Searched for: subject:"Foreshore"
(1 - 20 of 35)

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Willemsen, Pim W.J.M. (author), Borsje, Bas W. (author), Vuik, V. (author), Bouma, Tjeerd J. (author), Hulscher, Suzanne J.M.H. (author)
Foreshores consisting of both bare tidal flats and vegetated salt marshes are found worldwide and they are well studied for their wave attenuating capacity. However, most studies only focus on the small scale: just some isolated locations in space and only up to several years in time. In order to stimulate the implementation of foreshores...
journal article 2020
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Gruwez, Vincent (author), Altomare, Corrado (author), Suzuki, T. (author), Streicher, Maximilian (author), Cappietti, Lorenzo (author), Kortenhaus, Andreas (author), Troch, Peter (author)
Three open source wave models are applied in 2DV to reproduce a large-scale wave flume experiment of bichromatic wave transformations over a steep-sloped dike with a mildly-sloped and very shallow foreshore: (i) the Reynolds-averaged Navier–Stokes equations solver interFoam of OpenFOAM® (OF), (ii) the weakly compressible smoothed particle...
journal article 2020
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Nguyen, H. (author), Hofland, B. (author), Chinh, Vu Dan (author), Stive, M.J.F. (author)
The spectral wave period T<sub>m-1,0</sub> at the toe of sea-dikes is a crucial parameter to predict wave overtopping discharge over sea-dikes. It is known from literature that this period quickly increases when waves reach shallow foreshores; however, sometimes the assumption is made that the wave period remains constant from offshore to...
journal article 2020
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Lashley, Christopher H. (author), Bricker, J.D. (author), van der Meer, J.W. (author), Altomare, Corrado (author), Suzuki, T. (author)
Despite the widely recognized role of infragravity (IG) waves in many often-hazardous nearshore processes, spectral wave models, which exclude IG-wave dynamics, are often used in the design and assessment of coastal dikes. Consequently, the safety of these structures in environments where IG waves dominate remains uncertain. Here, we combine...
journal article 2020
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Gruwez, Vincent (author), Altomare, Corrado (author), Suzuki, T. (author), Streicher, Maximilian (author), Cappietti, Lorenzo (author), Kortenhaus, Andreas (author), Troch, Peter (author)
In this paper, a Reynolds-averaged Navier-Stokes (RANS) equations solver, interFoam of OpenFOAM®, is validated for wave interactions with a dike, including a promenade and vertical wall, on a shallow foreshore. Such a coastal defence system is comprised of both an impermeable dike and a beach in front of it, forming the shallow foreshore...
journal article 2020
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Vuik, V. (author)
Flood risk reduction in coastal areas is traditionally approached from a conventional engineering perspective, where dikes and dams are built to withstand the forces of tides, surges and waves. Recently, a nature-based approach to flood risk reduction is increasingly promoted, in which the benefits of coastal ecosystems for reducing the impact...
doctoral thesis 2019
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Lange, Lea (author)
Bathymetry strongly affects nearshore hydrodynamics that drive sediment transport. However, recent bed level information is not always available, especially not simultaneously resolved in space and time. Time series of radar backscatter images can be used to retrieve bed levels in the intertidal area with the so-called Temporal Waterline...
master thesis 2019
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Knops, David (author)
In this thesis, the effects of the foreshore and heterogeneities of the subsoil on the piping safety analysis are determined. The effects are searched for by use of the numerical model D-Geo Flow. The results of this research give more insights in when and how a foreshore has to be included in the safety analysis. It is also concluded that...
master thesis 2018
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Vuik, V. (author), van Vuren, S. (author), Borsje, Bas W. (author), van Wesenbeeck, B.K. (author), Jonkman, Sebastiaan N. (author)
Vegetated foreshores adjacent to engineered structures (so-called hybrid flood defenses), are considered to have high potential in reducing flood risk, even in the face of sea level rise and increasing storminess. However, foreshores such as salt marshes and mangrove forests are generally characterized by relatively strong temporal and...
journal article 2018
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van Zelst, Vincent (author)
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...
master thesis 2018
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van Montfoort, Mick (author)
This Thesis studies the safety assessment method for macro-stability of dikes with high foreshores. Currently, this method is a semi-probabilistic method, which does not take the presence of a foreshore into account. The research concludes that the presence of a foreshore has a significant influence on the failure probability with respect to...
master thesis 2018
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Oosterlo, P. (author), McCall, R.T. (author), Vuik, V. (author), Hofland, B. (author), van der Meer, J.W. (author), Jonkman, Sebastiaan N. (author)
Shallow foreshores in front of coastal dikes can reduce the probability of dike failure due to wave overtopping. A probabilistic model framework is presented, which is capable of including complex hydrodynamics like infragravity waves, and morphological changes of a sandy foreshore during severe storms in the calculations of the probability of...
journal article 2018
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Kar, Attman (author)
Across the world, the presence of humans in coastal regions is always increasing. Hydraulic forcing from extreme events is a large risk around the global coastlines, the risk being complicated by the increased human presence along the coasts.<br/>The knowledge that vegetation can be used as a coastal protection measure is not something new. The...
master thesis 2017
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Hofland, B. (author), Chen, X. (author), Altomare, Corrado (author), Oosterlo, P. (author)
During the last decades, the spectral wave period <i>T</i><sub>m-1,0</sub> has become accepted as a characteristic wave period when describing the hydraulic attack on coastal structures, especially over shallow foreshores. In this study, we derive an empirical prediction formula for <i>T</i><sub>m-1,0</sub> on shallow to extremely shallow...
journal article 2017
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Van Osselen, K.R. (author)
Dutch flood protections are assessed every five to six years in a nationwide safety assessment round. During the last assessment round large dike stretches in the Dutch Wadden Sea could not meet the safety requirements, and were assessed with failure. Dike strengthening is therefore needed in these areas. However, in front of these dike salt...
master thesis 2016
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Vuik, V. (author), Jonkman, Sebastiaan N. (author), Borsje, B. W. (author), Suzuki, T. (author)
This paper analyses the effect of vegetation on wave damping under severe storm conditions, based on a combination of field measurements and numerical modelling. The field measurements of wave attenuation by vegetation were performed on two salt marshes with two representative but contrasting coastal wetland vegetation types: cordgrass ...
journal article 2016
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Suh Heo, H.Y. (author)
Various flood protection measures are studied across the globe, and nature-friendly and environmentally resilient methods are gaining more attention. As part of the building with nature initiative, the project BE SAFE (Bio-Engineering for SAFEty) studies the effects of a vegetated foreshore as a flood protection measure which is found to be very...
master thesis 2016
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Oosterlo, P. (author)
In this thesis, a method was developed, with which the infragravity waves and morphological changes of a sandy foreshore are included in the calculation of the probability of dike failure due to wave overtopping. Constructing a natural foreshore in front of the dike can be an attractive and innovative method to decrease the failure probability....
master thesis 2015
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Suzuki, T. (author), Altomare, C. (author), Verwaest, T. (author), Trouw, K. (author), Zijlema, M. (author)
In this paper, a numerical wave-flow model SWASH, based on non-linear shallow water equation with non- hydrostatic pressure, is applied to the estimation of wave overtopping over a dike in shallow foreshores. First sensitivity analysis is conducted to see the influence of wave generation, grid size, time window and bottom friction by one...
conference paper 2014
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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
Searched for: subject:"Foreshore"
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