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Scientific support regarding hydrodynamics and sand transport in the coastal zone: literature and data review coastal zone Zeebrugge - Zwin
Trouw, K.; Zimmermann, N.; Wang, L.; De Maerschalck, B.; Delgado, R.; Verwaest, T.; Mostaert, F. (2015). Scientific support regarding hydrodynamics and sand transport in the coastal zone: literature and data review coastal zone Zeebrugge - Zwin. Version 4.0. WL Rapporten, 12_107. Flanders Hydraulics Research/IMDC: Antwerp. V, 74 + 4 p. appendices pp.
Part of: WL Rapporten. Waterbouwkundig Laboratorium: Antwerpen, more

Available in  Authors 
Document type: Project report

Keywords
Author keywords
    Erosion trends

Authors  Top 
  • Trouw, K., more
  • Zimmermann, N., more
  • Wang, L.
  • De Maerschalck, B., more

Abstract
    In this report the available literature and data relevant for the coastal zone between Zeebrugge and the Zwin is summarised.

    Since the extension of the harbour of Zeebrugge (finalised in 1986) a lot of bathymetrical data are available. With these data the evolution around Zeebrugge (including the Western part, area around the harbour breakwaters, Baai van Heist, the beaches of Knokke and the Appelzak gully) can be reconstructed. But also before this extension some data are available, such that the difference pre and post extension can be compared.

    Other data and literature are also described, including numerical modelling of currents and morphology, detailed hydrodynamic and sediment transport measuring campaigns and analysis of the sediment composition.

    In front of Knokke-Heist the beaches are eroding due to the presence of the Appelzak-gully. The Appelzak shows a long term landward movement. However the movement and development of the gully seems to slow down during the last 10 years. Although confirmation is needed (both based on further trend analysis and numerical modelling), this might suggest that big scale measures to reduce erosion, might be less effective Possibilities for the slow down are the more equilibrium state of the system after the extension of the harbour of Zeebrugge and the influence of the large nourishments in the last decade .

    Consequently, also the erosion in front of Knokke-Heist is clearly slowing down during the last decade.


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