Print Email Facebook Twitter Sandy beaches in low-energy, non-tidal environments Title Sandy beaches in low-energy, non-tidal environments: Linking morphological development to hydrodynamic forcing Author Ton, A.M. (TU Delft Coastal Engineering) Vuik, V. (TU Delft Coastal Engineering; HKV Lijn in Water) Aarninkhof, S.G.J. (TU Delft Hydraulic Engineering) Department Hydraulic Engineering Date 2021 Abstract The morphodynamic behaviour of low-energy beaches is poorly understood, compared to that of exposed coasts. This study analyses the morphological development of sandy, low-energy beaches and the steering hydrodynamic processes. Four densely-monitored study sites in the non-tidal lake Markermeer in the Netherlands offered a unique opportunity to examine the relation between their hydraulic boundary conditions and morphodynamics. Regular bathymetric surveys were executed at all locations. Furthermore, the wave climate was monitored at one of these four sites. All four sites exhibit a commonly found low-energy beach morphology, with a narrow beach face and a low-gradient, subaqueous platform. This platform reaches an equilibrium depth quickly and then stays relatively stable. The stable elevation of the platform is located near Hallermeier's depth of closure. A sediment budget analysis over time demonstrates that the beach faces at all study sites have eroded during more energetic periods, and sediment accumulated offshore. During the monitoring periods of 2 to 4 years, the elevation of the platforms reached an equilibrium, but other morphological dimensions are still developing. The new insights gained from this study enable the prediction of platform elevations along sandy beaches in low-energy, non-tidal environments, and have contributed to our insight in the underlying processes driving the morphological evolution. Subject Depth of closureLow-energyMorphodynamicsSandy lake beach To reference this document use: http://resolver.tudelft.nl/uuid:3f9b4777-99fb-488e-a42d-cd8db2a25ff3 DOI https://doi.org/10.1016/j.geomorph.2020.107522 ISSN 0169-555X Source Geomorphology, 374, 1-11 Part of collection Institutional Repository Document type journal article Rights © 2021 A.M. Ton, V. Vuik, S.G.J. Aarninkhof Files PDF 1_s2.0_S0169555X20304955_main.pdf 2.71 MB Close viewer /islandora/object/uuid:3f9b4777-99fb-488e-a42d-cd8db2a25ff3/datastream/OBJ/view