Wave energy dissipation due to posidonia oceanica in the Mediterranean Sea

Posidonia oceanica is a flexible subaquatic seagrass species that forms extensive meadows across the Mediterranean Sea. These are considered one of the most valuable ecosystems on Earth. This MSc. thesis examines the role of P. oceanica in protecting the coast from storm impacts. Prior studies are based on flume experiments that focused, almost...

Wave Attenuation by Global Coastal Salt Marsh Habitats

In this study, a numerical model (XBeach-vegetation) and statistical Bayesian Network (Netica) was developed for the simulation and quantification of wave attenuation for various combinations of global salt marsh characteristics and extreme hydraulic conditions. The purpose of this modeling effort was to test the ability of the numerical model...

Predicting Wave-Induced Flooding on Low-Lying Tropical Islands Using a Bayesian Network

Low-lying tropical islands are highly vulnerable to the effects of sea-level rise and climate change. Most pressing is the threat posed to their fresh water supplies by wave-induced flooding. This thesis attempts to generalize previous site-specific studies of flooding on coral atolls and apply it in a framework that can be used for early...

Interaction between wave hydrodynamics and flexible vegetation

Aquatic vegetation attenuates local currents, dampens wave energy and promotes sedimentation. Its function as shoreline defence has gained strong interest in the recent years, since it may offer sustainable and cost-effective solutions to coastal protection problems. Predictions of wave dissipation by macrophytes require understanding of the...

Post-Nourishment Beach Scarp Existence at the Sand Engine

A survey dataset taken at the Sand Engine mega-nourishment on the southwest coast of Holland was analyzed in an attempt to locate beach scarps and characterize their development. A beach scarp is defined as a vertical discontinuity in the upper foreshore slope generated through the removal of sediment by natural processes. More specifically,...

Numerical modelling of wave agitation in ports and access channels: a comparison study between SWASH and MIKE 21bw.

The determination of wave penetration in ports is of great importance for the design of coastal structures and for the efficiency of port operations. Nowadays, coastal engineers can make use of numerical models for the assessment of wave climates in ports. Various numerical models exist, including the phase resolving models SWASH (TU Delft) and...

Scheveningen Harbour Project

The Hague Municipality, which is responsible for Scheveningen Harbour, is seeking solutions for two problems it is currently facing: reorganization/expansion of Scheveningen Harbour considering the shortage of marina places and the future demands; and connection of the north and south sides of the harbour, namely, bridging De Pijp. CoMEM TU...

Capaciteitsanalyse van de Prinses Margrietsluis in Lemmer

Dit rapport geeft een capaciteitsanalyse van de Prinses Margrietsluis in Lemmer (Friesland). De sluis met één kolk geeft toegang tot het Prinses Margrietkanaal / de Hoofdvaarweg Lemmer-Delfzijl en vormt de op één na belangrijkste verbinding voor de recreatievaart tussen het IJsselmeer en de Friese Meren. Een relatief hoog aandeel van de 40.000...

Numerical analysis of wave transmission behind floating breakwaters

Floating breakwaters (FBs) have been widely used as an alternative solution to protect coastal sites especially small harbors and certain areas which are not suitable for rubble mound breakwaters. Floating breakwater cannot completely stop the incident wave action. Instead, it attenuates the wave action by partially transmitting, partially...

Effects of Seasonality on the Estimation of Environmental Extremes: A Study of Non-Homogeneous Methods for Estimating Environmental Extremes

Extreme value theory is commonly applied in ocean engineering to estimate extreme environmental conditions (e.g. wave height and wind speed). Extreme value models generally assume data are identically distributed and homogeneous in time. Because there are often different dominant generating mechanisms in different seasons, the sample...

Assessment of the variables influencing sediment transport at the Sand Motor

The objective of this thesis is to investigate the role of different hydrodynamic and morphological factors influencing sediment transport patterns at the Sand Motor in order to give insight in processes controlling the short-term sand bar morphodynamics and the long term development of the Sand Motor. The work presents an analysis of the...

An Analysis of Index-Linked Contract as a Solution to Shippers - Carriers Contractual Issues in Container Liner Trade

Containerization has emerged as the favourable method in ocean transport as it is able to transport cargoes worldwide with low cost. Liner service is the concept which develops as the concept that provides scheduled transport service. At the latter development, it also provides intermodal service which combine ocean and inland transportation....

Numerical Modelling of Coastal Erosion using MIKE21

The purpose of this research is to model coastal erosion at a site on the Ural coast of the Baydara Bay, Russia. The research carried out in this thesis, aims to create a model to represent the hydrodynamics and sediment transport patterns prevalent at the site, using MIKE21 developed by DHI. The model is calibrated using the available data. The...

A study of morphological changes within managed realignment sites along the Humber Estuary (UK)

Managed realignment involves the deliberate breaching of engineered defences to allow landward coastal migration whilst at the same time creating intertidal marshes and mudflats. Over the last two decades, this practice has become more common; however, the monitoring of realignment schemes is relatively limited and morphological changes are...

Long-term morphological model of Poole Harbour

The study focuses on the impact of human interventions on the natural behaviour of estuaries in response to sea-level rise. In particular it focuses on the affect of managed realignment on the critical sea level rise (SLRcrit) for the Poole Harbour. Numerical model ASMITA (Aggregated Scale Morphological Interaction between a Tidal inlet and the...