Influence of tide and waves on water renewal in Óbidos Lagoon, Portugal

摘要: The role of oceanic tide, wind stress, freshwater river inflows, and waves in the long-term circulation residence time Obidos Lagoon is investigated using a sensitivity analysis carried out by means two-dimensional model. MOHID modeling system coupled to Steady-State Spectral Wave model for simulate were implemented. For calculus, Lagrangian transport was used. Tidal forcing shown be dominant forcing, although storm must considered accurately circulation. enhances spatial distribution water time. Renewal scales varies from values 2 days near-ocean areas 3 weeks inner areas. Freshwater inflows decrease time, while increase. In heavy rain periods, decreases about 40% upper lagoon. When wave considered, increases between 10% 50% depending on lagoon area. increase explained sea level rise within (~1 m above average level) during periods. Average 16 tidal 9 when rivers are included (wet period), 18 considered.