To calculate tsunami forces on coastal structures, the wave type in front of the coast is of great importance. Hence this paper aims to find ways to predict the type of tsunami wave breaking. Based on literature review, video footage, analytical reasoning and numerical modelling (SWASH) it can be concluded that both the continental shelf slope (alpha_2) and the bay geometry (beta) have a significant influence on the transformation of a tsunami wave near the coastline. After conducting 1D and 2DH wave simulations, a distinction is made in three types of tsunami waves; a non-breaking front (surging), a breaking front (plunging) and an undular bore breaking front (spilling). Tsunami waves transform into these three wave types for a steep continental shelf, an intermediate sloped continental shelf, and a gentle sloped continental shelf respectively. A new tsunami breaker parameter (xi_tsunami) is proposed to predict the type of wave at the coastline in a quantitative way.

Design of a port in Morocco, as part of the design workshop 2017 in Caen, France.
This report includes a design from the new Nador West Med Port near Nador, Morocco. Given requirements are an entrance to the northeast and minimal dredging works to be conducted. A layout of the harbour is made for wave directions during storm from the northeast and northwest. A maximum downtime of the harbour of less than 1% of the year is allowed. The harbour will accommodate smaller vessels, such as ro-ro, general cargo, and container feeders up to larger vessels for bulk transport, crude oil and product tankers, and container mother ships. Structural designs are made for two cross-sections of breakwaters, a rubble mound and a vertical caisson, a mooring structure for tankers with mooring and breasting dolphins, and a typical cross-section of a quay wall.