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In January 2007 a period of high-energetic wave climates and elevated water levels caused local acute erosion to some of the profiles while others experienced no erosion. The results of these investigations are shown in a technical note there can be found under Filer.ĬSI and morphological changes were analyzed from 8 pre- and post-storm coastal profiles.
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This project under Building with Nature focuses on acute dune erosion at Skodbjerge and has investigated how this correlated with CSI by the use of the numerical model MIKE 21 IG. Simulation results showed overestimated dune erosion, which was explained by the lack of longshore sediment transport in the simulations. This correlation was further investigated by numerical modeling of acute dune erosion at Skodbjerge in a 1D model – X-Beach. However, the study showed a correlation between the nearshore bar morphology and dune erosion. This erosion event is investigated through a morphological analysis of good profile data before and after the storm period and by numerical modelling of acute erosion with the MIKE 21 IG model.ĭCA investigated acute dune erosion along the Danish North Sea coast for the period 1977 to 2011 where an applicable explanation was not found. Significant acute erosion occurred to the coastal dunes at Skodbjerge in January 2007. These natural barriers are often exposed to storm conditions where a combination of high wave energy and elevated water levels are capable of producing acute erosion of the dune system. The aim of this project is to test and use the new MIKE 21 IG model to quantify the dune-strength against acute erosion and see how this correlates with coastal state indicators (CSI).Ĭoastal dunes are natural barriers protecting the hinterland from erosion and flooding under extreme events like storms.