![]() could be used as interpretation of the hydrodynamical and morphodynamical behaviour in tidal inlets during storm surges. These results could be used in management strategies to create a more stable or even expanding barrier island. Higher water levels had almost no effect on both the hydrodynamic as morphodynamical processes in the inlet as they were found to be dominated by (indirectly) wave breaking on the west side of the sand flat. Water level gradient between both sides of the inlet had significant influence in the current magnitude and erosion values in/near the channel of the inlet. The rest of the eroded material is transported southwards where it settles behind the southern tip of the sandflat, where the current magnitude decreases significantly. The eroded material is partly transported on top of the Hors, where it settles as the water depth increases and the flow velocity decreases. The water level gradient, created by the wave-set up, results in a constant flow across the Hors from west to east.Įrosion, caused by the dissipated energy, is observed on the west coastline of the sandflat. The reduction results in an increase of the water level on the west side of the sandflat. Results show that most wave energy is dissipated before reaching the dunes, thus leading to a decrease in the radiation stress. The choice to use this particular inlet is made because of the availability of the necessary data which was essential to run and qualitatively validate the model. On the north side of the inlet, a large sandflat (‘the Hors’) is located. XBeach, a numerical model which is developed for simulating extreme storm surges in complex situations like a tidal inlet system, is used to make a simulation of various storm surges in the Marsdiep inlet (NL). Thus, we aim at understanding how storm characteristics influence on coastal dune erosion and sedimentation on systems near tidal inlets. The goal of this research is to understand the behaviour of storm surge processes on a coastal dune system near a tidal inlet system. Still, there is a gap in the accurate prediction of storm-induced coastal change on coastal dune systems near tidal inlets. ![]() A lot of research has been done on the effects of storms on straight (uniform) coasts. Extreme storm surges are capable of eroding or even breaching dunes. The effects of storm surges on dune systems near inlets : A case-study for the Marsdiep inlet near Texel.ĭuring storm surges, the water level and wave height increase which results in erosion of the dunes.
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