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Assessing the storm vulnerability of the Belgian coastline
Reyns, J.; Vanpoucke, Ph.; Verwaest, T.; Van der Biest, K.; Vanderkimpen, P.; Peeters, P.; Vanneuville, W. (2008). Assessing the storm vulnerability of the Belgian coastline, in: NCK-Days 2008: book of abstracts, March, 2008. pp. 49
In: (2008). NCK-Days 2008: book of abstracts, March, 2008. Netherlands Centre for Coastal Research (NCK): Delft. 62 pp., more
Related to:
Reyns, J.; Vanpoucke, Ph.; Verwaest, T.; Van der Biest, K.; Vanderkimpen, P.; Peeters, P.; Vanneuville, W. (2008). Assessing the storm vulnerability of the Belgian coastline, in: Mees, J. et al. (Ed.) VLIZ Young Scientists' Day, Brugge, Belgium, 29 February 2008: book of abstracts. VLIZ Special Publication, 40: pp. 63, more

Available in  Authors 
Document type: Summary

Keywords
    Analysis
    Climatic changes
    Coastlines
    Damage
    Erosion
    Erosion > Coastal erosion > Beach erosion
    Flooding
    Forces (mechanics) > Loads (forces) > Wave forces
    Information systems > GIS
    Methodology
    Modelling
    Overtopping
    Risks
    Surges > Surface water waves > Storm surges
    Temporal variations > Long-term changes > Sea level changes
    Topographic features > Beach features > Dunes
    ANE, Belgium, Belgian Coast [Marine Regions]
    Marine

Authors  Top 
  • Reyns, J., more
  • Vanpoucke, Ph., more
  • Verwaest, T., more
  • Van der Biest, K., more
  • Vanderkimpen, P., more
  • Peeters, P., more
  • Vanneuville, W., more

Abstract
    Climate change is likely to induce increased sea level and storm frequency. As such, assessing the strength of the Belgian coastal defence infrastructure against natural hazards is of primordial importance to reduce inundation consequences to properties and nature. This study presents an integrated methodology to estimate damage risks from a hypothetical storm with a surge level of +8m TAW and a duration of 45 hours along the entire coastline. After translation of deep water hydrometeorological conditions to the nearshore, several failure modes of the defence infrastructure are modelled: beach and dune erasion, collapse of dikes due to wave impact and overtopping, and subsequent breach forming and flooding of the low-lying coastal plain. Attention was paid to the various model uncertainties. Damage of infrastructure, properties and human casualties are calculated using a raster-based GIS model. Multiplication of the results with a rate factor based on prognoses of the evolution of socio-economic parameters allows projection of the results to 2050. All this, in combination with a social cost benefit analysis, will provide a tool for supporting coastal zone management in Belgium in a quantitative way.

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