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This dissertation qualitatively investigates the morphodynamic response of a large inlet system to IPCC projected relative sea level rise (RSLR). Adopted numerical approach (Delft3D) used a highly schematised model domain analogous to the Ameland inlet in the Dutch Wadden Sea. Predicted inlet evolution indicated the typical channel/shoal pattern of the Ameland inlet and an agreement with the empirical-equilibrium relations. RSLR enhances the existing flood-dominance of the system leading to erosion on the ebb-tidal delta and accretion in the basin. Tidal flat evolution was quite stable applying low RSLR whereas the system indicated turning into a lagoon under high RSLR. Nourishment application hardly enabled the RSLR induced sediment demand of tidal flat evolution.

This dissertation presents a potential way forward for adaptation to climate change, termed the resilience approach. This approach takes a dynamic perspective on adaptive processes and the effects of these processes at/across different spatio-temporal scales. Experience is provided with four methods that can be used to apply the resilience approach: Adaptive Policy Making, Real-In-Options, Adaptation Tipping Points and - Adaptation Mainstreaming Opportunities. This dissertation discusses the concept, procedure and benefits/limitations of each method, examining its usefulness for informing investment decisions for flood risk management. It also gives specific recommendations on which method to use under what circumstances.