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A coastline perturbation caused by natural feeding from a shoreface-connected ridge (Headland Sint-André, Belgium)
Verwaest, T.; Houthuys, R.; Roest, B.; Dan, S.; Montreuil, A.-L. (2020). A coastline perturbation caused by natural feeding from a shoreface-connected ridge (Headland Sint-André, Belgium). J. Coast. Res. 95(SI): 701-705. https://dx.doi.org/10.2112/si95-136.1
In: Journal of Coastal Research. Coastal Education and Research Foundation: Fort Lauderdale. ISSN 0749-0208; e-ISSN 1551-5036
Peer reviewed article  
Available in  Authors 
Keywords
    Coastal protection > Coastal protection against erosion > Morphodynamics soft coastal defences
    Literature and desktop study
    Numerical modelling
    Marine/Coastal
Author keywords
    Littoral drift; Active zone; Coastal resilience; Climate change
Authors  Top 
  • Verwaest, T., more
  • Houthuys, R.
  • Roest, B.
  • Dan, S.
  • Montreuil, A.-L.
Abstract
    This paper explains how a local seaward perturbation, headland Sint-André, in the straight sandy coastline of Belgium can persist for centuries. The diffusive longshore transport gradients on the beach are counterbalanced by a sediment supply from off-shore via a shoreface-connected ridge. A UNIBEST-CL+ 1D coastline model is set up to describe the genesis of this coastline feature. From the size and shape of the perturbation and taking into account the diffusivity caused by the longshore transport gradients, the average sand supply from off-shore is estimated to be 55,000 m3/year and it is hindcasted that the connection of the ridge to the coastline occurred between 300 and 400 years ago.
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