Extreme value analysis of wave runup and dune erosion at Ängelholm beach, south Sweden / Extremvärdesanalys av våguppspolning och dynerosion vid Ängelholms strand
This study employs extreme value analysis to estimate 10-, 50-, and 100-year return levels of wave runup and annual dune erosion on the basis of 40 years simulated data from Angelholm Beach, Sweden. The offshore wave climate is computed with the SMB-formulations and propagated nearshore with the SWAN wave model. The runup is computed with a Hunt-type equation and the erosion with an impact formula. The results show that the dune crest elevation is in general higher than the most extreme runup. The volume of sediment in the dunes is sufficient to protect the developed hinterland in the short-term perspective; however, long-term effects due to sea level rise and gradients in longshore sediment transport are not considered and may change this conclusion.