Wave Transmission over Artificial Reefs: A Physical Model Study

In this research, the influence of the permeability and the porosity of artificial reefs on wave transmission and the sheltered habitat of marine life is investigated. A physical model is used to find the answer to this question. <br/>The main finding of this research is that a hollow, perforated structure can act both as an artificial reef that...

The influence of submerged coastal structures on nearshore flows and wave runup

Engineered and natural submerged coastal structures (e.g., submerged breakwaters and reefs) modify incident wave fields and thus can alter hydrodynamic processes adjacent to coastlines. Although submerged structures are generally assumed to promote beach protection by dissipating waves offshore and creating sheltered conditions in their lee,...

A Combined Breakwaters System: A Wave Attenuation Study on the Combination of Submerged and Floating Breakwaters using REEF3D

Coastal zones have been a dynamic area and most favoured locations utilized for living, leisure, recreational activities, tourism, commerce and many other human activities. Submerged and floating breakwaters have been used as effective systems to protect these zones from wave attack. However, they are only effectively functional if the incident...

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

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...

Developing a design criterion for the shoreline response to multiple submerged breakwaters

Shore-parallel submerged breakwaters (SBWs) appear as an attractive form of coastal protection. Compared to their emergent counterpart there is no impact on the beach amenity and aesthetics. In addition, there is a possibility for recreational purposes. However, the actual application of SBWs is often discouraged because the complexity of the...

3D wave transmission around permeable submerged breakwaters with the use of Artificial Neural Networks

Wave transmission is a very important design parameter for submerged porous breakwater design, as it defines the dimensions of the breakwater as well as the cost and construction process. The spatial distribution of the wave transmission parameter influences the current pattern on the lee of the breakwater and therefore the sediment transport...

Circulation patterns and shoreline response induced by submerged breakwaters

Submerged shore-parallel breakwaters for coastal defence (henceforth SBWs) are a good compromise between the need to mitigate the effects of waves on the coast and the ambition to ensure the preservation of the landscape and water quality. However, if not properly designed, such structures can force circulation patterns that enhance shoreline...

Process-based modelling of morphological response to submerged breakwaters

Submerged breakwaters (SBWs) are becoming increasingly popular as alternative coastal defence system due to the lack of impact on beach amenity and aesthetics compared to common emerged beach protection measures. However, the recent significant amount of failing SBWs resulting in additional shoreline erosion reported in [Ranasinghe and Turner...

AmWaj Island development, Bahrain: Physical modelling of submerged breakwaters

The Am Waj Islands Project involves the development of a new island off the north coast of Muharraq Island in Bahrain (see Figure 1). To protect this new island from wave attack, a scheme of submerged breakwaters has been planned, which should also function as the anchor for a sandy beach, preventing the sand from being washed out into the sea....

Nearshore efffects of submerged breakwaters: Laboratory experiments in a wave basin 2HD numerical modeling

This master thesis is a contribution to the Dynamics of Beaches project, which is a part of the EU funded Human Capital and Mobility program (HCM). In this study, the 3D-effects of detached segmented submerged breakwaters, in the nearshore zone, primarily on the hydrodynamic processes and only secondarily on the morphodynamics, are investigated....

Effect of submerged breakwater on profile development

This study is part of a Human Capital and Mobility Project called 'Dynamics of Beaches'. This project is a co-operation of six European universities which work together in solving some unknown aspects of a submerged breakwater by means of model experiments. Several agreements about the experiments were made between the partners. These agreements...