Process-based modelling of hydro- and morphodynamics around the Anmok submerged breakwater

Abstract

The use of the detached offshore submerged breakwater (SBW) for coastal protection has an increasing popularity due to its low aesthetic impact on the natural environment. Submerged breakwaters however have only rarely been adopted and therefore its efficacy remains largely unknown (Ranasinghe et al. 2010). Shoreline erosion has been reported in the lee of submerged breakwaters in several field observations and therefore a better understanding of the characteristics of the shoreline response to submerged breakwaters is required. In this thesis insight is gained in the hydrodynamic patterns and the associated morphological response around a constructed submerged breakwater at the frequently monitored field site Anmok beach and in general the capability to reliably simulate coastal morphological response to submerged breakwaters is developed. In addition better understanding on modelling severe wave conditions in Delft3D has led to new possibilities with this model.