Laboratory experiments on wave interaction with vegetated beds
Dr Dominic van der A, University of Aberdeen
Friday 7 May 2021, 11:00am via Zoom
Sea level rise and increased frequency and intensity of storms associated with climate change have led to an increased interest in the role of vegetation (e.g. sea grass meadows, salt marshes and mangroves) for protection against coastal erosion and flooding. Nature-based coastal protection, including the use of vegetation, offers the possibility of coastal solutions that adapt to climate change, while also providing other ecosystem services. However, predicting the performance of nature-based solutions is a challenge because of a lack of understanding of the fundamental processes at work as waves interact with vegetation.
In this seminar I will present an overview of some recent laboratory experiments conducted in the Fluid Mechanics Laboratory at the University of Aberdeen to study the interaction between waves and submerged vegetation canopies. The main approach in these experiments is to isolate the key hydrodynamic processes and obtain insights and data that can be used to develop models for use in coastal engineering practice.
The experiments were conducted in two different facilities: a 20m long random wave flume and an oscillatory flow tunnel - a unique research facility capable of generating wave-induced oscillatory flows with periods and amplitudes equivalent to large wave conditions in the field.