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Kaji, A.O. (author)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...master thesis 2013
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Wengrove, M.E. (author), Henriquez, M. (author), De Schipper, M.A. (author), Holman, R. (author), Stive, M.J.F. (author)The Sand Engine is a mega-nourishment constructed in 2011 with the purpose of replenishing the surrounding southern Dutch coast by exploiting the strength of local alongshore currents for the next 20 years. Long term monitoring of the Sand Engine depends upon remote sensing coupled with in-situ measurements due to both its large spatial and...conference paper 2013
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Huisman, B.J.A. (author), Van Thiel De Vries, J.S.M. (author), Walstra, D.J.R. (author), Roelvink, J.A. (author), Ranasinghe, R.W.M.R.J.B. (author), Stive, M.J.F. (author)Understanding of the behaviour of coastline perturbations at soft-coastlines is essential for modelling coastal evolution at decadal time scales. Many coastline models do, for example, implicitly assume dominant diffusive behaviour of coastline features. The validity of this assumption is investigated for the Dutch coast on the basis of data on...conference paper 2013
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De Schipper, M.A. (author), De Vries, S. (author), Ranasinghe, R.W.M.R.J.B. (author), Reniers, A. (author), Stive, M.J.F. (author)The present paper examines the generation and inter-annual evolution of alongshore variability in topography measured after the implementation of a sand nourishment. The magnitude of the topographic variability is quantified using 3.5 years of monthly survey data. The emergence and temporal change in alongshore morphological variability is...conference paper 2013
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Stive, M.J.F. (author), De Schipper, M.A. (author), Luijendijk, A.P. (author), Ranasinghe, R.W.M.R.J.B. (author), Van Thiel De Vries, J.S.M. (author), Aarninkhof, S. (author), Van Gelder-Maas, C. (author), De Vries, S. (author), Henriquez, M. (author), Marx, S. (author)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...conference paper 2013
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Notenboom, P.D. (author)The goal of a sediment tracer is to give quantitative or relative feedback on (coastal) morphological changes or track either sediment or other particles (e.g. contaminations) in sediment dynamic environments. A sediment tracer is a visible or invisible marked (sediment) grain that is artificially injected or is present in-situ. This Master...master thesis 2013
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Suzuki, T. (author), Verwaest, T. (author), Veale, W. (author), Trouw, K. (author), Zijlema, M. (author)In this paper, the effect of beach nourishment on wave overtopping in shallow foreshores is investigated with the nonhydrostatic wave-flow model SWASH. Firstly, the applicability of SWASH to model wave overtopping is tested by comparing results with a physical model setup with different storm wall heights on top of an impermeable sea dike. The...conference paper 2012
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De Sonneville, B. (author), Van der Spek, A.J.F. (author)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)....conference paper 2012
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Hoekstra, R. (author), Walstra, D.J.R. (author), Swinkels, C.S. (author)In October and November 2009 a pilot project has been executed at the Delfland Coast in the Netherlands, constructing three small sandy headlands called Sand Groynes. Sand Groynes are nourished from the shore in seaward direction and anticipated to redistribute in the alongshore due to the impact of waves and currents to create the sediment...conference paper 2012
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de Zeeuw, R.C. (author), de Schipper, M.A. (author), Roelvink, D. (author), de Vries, S. (author), Stive, M.J.F. (author)Assessing swimmer safety along the Dutch coast entails more than only assessing the risk of rip currents. Seven criteria have been formulated to make a comprehensive assessment of swimmer safety along the Dutch coast. These are based on interviews with lifeguards, rescue report statistics and detailed lagrangian measurements of the current...conference paper 2012
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Aarninkhof, S.G.J. (author), Allewijn, R. (author), Kleij, A.M. (author), Stive, M.J.F. (author), Baptist, M.J. (author)With 80% of the world's population living in lowland urban areas by 2050, sea levels gradually rising and societal demands on the quality of living increasing, sustainable development of coastal zones becomes increasingly urgent as well as complex. Modern strategies for the design and implementation of measures for infrastructure development,...conference paper 2012
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Muller, M.C. (author), Roelvink, D. (author), Luijendijk, A.P. (author), De Vries, S. (author), Van Thiel de Vries, J.S.M. (author)In this paper, the aeolian transport model DUNE (Sauermann et al., 2001, Kroy et al., 2002) that describes important features and dynamics of typical desert dunes, is extended such that it can be applied in sandy coastal areas. Initial tests explore the limitations of the model in coastal areas after which adaptations are proposed and...conference paper 2012
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Acehte, F. (author), Luijendijk, A.P. (author)This paper discusses the effectiveness of a mega-nourishment project. Mega-nourishment is a new technology for beach nourishment that has recently been developed. It arises as an alternative to beaches where a structural erosion problem is observed and there is the need for continuously nourishments works. A pilot project was implemented near...conference paper 2012
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De Graaf, L. (author)After extensive flooding in 1953, Deltaworks were constructed to protect the Southwest delta in the Netherlands. In the Eastern Scheldt the connection to the North Sea was regulated by an open storm surge barrier and two compartment dams. These decreased the tidal volume and consequently tidal flats are eroding and disappear under water. The...master thesis 2012
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Giardino, A. (author), Santinelli, G. (author), Bruens, A. (author)Over more than a thousand years, the Dutch coast has been eroding for large stretches. Coastal retreat puts coastal functions (e.g. safety against flooding) under pressure. Since 1990, the Dutch policy aims at preventing further retreat of the coastline, but in the meantime taking the valuable dynamical behaviour of the coast into account....report 2012
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Pekkeriet, T. (author)In 2003, a first proposal for identification of seaward development, preliminary in combination with residential building, was presented in the Chamber of Deputies and within the States-Provincial (South-Holland), by respectively Geluk and Waterman. In response to this proposition, the ministry started an investigation, but concluded there was...master thesis 2011
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Kibrit, B. (author), Imambaks, R. (author), Anijs, M. (author), Tarigheh, A.S. (author), Mungar, S. (author)Over the past decades the north-eastern coast of Brazil has been degrading due to erosion. This degradation has both natural- and men-made causes. Brazil has no specific laws and acts which relate to coastal protection and management up to this date. Beaches in the metropolitan area of Recife show variety in beach width according to the seasons....student report 2011
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Bronsvoort, K. (author), Radermacher, M. (author), Van der Spek, B.J. (author), Spruit, R. (author), Van Tongeren, B. (author)The Durban bight has a very dynamic and variable coastline which is constantly under attack by the Indian Ocean. To protect the Durban harbour from this energetic ocean, already in 1855 breakwaters have been constructed to protect the harbour and prevent sedimentation inside. The construction of these breakwaters and eventually extending these...student report 2011
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Pot, R. (author)The safety of a large part of the Netherlands is dependent on the safety level of our flood protections. The height and volume of the dunes and the near shore zone influence this safety level. Robust dunes have provided natural safety against the sea for centuries. In the last centuries, structural erosion of the coastline and the increase of...master thesis 2011
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Walstra, D.J.R. (author), Hoyng, C.W. (author), Tonnon, P.K. (author), Van Rijn, L.C. (author)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...conference paper 2011