Searched for: subject%3A%22groynes%22
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Broeders, Sander (author)
The port of Rotterdam is one of the most important ports in Western Europe and via the 'Nieuwe Waterweg' it provides maritime trading between the large hinterland and the rest of the world. To provide port access for the large vessels, the channel and port basins need to be dredged regularly. At the same time, in other locations, sediment is...
master thesis 2023
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van Batenburg, Tobias (author)
Groynes in the Lower Elbe estuary in Germany are subject to attack from overflowing long-period primary ship-induced waves. Damage can occur on the crest and lee side of the structure due to the high turbulent overflowing flow velocities. An actual design tool for groynes exposed to overflowing primary ship waves is not yet present. Therefore,...
master thesis 2023
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Langeveld, Bram (author)
Groynes are hydraulic structures commonly applied in the Dutch rivers. Depending on the water depth, groynes can be emerged or submerged. When a groyne is emerged, it has two main functions: maintaining the water depth in the main channel and preventing the river from eroding its bank. When the discharge in the river increases, the groynes...
master thesis 2023
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Kouwenhoven, Tors (author)
In the Nieuwe Waterweg an ongoing pilot takes place in one of the groyne areas. This pilot is a part of the “De Groene Poort” project. The idea for this project is to create intertidal areas by modifying and nourishing groyne areas. These artificially formed intertidal areas will create a new habitat for wildlife and attract different vegetation...
master thesis 2023
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Brouwers, Steven (author)
Due to river training in the past centuries, the bed level of the Waal started and is still decreasing by several centimetres a year. Erosion of the riverbed causes problems for objects underneath the riverbed like cables, pipelines and foundations of structures. Furthermore, some parts of the river are eroding at a higher velocity compared to...
master thesis 2022
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Grosfeld, Jakob (author)
Plastic pollution and accumulation in the riverine environment is of increasing concern. While most research focuses on microplastic contamination, the dynamics of macrolitter remain largely unknown. Large scale riverbank monitoring initiatives in the Netherlands reveal that macrolitter hotspots occur at several locations. Unfortunately, current...
master thesis 2022
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van Alderwegen, E. (author), Mosselman, E. (author), Zijlema, A. (author), Bahrami-Yarahmadi, M. (author), Reedijk, B (author)
conference paper 2022
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Ahrendt, S.M. (author), Blom, A. (author), van Denderen, R. Pepijn (author), Schielen, R.M.J. (author), Horner-Devine, Alexander (author)
conference paper 2022
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Alahmady, Gamal (author), Crosato, A. (author), Werner, Micha (author)
conference paper 2022
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van Alderwegen, Earvin (author)
Large-scale measures within the river programmes such as Room for the River, Natura2000 and Water Framework Directive have increased the biodiversity in Dutch rivers and have achieved a more natural landscape. However, recent river programmes have shown conflicts between safety against flooding and riverine nature rehabilitation with maintaining...
master thesis 2021
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Zhou, Z. (author)
Estuaries are partially enclosed water bodies where river water mixes with sea water. Estuaries provide important ecological functions which are strongly regulated by estuarine hydrodynamics and sediment dynamics, and also by human interventions. Sustainable management of such systems therefore requires a thorough understanding of the interplay...
doctoral thesis 2021
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Harms, Johan (author)
Currently multiple projects investigate the effect of lowering the crest of groynes in the Dutch rivers with the aim to lower the backwater effect of groynes under high water levels. There is a major uncertainty however in the modelling of groynes, and therefore in the prediction of the effect of groyne lowering. Currently submerged groynes are...
master thesis 2021
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Overgaauw, Tim (author)
While waves are propagating towards the shore and are interrupted by an obstacle like a groyne, they will turn around the tip into the sheltered region of the groyne. This sheltered region is called the shadow zone and contains a reduced wave climate. The turning of the waves is based on the lateral transfer of wave energy along the wave crest,...
master thesis 2021
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Pasman, R. (author), Schielen, R.M.J. (author), Bricker, J.D. (author), van der Hout, A.J. (author), Mosselman, E. (author), Uijttewaal, W.S.J. (author), Collas, Frank (author), Huthoff, Freek (author)
abstract 2021
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Zhou, Z. (author), Ge, Jianzhong (author), van Maren, D.S. (author), Wang, Zhengbing (author), Kuai, Y. (author), Ding, Pingxing (author)
Lateral flows redistribute sediment and influence the morphodynamics of channel-shoal systems. However, our understanding of lateral transport of suspended sediment during high and low water slack is still fairly limited, especially in engineered estuaries. Human interventions such as dike-groyne structures influence lateral exchange...
journal article 2021
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Memar, S. (author), Morales Napoles, O. (author), Hofland, Bas (author), Melling, Gregor (author)
During the last two decades, increasing vessel size in major German estuaries has led to the significant change of the local loading regime i.e. increased importance of ship-induced waves and currents. As a consequence, the intensity of ship-induced loads has increased considerably, resulting in damage to rock structures such as revetments,...
conference paper 2021
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Harms, J.M. (author), Chavarrías, Víctor (author), Yossef, Mohamed (author), Bricker, J.D. (author), Uijttewaal, W.S.J. (author), Yildiz, B. (author)
poster 2021
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Kok, Emma (author)
In the Waal bed degradation occurs, which is mainly induced by a large number of river regulations measures done in the past. Rijkswaterstaat develops possible measures and new techniques to stop riverbed erosion and/or mitigate the negative effects. One of the possible new techniques to reduce riverbed erosion locally is groyne field...
master thesis 2020
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Pasman, R. (author)
Ships in rivers create waves and these can have a negative impact on fish habitats along the river banks. A modelling study is carried out to investigate how these ship-induced waves can be damped in groyne fields by making structural modifications to the groynes. For this purpose, different types of openings (notches) are applied to the groynes...
master thesis 2020
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Zhang, R. (author)
Beach erosion, the loss of sand from a beach due to longshore and/or cross-shore sediment transport mechanisms, is a challenging problem. In order to stabilize the beach and to slow down the rate of beach erosion, the construction of hard hydraulic structures is a traditional option. Groins are one of the oldest man-made hydraulic structures...
doctoral thesis 2020
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