Erosion processes in a dune landscape along the Dutch coast

摘要: Abstract The landscape of the dunes along Dutch coast is result interaction biological and geomorphological processes. Where latter prevail, new landforms are created: blowouts by wind erosion, rills accumulation footslopes overland flow. Spatial extent rate erosion processes have been assessed mapping measuring. It appears that dune sand either sensitive to wind, or water, depending on presence organic material. Clean (yellow) cohesionless easily blown away, but has no surface runoff. Grey containing matter other hand will resist it waterrepellent be washed from slopes when rain follows a period dry weather. Once grey removed surfaces water begins in underlying yellow sand. Present-day reshape original parabolic dunes.Wind particularly active summit areas where formed, whereasoverland flow creates concave south-exposed slopes. stepped north-exposed due mass movements following rabbit activity.