Extreme value modeling of wind effect on dune erosion on the Coast of ̈Angelholm

Abstract: The movement of the coast line, due to erosion in one direction or aggregation in theother is a natural process as waves, wind as well as the geological nature of the coast itselfare affecting it. Sand dunes are the main protection coasts have at their disposal againstfloods during storm surges or from more passive but long range rainfalls. As many of the coastal areas have a dense population and it also shows a great biodi-versity, the dune erosion is a phenomenon worth investigating since it is the destructionof such protection which is vital for everything living close-by. The cost of a flood can be measured by human loss, landscape damage or construction loss. Most of the buildings arenot suited for floods. Studying the dune erosion by itself might not be enough to provide good advice in caseof a surge since the erosion is an effect of the surge as much as it then increases the fol-lowing risks of flooding. In order to be well prepared and build efficient methods againstsuch flooding, it is necessary to better understand the dune erosion and the surroundingphenomenon, such as the sea-level rise, the wave runups or the wind speed.The data taken for this study comes mostly from the SMHI (Swedish Meteorological andHyrological Institute), taken on or nearby the shore of ̈Angelholm in Sk ̊ane, south-west ofSweden.