Impact of the Eastern Scheldt Storm Surge Barrier on the Morphodynamics of the Ebb-Tidal Delta: In relation to coastal management

Threatened by rising sea levels and other climate change induced hazards, there is an increased need for coastal flood protection, such as storm surge barriers. However, the construction of such barriers may lead to unwanted coastal changes. This thesis examines the effect of the Eastern Scheldt storm surge barrier on sediment pathways and the...

Hydrodynamic and morphodynamic response of Perkpolder after a managed realignment

A managed realignment is the landward relocation of a flood defence to re-establish tidal exchange on formerly reclaimed land. In a managed realignment, the newly formed intertidal area acts together with the realigned dike as a nature-based flood defence system. In this thesis, the focus is on the managed realignment of Perkpolder, a former...

Sediment bypassing at Ameland inlet: And the role of an ebb-tidal delta nourishment

A large part of the Dutch coast, the barrier islands in the Wadden Sea included, would be eroding if the deficit in the total sediment budget was not compensated for through nourishments. Ebb-tidal deltas have an important function within the coastal system that make them of interest for coastal defence as a source and transport path for sand to...

Determining the effects of a hydropower dam and climate change on salt intrusion in the Gambia estuary up to 2100

Due to climate change, temperatures are rising worldwide resulting in sea level rise, higher evaporation and possible changes in precipitation patterns. These effects of climate change influence salt intrusion, particularly by affecting the freshwater supply. In The Gambia also a planned hydropower dam and possibly future irrigation development...

On the behaviour of fine sediment in settling basins: Improving the understanding and prediction of return water quality assessments by a comparative modelling study

In this study, the behaviour of fine sediment in settlings basins has been investigated. The understanding and prediction of return water quality assessments is improved by a comparative modelling study. Settling basins are required to decrease the exhaust of fine sediment particles when dredging and reclaiming land. Fine sediment particles can...

Data assimilation: Application of a particle filter on bathymetry simulations by the morphological model Delft3D

Predictions of the morphology of coastal areas are used to make decisions on coastal defence and nature conservation. To predict this morphology, simulations made by morphological models are used. To base decisions on this morphology predictions, we want the uncertainties in these predictions to be small. The goal of this research is to get a...

Understanding coastal dynamics at an ebb-tidal delta in the Wadden Sea: A case study of Schiermonnikoog NW with Delft3D Flexible Mesh

Schiermonnikoog is a Dutch barrier island with wide beaches and dunes which are both of importance for recreation as for safety. However, after decades of coastal accretion, in the last years, a strong coastline retreat is observed at the island head in the northwest. In tidal inlets, various forcing conditions of tides, waves, winds and...

Sustainable alternative designs for the Tongzhou Bay Port: A design study at the potential of alternative reclamation configurations through a 'Building-with-Nature' approach, in preserving and creating valuable habitat based on two specialised coastal shorebird species at the Jiangsu coast

Over the last decades, the People’s Republic of China experience large economic development, which have led to severe shortages of usable land. To counteract this, the Chinese central government promoted the development of coastal provinces by reclaiming large sections of coastal zones. One of these regions is Nantong Binhai Park or Tongzhou Bay...

Set-Up of a Process-based Model to Investigate the Outer Weser Estuary Development: Long-term morphological modeling with Delft 3D to hindcast the genesis and development of channel - shoal patterns in the Outer Weser estuary

This graduation project investigates the main processes that are influencing the morphological development of the Outer Weser estuary by setting up a process-based model (Delft 3D) and applying it by means of simulating multiple scenarios, each driven by a different forcing. The aim of this project is to gain insight into the causes for the...

Impact of Tidal Energy Extraction in the Eastern Scheldt Storm Surge Barrier on Basin Hydrodynamics and Morphology

The Eastern Scheldt basin is protected by a semi-open storm surge barrier that was completed in 1986. In 2015 a set of five turbines was installed in one of the barrier openings as a pilot for tidal energy extraction. Due to the construction of the barrier, the average tidal range and velocities have significantly decreased throughout the basin...

Nourishment strategies for the Ameland Inlet

Sea level rise poses challenges to the tidal inlet systems of the Wadden Sea, including the barrier islands. If no measures are taken, the shorelines of the islands will retreat and the basins may drown. In the Ameland Inlet, the Boschplaat at the eastern tip of Ameland and Bornrif at the western tip of Terschelling are currently shrinking. <br/...