Developing a long-term management strategy to prepare the Dutch coast for the future, editorial of the VSI future Dutch coast

Modelling of annual sand transports at the Dutch lower shoreface

Dutch coastal policy aims for a safe, economically strong and attractive coast. This is achieved by maintaining the part of the coast that support these functions; the coastal foundation. The coastal foundation is maintained by means of sand nourishments. Up to now, it has been assumed that net transports across the coastal foundation's...

Dutch experience with sand nourishments for dynamic coastline conservation – An operational overview

The Dutch coast is one of the most heavily nourished coasts globally. An average of 12 mln. m3 is annually added to the coastline of only 432 km for dynamic coastline conservation. This study provides an overview of the operational aspects of the more than 300 nourishments for coastline maintenance that have been performed since the 1990s and...

Comparing grab and dredge sampling for shoreface benthos using ten years of monitoring data from the Sand Motor mega nourishment

Epifauna and infauna are often sampled by different types of sampling devices including grabs, and dredges, depending on various factors such as local environmental conditions, research questions and available budget. Because grabs and dredges have a different species-specific selectivity, both methods could be complementary but for some...

Observations and modelling of shoreface nourishment behaviour

Shoreface nourishments are commonly applied for coastal maintenance, but their behaviour is not well understood. Bathymetric data of 19 shoreface nourishments located at alongshore uniform sections of the Dutch coast were therefore analyzed and used to validate an efficient method for predicting the erosion of shoreface nourishments. Data shows...

Near-Bottom Currents on the Middle Shoreface in the Presence of the Rhine River Plume

The South-Holland coast of the Netherlands undergoes the influence of the Rhine river plume released from the Rotterdam waterways. An experiment, STRAINS, was conducted to study the impact of the fresh water on the nearshore hydrodynamics and sand transport. As part of the experiment, an instrumented bottom frame measured the near-bed...

Near-bottom currents on the middle shoreface in the presence of the Rhine River plume

The South-Holland coast of the Netherlands undergoes the influence of the Rhine river plume released from the Rotterdam waterways. An experiment, STRAINS, was conducted to study the impact of the fresh water on the nearshore hydrodynamics and sand transport. As part of the experiment, an instrumented bottom frame measured the near-bed...

The sand engine: A solution for the Dutch Delta in the 21st century?

The Netherlands’ strategy to combat coastal erosion since 1990 has been through nourishment, initially as beach nourishments but more and more as shoreface nourishments. In the light of sea level rise projections the yearly nourishment magnitudes continue to increase. In view of this an innovative soft engineering intervention, comprising an...

The sand engine: A solution for vulnerable deltas in the 21st century?

The Netherlands’ strategy to combat coastal erosion since 1990 has been through nourishment, initially as beach nourishments but more and more as shoreface nourishments. In the light of sea level rise projections the yearly nourishment magnitudes continue to increase. In view of this an innovative soft engineering intervention, comprising an...

Sediment- and morphodynamics of shoreface nourishments along the North-Holland coast

The Dutch coastal maintenance policy which was implemented in 1990 aims at fighting structural erosion by nourishing sand. Initially, the beaches were nourished. The lifetime of these beach nourishments turned out to be relatively short (~2 yrs), especially at identified erosion ‘hotspots’ along the North-Holland coast (e.g. Egmond aan Zee)....

Experimental study investigating various shoreface nourishment designs

This experimental study focuses on the morphological development of a near-equilibrium profile on which to types of shoreface nourishments are placed. As previous studies have indicated that the efficiency of nourishments is mainly influenced by water depth in which they are constructed, two cross-shore locations are considered for an accretive...

Evaluatie van de uitgevoerde suppleties bij Egmond op basis van Argus video waarnemingen

Modelling rhythmic morphology in the surf zone

Coastal erosion is increasingly being prevented by the application of shoreface nourishments. Although they are applied successfully, their development and their impact on the coastal system is still difficult to predict. Especially the effects of shoreface nourishments on the already existing rhythmic bed forms in the surf zone are unknown. The...

Shoreface nourishment scenarios: Detailed morphodynamic simulations with Delft3D for various shoreface nourishment designs

Controls on shallow-marine stratigraphy; a process-response approach

This thesis is concerned with the interface between land and sea. The interaction of coastal evolution and the sedimentary record, in this case of a wave-dominated coastal system, over geological timescales (< 105 y) is investigated in relation to their forcing parameters such as relative sea-level change, sediment supply, and wave climate. The...

Behaviour-oriented models of shoreface evolution