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Reyns, J.A.H. (author), McCall, Robert (author), Ranasinghe, Roshanka (author), van Dongeren, Ap (author), Roelvink, D. (author)An unstructured hydrodynamic model is presented that is able to simulate 2D nearshore hydrodynamics on the wave group scale. A non-stationary wave driver with directional spreading, with physics similar to XBeach (Roelvink et al., 2009) is linked to an improved and extended version of the existing unstructured flow solver Delft3D–FM (Kernkamp...journal article 2023
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Beselly, S.M. (author), Grueters, U. (author), van Der Wegen, M. (author), Reyns, J.A.H. (author), Dijkstra, J. (author), Roelvink, D. (author)As climate-change-driven extremes potentially make coastal areas more vulnerable, mangroves can help sustainably protect the coasts. There is a substantial understanding of both mangrove dynamics and hydro-morphodynamic processes. However, the knowledge of complex eco-geomorphic interactions with physical-environmental stressors remains...journal article 2023
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Elmilady, H.M.S.M.A. (author), van der Wegen, M. (author), Roelvink, D. (author), van der Spek, A. (author)Intertidal shoals are key features of estuarine environments worldwide. Climate change poses questions regarding the sustainability of intertidal areas under sea-level rise (SLR). Our work investigates the SLR impact on the long-term morphological evolution of unvegetated intertidal sandy shoals in a constrained channel-shoal system....journal article 2022
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Roelvink, Y. (author)In this report, we will focus on simulating galaxy observations with the Deep Spectroscopic High-redshift Mapper (DESHIMA). To do so, we will discuss and evaluate two main parts needed to accurately perform such a simulation:<br/><br/>Firstly, we will answer the question whether Time-dependent End-to-end Model for Post-process Optimization ...bachelor thesis 2020
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Roelvink, Marijn (author)Ripple is a relatively new payments network that aims to improve the financial system by unifying its underlying infrastructure. Given its critical function, its system must be reliable and free of bugs. Therefore it should be tested extensively. One of the test methods that has not been used on it yet is log inference, a method that has a good...bachelor thesis 2020
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Elghandour, A.M.M.A. (author), Roelvink, D. (author), Huisman, B.J.A. (author), Reyns, J.A.H. (author), Costas, Susana (author), Nienhuis, Jaap (author)Prediction of the shoreline response behind offshore breakwaters is essential for coastal protection projects. Due to the complexity of the processes behind the breakwaters (e.g., wave diffraction, currents, longshore transport), detailed modelling needs high computational efforts. Therefore, simplifying the process effect in a simpler...journal article 2020
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Elmilady, H.M.S.M.A. (author), Van Der Wegen, M. (author), Roelvink, D. (author), van der Spek, A. (author)Intertidal shoals are vital components of estuaries. Tides, waves, and sediment supply shape the profile of estuarine shoals. Ensuring their sustainability requires an understanding of how such systems will react to sea level rise (SLR). In contrast to mudflats, sandy shoals have drawn limited attention in research. Inspired by a channel...journal article 2020
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Duro, G. (author), Crosato, A. (author), Kleinhans, M. G. (author), Roelvink, D. (author), Uijttewaal, W.S.J. (author)Vessel-induced waves affect the morphology and ecology of banks and shorelines around the world. In rivers used as waterways, ship passages contribute to the erosion of unprotected banks, but their short- and long-term impacts remain unclear. This work investigates the effects of navigation on bank erosion along a reach of the regulated Meuse...journal article 2020
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Roelvink, D. (author), Huisman, B.J.A. (author), Elghandour, A.M.M.A. (author), Ghonim, Mohamed (author), Reyns, J.A.H. (author)With large-scale human interventions and climate change unfolding as they are now, coastal changes at decadal timescales are not limited to incremental modifications of systems that are fixed in their general geometry, but often show significant changes in layout that may be catastrophic for populations living in previously safe areas. This...journal article 2020
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van der Wegen, M. (author), Roelvink, D. (author), Jaffe, B. E. (author)Intertidal mudflats are morphodynamic features present in many estuaries worldwide. Often located between vegetated shores and deep channels they comprise valuable ecosystems and serve to protect the hinterland by attenuating waves. Although mudflats are persistently present on yearly to decadal time scales, little is known on their...journal article 2019
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Lashley, Christopher H. (author), Bertin, Xavier (author), Roelvink, D. (author), Arnaud, Gaël (author)Wave run-up and dune overwash are typically assessed using empirical models developed for a specific range of often-simplistic conditions. Field experiments are essential in extending these formulae; yet obtaining comprehensive field data under extreme conditions is often challenging. Here, we use XBeach Surfbeat (XB-SB)-a shortwave-averaged...journal article 2019
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Lashley, Christopher H. (author), Roelvink, D. (author), Van Dongeren, Ap R. (author), Buckley, Mark (author), Lowe, Ryan J. (author)The accurate prediction of extreme wave run-up is important for effective coastal engineering design and coastal hazard management. While run-up processes on open sandy coasts have been reasonably well-studied, very few studies have focused on understanding and predicting wave run-up at coral reef-fronted coastlines. This paper applies the short...journal article 2018
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Hoonhout, B.M. (author), Luijendijk, Arjen (author), Velhorst, R.L.C. (author), de Vries, S. (author), Roelvink, D. (author)Expanding knowledge concerning the close entanglement between subtidal and subaerial processes in coastal environments initiated the development of the open-source Windsurf modeling framework that enables us to simulate<br/>multi-fraction sediment transport due to subtidal and subaerial processes simultaneously. The Windsurf framework couples...conference paper 2017
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van der Wegen, Mick (author), Jaffe, Bruce (author), Foxgrover, Amy (author), Roelvink, D. (author)Estuarine tidal mudflats form unique habitats and maintain valuable ecosystems. Historic measurements of a mudflat in San Fancsico Bay over the past 150 years suggest the development of a rather stable mudflat profile. This raises questions on its origin and governing processes as well as on the mudflats’ faith under scenarios of sea level...journal article 2016
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Van Rooijen, A.A. (author), Van Thiel de Vries, J.S.M. (author), McCall, R.T. (author), Van Dongeren, A.R. (author), Roelvink, J.A. (author), Reniers, A.J.H.M. (author)Over the past decades the effect of vegetation (e.g. kelp, mangroves, sea grass) on nearshore coastal processes has received more and more attention. In recent years several numerical wave models have been extended to include this effect. In the current study, the numerical storm impact model XBeach was extended with formulations found in...conference paper 2015
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Guo, L. (author), Van der Wegen, M. (author), Roelvink, J.A. (author), He, Q. (author)Numerous research efforts have been devoted to understanding estuarine morphodynamics under tidal forcing. However, the impact of river discharge on estuarine morphodynamics is insufficiently examined. Inspired by the Yangtze Estuary, this work explores the morphodynamic impact of river discharge in a 560 km long tidal basin based on a 1-D model...journal article 2014
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Reyns, J. (author), Dastgheib, A. (author), Ranasinghe, R.W.M.R.J.B. (author), Luijendijk, A.P. (author), Walstra, D.J.R. (author), Roelvink, J.A. (author)A hampering factor in the application of morphodynamic models is the potential excessive time needed to complete a simulation. One way to upscale a model run is the use of a morphological factor, or MORFAC. In this paper, we investigate the upper limit to the value of the MORFAC as a function of model geometry and timestep for a schematized case...conference paper 2014
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Van Dongeren, A. (author), Van Ormondt, M. (author), Sembiring, L. (author), Sasso, R. (author), Austin, M. (author), Briere, C. (author), Swinkels, C. (author), Roelvink, J.A. (author), Van Thiel De Vries, J.S.M. (author)This paper describes the development of a physics-based rip current prediction system called CoSMoS. This system consists of a hydrodynamic prediction system which is composed of a train of surge and wave models from the global scale to the scale of a beach resort (order kilometers). For the beach resort scale model, it is of utmost importance...conference paper 2013
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Ranasinghe, R.W.M.R.J.B. (author), Callaghan, D. (author), Roelvink, D. (author)The dependency between the accuracy/uncertainty of storm erosion exceedance estimates obtained via a probabilistic model and the level of sophistication of the structural function (storm erosion model) embedded in the probabilistic model is assessed via the application of Callaghan et al.'s (2008) Joint Probability Model (JPM) at Narrabeen beach...conference paper 2013
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Roelvink, D. (author), Den Heijer, C. (author), Van Thiel De Vries, J.S.M. (author)Land reclamations and island coasts often involve strongly curved shorelines, which are challenging to be properly modeled by numerical morphological models. Evaluation of the long term development of these types of coasts as well as their response to storm conditions requires proper representation of the governing physical processes. Not all...conference paper 2013