Searched for: subject:"nourishments"
(1 - 20 of 82)

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Huisman, B.J.A. (author)
Increasingly large sand nourishments are used for the maintenance of sandy coasts around the world. There is, however, still very limited understanding of their behaviour (i.e. redistribution) and effects on the marine environment. This PhD thesis explores the morphological reshaping of shoreface nourishments (i.e. long bunds of sand placed at...
doctoral thesis 2019
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Hoonhout, B.M. (author), de Vries, S. (author)
Mega nourishments are a novel approach to stimulating coastal safety and resilience. Mega nourishments are intended to spread along the coast on a decadal time scale by natural sediment transport processes with a minimum of intrusion into the natural coastal system. The supratidal morphodynamic behaviour of mega nourishments is not well...
journal article 2019
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de Vet, P.L.M. (author), Boersema, Matthijs (author), Bouma, T.J. (author), Nolte, A. J. (author), Schrijvershof, R. A. (author), Soissons, L. M. (author), Stronkhorst, J (author), van Zanten, E. (author), Ysebaert, Tom (author)
The Eastern Scheldt, a tidal basin in the southwest of The Netherlands, underwent large physical and ecological changes due to a system-wide human interference. The construction of a storm surge barrier at the seaward side and closure of the upstream branches in the 1980s resulted in intertidal flat erosion. This has far reaching consequences...
journal article 2019
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Huisman, B.J.A. (author), Walstra, Dirk Jan R. (author), Radermacher, Max (author), de Schipper, M.A. (author), Ruessink, B. Gerben (author)
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...
journal article 2019
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Luijendijk, A.P. (author), de Schipper, M.A. (author), Ranasinghe, Roshanka (author)
Thirty one percent (31%) of the world's coastline consists of sandy beaches and dunes that form a natural defense protecting the hinterland from flooding. A common measure to mitigate erosion along sandy beaches is the implementation of sand nourishments. The design and acceptance of such a mitigating measure require information on the expected...
journal article 2019
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Giardino, Alessio (author), Diamantidou, Eleni (author), Pearson, S.G. (author), Santinelli, Giorgio (author), den Heijer, C. (author)
This paper presents an application of the Bayesian belief network for coastal erosion management at the regional scale. A "Bayesian erosion management network" (BERM-N) is developed and trained based on yearly cross-shore profile data available along the Holland coast. Profiles collected for over 50 years and at 604 locations were combined...
journal article 2019
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Radermacher, M. (author)
Artificial sand nourishments are a common measure to mitigate coastal erosion problems. Such nourishments can have an impact on currents and waves near the beach, especially when the nourishment has a large size. As nourished beaches often have a recreational function, these altered wave and current patterns may pose a threat to swimmers. This...
doctoral thesis 2018
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Bontje, L.E. (author), Gomes, S.L. (author), Wang, Zilin (author), Slinger, J.H. (author)
Institutional work offers a promising lens for understanding institutional change, focusing on the efforts of actors in creating, maintaining or disrupting institutions. In this paper, we explore the capacity of a narrative approach to provide insights on institutional work, using a case study from the coast of Sweden. We identify four...
journal article 2018
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Radermacher, M. (author), de Schipper, M.A. (author), Price, Timothy (author), Huisman, B.J.A. (author), Aarninkhof, S.G.J. (author), Reniers, A.J.H.M. (author)
The behaviour of subtidal sandbars can be strongly influenced by the introduction of sand nourishments in the coastal system. This study focuses on the impact of nourishments on subtidal bar behaviour at spatio-temporal scales beyond a single nourishment project. It aims to determine the long-term behaviour of subtidal sandbars along an entire...
journal article 2018
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Huisman, B.J.A. (author), Ruessink, B. G. (author), de Schipper, M.A. (author), Luijendijk, A.P. (author), Stive, M.J.F. (author)
Large perturbations in the coastline, such as the 'Sand Motor' nourishment (∼21 million m<sup>3</sup>) at the Holland coast, can initiate considerable spatial and temporal changes in the median grain size (D<sub>50</sub>) of the sea bed on the lower shoreface. The relevance of hydrodynamic conditions for the development of the heterogeneity...
journal article 2018
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Tonnon, Pieter Koen (author), Huisman, B.J.A. (author), Stam, G. N. (author), van Rijn, L. C. (author)
Mega-nourishments, aiming at providing long-term coastal safety, nature qualities and recreational space, have been applied recently at the Holland coast and are considered at various other places in the world. Methods to quickly evaluate the potential and lifetime of these coastal mega nourishments are therefore very much desired, which is...
journal article 2018
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Hoonhout, B.M. (author), de Vries, S. (author)
Mega nourishments are intended to enhance growth and resilience of coastal dunes on medium to long time scales by stimulation of natural sediment transport processes. The growth and resilience of coastal dunes largely depends on the presence of a continuous supply of aeolian sediment. A recent example of a mega nourishment is the 21 Mm<sup>3<...
journal article 2017
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Vandebroek, Elena (author), Lindenbergh, R.C. (author), van Leijen, F.J. (author), de Schipper, M.A. (author), de Vries, S. (author), Hanssen, R.F. (author)
This paper presents a semi-automated approach to detecting coastal shoreline change with high spatial- and temporal-resolution using X-band synthetic aperture radar (SAR) data. The method was applied at the Sand Motor, a “mega-scale” beach nourishment project in the Netherlands. Natural processes, like waves, wind, and tides, gradually...
journal article 2017
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Hoonhout, B.M. (author), de Vries, S. (author)
Spatial variations in aeolian sediment transport were measured at the Sand Motor mega nourishment in The Netherlands during a six week field campaign in the fall of 2014. A consistent significant increase in sediment transport in downwind direction (positive gradient) was measured over the intertidal beach area, indicating that the intertidal...
journal article 2017
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Radermacher, M. (author), Geerlof, Wessel (author), de Schipper, M.A. (author), Huisman, B.J.A. (author), Aarninkhof, S.G.J. (author), Reniers, A.J.H.M. (author)
The presence of complex nearshore sand bar patterns (i.e. alongshore bathymetric variability) has an impact on local currents, affecting recreational safety and nearshore mixing processes. This study assesses the evolution of alongshore bathymetric variability along the Delfland coast in The Netherlands, over the first 5 years after construction...
conference paper 2017
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Luijendijk, A.P. (author), Hoonhout, B.M. (author), de Vries, S. (author), Ranasinghe, D. (author)
This study presents some recent developments in coastal morphological modeling focusing on flexible meshes, flexible coupling between models operating at different time scales, and a recently developed morphodynamic model for the intertidal and dry beach. This integrated modeling approach is applied to the Sand Engine mega nourishment in The...
conference paper 2017
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de Schipper, M.A. (author), Darnall, John (author), de Vries, S. (author), Reniers, A.J.H.M. (author)
Five years of beach topography data were examined to map the spatio-temporal patterns in beach scarp existence. Data of the Sand Engine were used, a mega scale nourishment implemented in 2011 at the Dutch coast. Topographic data were automatically and manually analyzed to recognize scarps in the dataset. Moments of destruction and persistence of...
conference paper 2017
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Huisman, B.J.A. (author), de Schipper, M.A. (author), Ruessink, B. G. (author)
Bed sediment composition, with a focus on the median grain size D<sub>50</sub>, was investigated at a large-scale nourishment (The ‘Sand Motor’) at the Dutch coast (∼21.5 million m<sup>3</sup> sand). Considerable alongshore heterogeneity of the bed composition (D<sub>50</sub>) was observed as the Sand Motor evolved over time with (1)...
journal article 2016
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Bontje, L.E. (author), Frederiksson, Caroline (author), Wang, Zilin (author), Slinger, J (author)
This paper discusses the dynamics of coastal policy change in Sweden, using erosion and beach nourishments as an example. The Multiple Stream Model is a theoretical model on agenda setting and policy change developed by the political scientist John Kingdon (1984, 2003). This paper applies Kingdon’s model in describing and explaining coastal...
journal article 2016
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Radermacher, M. (author), de Schipper, M.A. (author), Swinkels, Cilia M. (author), MacMahan, Jamie (author), Reniers, A.J.H.M. (author)
In recent years, the application of large-scale beach nourishments has been discussed, with the Sand Motor in the Netherlands as the first real-world example. Such protruding beach nourishments have an impact on tidal currents, potentially leading to tidal flow separation and the generation of tidal eddies of<br/>length scales larger than the...
journal article 2016
Searched for: subject:"nourishments"
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