Morphological modelling of the Atrato river delta in Colombia

The Colombian government aims to establish a connection that bridges the Atlantic Ocean and the Pacific Ocean. The new connection will largely take place on the current Atrato River, which has not yet been upgraded for a more extensive use of navigation in the near future. A bottleneck in the river is the delta area. Without structural dredging...

Modeling the Evolution of the Wax Lake Delta in Atchafalaya Bay, Louisiana

In this study, a process-based, depth-averaged Delft3D hydrodynamic and morphologic model of the Wax Lake Delta in Atchafalaya Bay, Louisiana was developed to simulate a five year period of delta development. The purpose of this modeling effort was to test the ability of process-based modeling tools to successfully simulate typical delta...

Climate change impacts on mixing anc circulation at Songkhla Lagoon, Thailand

Coastal lagoons are shallow coastal water bodies separated from the ocean by a barrier and they support a range of natural services that are highly valued by society, including but not limited to fisheries productivity, storm protection, and tourism. Songkhla lagoon is the largest lagoonal water resource in Thailand and Southeast Asia. The...

Morphodynamic analysis Ecobeach project

The Ecobeach project is a newly invented method to defend the coast against erosion. Ecobeach is a coastal defense system based on the principle of passively draining the beach. This Thesis looks into possible morphological changes induced by the Ecobeach test at Egmond aan Zee performed by Rijkswaterstaat and BAM.

Morphological modelling of Lai Giang Inlet, Vietnam.

The Lai Giang inlet located in Binh Dinh province incorporates various features of the estuaries in the Central part of Vietnam. Belonging to the micro-tidal and wave-dominant coast and influenced by the monsoon regime, the inlet has a seasonal character. During the dry season, as the river flow diminishes, the wave action causes high level of...

Morphology of the Eastern Scheldt ebb tidal delta

The Eastern Scheldt tidal basin and its ebb tidal delta have changed drastically in the recent centuries under the influence of natural processes and human interventions. A Storm Surge Barrier, one of constructions within framework of Delta Project in the Eastern Scheldt, is considered as the largest impact to changes in hydrodynamics and...

Dune growth on natural and nourished beaches

Dune evolution on natural and nourished beaches on an engineering timescale is not well understood. Using a study of both literature, and data which has been gathered of the Dutch coast, a new hypothesis regarding the causes of variability in dune evolution is proposed. Following this hypothesis assumptions are made on the basis of which a...

Wave reworking of a delta: Process-based modelling of sediment reworking under wave conditions in the deltaic environment

A process-based numerical model was applied to investigate wave reworking in the deltaic environment. The two main objectives were (1) to develop this model and (2) consequently apply it to study the effects of wave reworking on the morphology and stratigraphy of a delta. A depth-average Delft3D model with two sediment fractions (fine silt and...

Morphological impact of a deep water reef

For local protection of coastal stretches where buildings are situated in or form part of the coastal defense line the deep water reef concept has been developed. Two reef concepts were designed; a shore-parallel breakwater (of 3 km length) and a segmented breakwater (three blinds of 1 km length), both located in 10 m water depth at 1.5 km off...