Development of a non-equilibrium beach in a low-energy lake environment
Using the Noordstrand of the Marker Wadden as a case study
F.W. Wellen (TU Delft - Civil Engineering & Geosciences)
Anne M. Ton – Mentor (TU Delft - Coastal Engineering)
S. G.J. Aarninkhof – Graduation committee member (TU Delft - Hydraulic Engineering)
M Zijlema – Graduation committee member (TU Delft - Environmental Fluid Mechanics)
Thomas Vijverberg – Graduation committee member (Royal Boskalis Westminster)
Robbin Van Santen – Graduation committee member (ARCADIS Nederland)
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Abstract
The Noordstrand of the Marker Wadden has been subject to much more erosion than expected. From our current understanding of this low-energy system we cannot explain what has been the cause of this. The goal of this thesis is to create a better understanding of the different processes responsible for the development of this non-equilibrium beach in a low-energy lake environment. A better understanding of the link between hydrodynamic and morphodynamic processes can be used for the maintenance of the existing Marker Wadden beaches and the design of new sandy protections in this kind of systems. By combining the results of a hydrodynamic and morphodynamic data analysis with the results of the Delft3D Marker Wadden model, it is possible to create a conceptual system description. This can be used to improve our understanding of the Noordstrand development and the responsible processes. In this system description the influence of the general Markermeer system cannot be neglected as the different systems (Markermeer, Marker Wadden and Noordstrand) cannot be regarded separately as the different hydrodynamic processes are linked.