The effect of dredging off Great Yarmouth on the wave conditions and erosion of the North Norfolk coast

TitleThe effect of dredging off Great Yarmouth on the wave conditions and erosion of the North Norfolk coast
Publication TypeTyndall Working Paper
SeriesTyndall Centre Working Papers
Secondary TitleTyndall Centre Working Paper 97
Keywordsdredging, erosion, Great Yarmouth, North Norfolk coast, wave conditions
AuthorsWalkden, M., and P. Stansby
Year of Publication2006
Abstract

A large scale hydrodynamic model and a regional coastal morphological model have been used to explore the relationship between coastal erosion in north Norfolk and seabed lowering due to dredging off Great Yarmouth. A scenario of extreme dredging was defined and used to modify the boundary conditions of the hydrodynamic model to reveal the sensitivity of nearshore waves. The modified waves were then used to drive the morphological model to predict the coastal erosion. The resulting shorelines were compared to predictions previously made with undredged bathymetry. No significant difference was found in the nearshore wave climate or the shoreline erosion due to the dredging scenario.

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