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van Bijsterveldt, Celine E.J. (author), van der Wal, Daphne (author), Gijón Mancheño, A. (author), Fivash, Gregory S. (author), Helmi, Muhammad (author), Bouma, T.J. (author)Mangrove forests are increasingly valued as wave-attenuating buffers in coastal flood defence strategies. However, as mangroves are vulnerable to wave-induced erosion, this raises the question, how can the stability of these protective mangrove forests be promoted? To address this question, we investigate how mangrove dynamics in a microtidal...journal article 2023
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Nguyên, Hà (author)A sea-dike system is of importance for the protection of the hinterland. However, the effect of very gentle and shallow sloping foreshores (in the order up to 1 in 1000) on wave overtopping processes has not yet been quantified enough and, thus, so far is not well understood. This dissertation seeks an answer to the question of whether the...doctoral thesis 2022
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Briganti, Riccardo (author), Musumeci, Rosaria Ester (author), van der Meer, Jentsje (author), Romano, Alessandro (author), Stancanelli, L.M. (author), Kudella, Matthias (author), Akbar, Rizki (author), Altomare, Corrado (author), Suzuki, T. (author)This work presents the results of an investigation on how wave overtopping at a near-vertical seawall at the back of a sandy foreshore is influenced by sequences of erosive storms. The experiments were carried out in the Large Wave Flume (GWK) at Leibniz University, Hannover (Germany). The tested layout consisted of a near-vertical 10/1...journal article 2022
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Lashley, Christopher H. (author)Coastal communities across the globe are often protected by structures, such as seawalls, levees or dikes, which allow only a safe volume of water to pass over or “overtop” them due to wave action during storms. The area seaward of these structures is often characterised by shallow, gently sloping beds referred to as foreshores.<br/>As storm...doctoral thesis 2021
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Lashley, Christopher H. (author), Van Der Meer, Jentsje (author), Bricker, J.D. (author), Altomare, Corrado (author), Suzuki, T. (author), Hirayama, Katsuya (author)The state-of-The-Art formulas for mean wave overtopping (q) assessment typically require wave conditions at the toe of the structure as input. However, for structures built either on land or in very shallow water, obtaining accurate estimates of wave height and period at the structure toe often proves difficult and requires the use of either...journal article 2021
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Nguyên, Hà (author), Hofland, Bas (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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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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Relative Magnitude of Infragravity Waves at Coastal Dikes with Shallow Foreshores: A Prediction ToolLashley, 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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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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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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Vuik, V. (author), van Vuren, S. (author), Borsje, Bas W. (author), van Wesenbeeck, B (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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Oosterlo, P. (author), McCall, R.T. (author), Vuik, V. (author), Hofland, Bas (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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Hofland, Bas (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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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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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
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Baart, S. (author), Ebbens, R. (author), Nammuni-Krohn, J. (author), Verhagen, H.J. (author)Present design tools, as found in the Rock Manual or Coastal Engineering Manual, for the determination of toe rock size for rubble mound breakwaters are based on test data with a large spread: data is relatively dispersed around the centre and descriptive equations have limited applicability ranges. New research has been undertaken to contribute...conference paper 2010
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Bux, I. (author)Experience has shown that the stability parameters relating to breakwater armour unit stability vary considerably for steep foreshores when compared to milder foreshore slope. Furthermore, the change from the deep water spectra (Tm0) to the shallow water wave spectra (Tm-1.0) does not fully explain the difference. Leading on from recent...report 2007
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Tuan, T.Q. (author), Verhagen, H.J. (author), Visser, P.J. (author), Stive, M.J.F. (author)To increase physical insight into wave overwash processes at low-crested beach barriers, wave overtopping discharge events rather than the conventional average overtopping discharge need to be quantified. Also, in order to make intelligent use of the many empirical formulations on wave overtopping discharge at breakwaters from literature, a...journal article 2006
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