Modelling Shore-parallel Breakwaters Effects on Coastal Morphology in Various Wave and Tidal Conditions at Sea Palling

摘要

In the paper, the coast area at Sea Palling, Norfolk, UK has beenstudied, where 9 shore-parallel segmented breakwaters wereconstructed, including 4 surface-piercing and 5 low-crestedbreakwaters. The time-varying natural waves and tides combined withman-made a group of shore-parallel breakwaters makes the coastalmorphology considerably complicated. In order to identify the maindrivers on the morphological changes in nearshore region, a twodimensional depth-integrated and wave period-averaged coastalmorphological model: COAST2D, is used to model 10 designed casesto analyze the beach and morphological response under 2 meso-tidesand 4 wave conditions. The computed results shows wave heightdominates the quantities of sediment transport volume, and wavedirections as well as tides type such as neap and spring tides can changethe morphological erosion and deposition patterns.