Impact of the depth-to-width ratio of periodically stratified tidal channels on the estuarine circulation

The dependency of the estuarine circulation on the depth-to-width ratio of a periodically, weakly stratified tidal estuary is systematically investigated here for the first time. Currents, salinity, and other properties are simulated by means of the General Estuarine Transport Model (GETM) in cross-sectional slice mode, applying a symmetric...

Field Observations of Surf Zone-Inner Shelf Exchange on a Rip-Channeled Beach

Cross-shore exchange between the surf zone and the inner shelf is investigated using Lagrangian and Eulerian field measurements of rip current flows on a rip-channeled beach in Sand City, California. Surface drifters released on the inner shelf during weak wind conditions moved seaward due to rip current pulses and then returned shoreward in an...

Alongshore variability of nourished and natural beaches

Alongshore variability in topography (i.e. height differences in bed level along the coast) can exist on both natural and nourished beaches. An important question prior to implementation of a nourishment project is how alongshore variability is going to evolve and, related to this variability, the effect of the project upon swimmer safety. In...

Advection of the salt wedge and evolution of the internal flow structure in the Rotterdam Waterway

An analysis of field measurements recorded over a tidal cycle in the Rotterdam Waterway is presented. These measurements are the first to elucidate the processes influencing the along-channel current structure and the excursion of the salt wedge in this estuary. The salt wedge structure remained stable throughout the measuring period. The...

Process-based and Surrogate Modelling of Fine Sediment Transport in the Dutch Coastal Zone

Coastal zones which are known as the interface between continents and oceans are vital and important to human beings because a majority of the world's population live in such zones (Nelson, 2007). Coastal systems are among the most dynamic and energetic environments on earth and they are continuously changing because of the dynamic interaction...

Large scale physical model tests on the stability of geocontainers

Within the framework of the workpackage 4c: “Flexible coastal defence with geosystems”, which is part of the workpackage 4: “Morfodynamics of the North Sea and coast” several problems are formulated with respect to the application and design of Geosystems. This is performed within the Delft Cluster project “Sustainable development of North sea...