AbstractThe existing empirical prediction formulae to determine the wave overtopping characteristics are mainly based on the laboratory measurements with the use of an impermeable foreshore slope in front of the structure. Recently, EurOtop (2016), an updated version of previous overtopping manual has been published with revised empirical equations to estimate mean overtopping discharge rates at plain vertical walls with and without foreshore.As past studies were mostly carried out at vertical seawalls on a fixed impermeable bed, little knowledge is available on the performance of these processes at coastal structures on a permeable shingle beach. This study presents the baseline overtopping characteristics at a plain vertical wall on an impermeable 1:20 foreshore slope, and compares the results with existing empirical predictions (EurOtop, 2016). In this paper, only the results on mean overtopping discharge and mean sediment rate at vertical walls are reported.
EurOtop (2016): EurOtop II - Manual on wave overtopping of sea defences and related structures: An overtopping manual largely based on European research, but for worldwide application.
Pearson (2010): Overtopping and Toe Scour at Vertical Seawalls. Proceedings of the 9th international conference on Coasts, marine structures and breakwaters: Adapting to change, Edinburgh, Institution of Civil Engineers, Thomas Telford Ltd, pp. 598-608.
Powell (1990): Predicting short term profile response for shingle beaches. Wallingford, UK, HR Wallingford, Report SR 219.
Salauddin (2018): Overtopping of vertical structures: new prediction methods to account for shingle beaches. Paper has been accepted for an oral presentation in the 7th International Conference on the Application of Physical Modelling in Coastal and Port Engineering and Science (Coastlab18), 22nd May - 26th May 2018, Santander, Spain