak was confirmed by comparing the results of the simulations with the official environmental emergency report of the accident. The strong correlation between the simulation and the report showcases the capacity of the simulation methodology to reproduce real case scenarios of oil spills.
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