A well-designed barrier might be the difference between severe flooding and no flooding when a storm surge hits — this demonstration shows which designs work best and why.
Whilst in the UK Dan Rodger worked with the JBA Trust on the development of several demonstration wave tanks. JBA Trust is an independent charity that supports research and promotes the development of knowledge and skills in environmental risk management, especially in the water environment.
In this 12 minute video, Dan uses the wave tank to demonstrate the effectiveness of different types of coastal defenses on reducing overtopping and flood risk. The demonstration measures the rates of overtopping for the following defenses and conditions: (i) a beach during a storm surge, (ii) vertical and recurved sea walls (with and without a beach), (iii) stepped and sloped revetments, (iv) rock armour, and (v) a submerged near-shore breakwater.
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