Gedaan met laden. U bevindt zich op: MOZES – Research on the Morphological Interaction between the Sea bottom and the Belgian Coastline. Working year 3

MOZES – Research on the Morphological Interaction between the Sea bottom and the Belgian Coastline. Working year 3

Rapport 
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oktober 2025 
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Departement Mobiliteit en Openbare Werken. Waterbouwkundig Laboratorium
The MOZES project (MOrfolgische interactie kustnabije ZEebodem en Strand)) aims to improve understanding of coastal morphodynamics across time scales for better coastal management. Year 3 Progress Summary: WP1: • Continued vectorisation of historical topo-bathymetric maps (1970s–1990s). • Shoreface-connected ridges (sfcr) migrated up to 5 km east and several hundred metres landward over two centuries, mainly due to residual sediment transport and sea-level rise. • Tidal sand ridges (tsr) lost sediment; sfcr accreted slightly. • Dredging deprives downdrift sandbanks of sediment; Stroombank analysis estimates 300 m³/m/year longshore transport. WP2: • Coupled shelf-shoreline model replicates shoreline progradation near sfcr crests and retreat near channels; tsr have minor effects. • Morphodynamic model simulates simultaneous sfcr and tsr development under waves, wind, and tides, though with differences from observations. • Sfcr formation is shown to be independent of specific sediment transport formulations. WP3: • Scaldis-Coast and FlemCo models match observed wave heights and directions, but fail to fully capture tide-wave interaction in the Appelzak gully. • FlemCo overestimates offshore directional spreading; Scaldis underestimates nearshore, exaggerating NW wave peaks. WP4: • FlemCo reproduces beach and shoreface morphodynamics at Knokke-Heist, with increasing discrepancies offshore. • Scaldis-Coast captures erosion trends (1999–2003), but with spatial and magnitude deviations. • Both models need further calibration for detailed erosion studies.
Uitgever
Publicatiedatum
Oktober 2025
Publicatietype
Rapport
Thema's
Scheepvaart en havens
Auteur(s)
Dujardin, A., Houthuys, R., Nnafie, A., Röbke, B., Nguyen, D., de Bakker, A., de Swart, H.E., van der Werf, J., Huisman, B., De Maerschalck, B., Dan, S., Verwaest, T.
Reeks
FH reports 20_079_3