Depth of closure in the multi-bar non-tidal nearshore zone of the Baltic Sea: Lubiatowo (Poland) case study

Abstract

The paper deals with the natural sandy nearshore zone, located close to Lubiatowo in Poland (the south Baltic Sea). The study site is characterised by multi-bar sea bottom profile, intensively dissipating wave energy. The paper presents a verification ofthe depth of closure concept. The analysis and theoretical considerations are based on field data collected at the IBW PAN Coastal Research Station in Lubiatowo. The data comprises cross-shore bathymetric profiles and the deep-water wave buoy records. The depth of closure determined from bathymetric surveys was found to be bigger than the one calculated using parameters of the effective significant wave height.