The influence of a tidal inlet system on a nearby mega-feeder nourishment

All over the world coastal communities are at risk due to sea-level rise and intensifying weather conditions. Many sandy beaches are eroding as a result of human-induced factors. Currently, the preferred coastal protection measure in the United States are beach nourishments. In Europe, there also is a general shift from hard to soft coastal...

Stability of the first row of an XblocPlus armour layer: A physical model study using Digital Displacement Analysis

XblocPlus is a new uniformly placed single layer armour unit, developed by Delta Marine Consultants (BAM Infraconsult). This report focuses on the stability of the first row of armour units, as this row is interlocked less than other rows. When the first row starts to slide, this is a big threat to the stability of the entire armour layer....

Prediction of the closure of an artificial lagoon at the Dutch Coast: A case study on the lagoon at the Hondsbossche Dunes

To protect the coastal system, nourishment of the coast is nowadays being applied more frequently. Within these coastal systems new elements are often implemented to add value to the design without compromising on the function of the design of the nourishment. One of these possible purposes is the creation of an artificial lagoon. However, to be...

Predicting the dune growth at a mega nourishment: By using a process based Integrated Hydro- Aeolian- Morphodynamic model.

The Sand Engine was constructed in 2011 with the main goal to enhance the natural dune growth. It is the first mega nourishment in the world comprising of 21.5 Mm³ of sediment. There is a large difference between the predictions of the dune growth (25 ha in 20 years) and the actual measurements (1 ha in 4 years). Therefore a more...

Evaluating the applicability of 2DH models for the prediction of mega nourishments: A case study of the Hondsbossche Dunes

In 2003 certain areas of the Dutch coast were found not to meet contemporary safety standards, as a result of erosion that occurred over the last century. One of these 'weak links' stretches from Camperduin to Petten and is known as the Hondsebossche Pettemer Zeewering; a former 'hard' sea dyke with a stone revetment. To fortify this 12...

Global Flood Hazard Reduction by Foreshore Vegetation

Global flood exposure simulations show that about 600 million people, of which 320 million in urban areas, are at risk to the impacts of global sea-level rise and changing storm intensity and frequency. Increasing availability of data and computational efficiency enables to assess flood hazard on a global scale. Implementation of salt marshes...

The Influence of Diffraction on Artificial Pocket Beaches: a Morphological Assessment with XBeach

Information about the hydrodynamic, sediment transport and morphodynamics is limited in pocket beaches (Dehouck et al., 2009). However, a good understanding is necessary for effective management of coastal areas (Scholar et al., 1998). A small artificial pocket beach has relatively large shadow zones, therefore, diffraction might be an important...

Physical modelling of reflection on gentle coasts: Comparing methods to analyse long waves and optimising the lay-out for a wave absorber to minimise reflection in a wave flume

Studying mangroves in the field can be very difficult; therefore it is in some situations better to model in a flume. The question is, to what extend are the situation in the field and the situation in the flume comparable with each other? This study focusses on reflection in the wave flume. Wave energy in a flume can be damped by placing a wave...

‘Building with Nature’-type oplossingen voor waterveiligheidsproblematiek IJburg-Amsterdam

Om aan de woningvraag te voldoen werd in 2000 de bouw van eilandengroep IJburg gestart in het IJmeer-Markermeer. IJburg bestaat uit twee fases die achtereenvolgend aan elkaar zouden worden aangelegd. In 2002 betrokken de eerste bewoners hun huizen op de eerste fase van IJburg. Momenteel is het laatste eiland van fase 1 nog onbebouwd en is...

Automatic Quantification of Beach Occupation Using Oversegmentation and Machine Learning

Decision- and policymakers responsible for the coastal zone aim at combining measures against for instance long-term erosion, with measures that have a positive social, economic impact on the region. Recreational beach usage has a large social economic impact on a region and therefore quantification of the recreational beach usage can provide...

Flow patterns in partially vegetated channels: Combining physical experiments and numerical modelling

As coastal wetland ecosystems, thriving at the interface between land and water,<br/>mangroves can benefit us in lots of ways: providing food and timber, purifying water and sequestrating carbon, protecting coastal area through wave attenuation and coastal stabilization. Regarding the protection of coastal area, mangroves damp the flow in short...

Engineering design guidelines for salt marsh development: Focused on the effect of grazing strategies on the coastal protection property

The main objective and secondary objective, which corresponds to the in-depth research are as follows:<br/><br/>(1) To develop guidelines for engineers to include salt marshes in hydraulic infrastructure projects, subject to the Building with Nature philosophy.<br/>(2) To investigate the effect of grazing at salt marshes on the coastal...