Many small wave-dominated inlets are naturally unstable and require regular dredging. To mitigate the costs of these operations, the dredged channels should be designed to bring the inlet close to equilibrium and minimise flood dominance. However, it is often unclear how to optimise the configuration of the channels. This study focuses on a small lagoon on the western Portuguese coast that has been subject to frequent and diverse interventions. A process-based morphodynamic model is applied to compare the dredging plan that has been followed for the last 15 years with two new alternatives. These alternative dredging plans increase the tidal prism and reduce flood dominance, mainly due to the higher channel cross-section. Secondary transverse channels do not affect the morphodynamics significantly. For future dredging operations, it is suggested that the bottom depth of the main natural channel be dredged to chart datum and a secondary channel be added to the previous channel with the same bottom depth and...

中文翻译：

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评估以波浪为主的进水口的三种疏plans计划

许多小波为主的进口口自然是不稳定的，需要定期进行疏.。为了减轻这些操作的成本，疏designed通道的设计应使进口接近平衡并最大程度地减少洪水的影响。但是，通常不清楚如何优化通道的配置。这项研究的重点是葡萄牙西部沿海的一个小泻湖，该泻湖受到了频繁而多样的干预。应用基于过程的形态动力学模型将过去15年遵循的疏dr计划与两个新的备选方案进行比较。这些替代性挖泥计划增加了潮汐棱镜并降低了洪水控制力，这主要是由于较高的航道横截面。次要横向通道不会显着影响形态动力学。对于将来的挖泥作业，