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Morphodynamic upscaling with the MORFAC approach

Ranasinghe, R.W.M.R.J.B. (author), Swinkels, C. (author), Luijendijk, A.P. (author), Bosboom, J. (author), Roelvink, D. (author), Stive, M.J.F. (author), Walstra, D.J.R. (author)

The Morphological Acceleration Factor (MORFAC) approach for morphodynamic upscaling enables the simulation of long term coastal evolution. However the general validity of the MORFAC concept for coastal applications has not yet been comprehensively investigated. Furthermore, a robust and objective method for the a priori determination of the...

conference paper 2010

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Development and field validation of a 2DH curvilinear storm impact model

Roelvink, D. (author), Stelling, G. (author), Hoonhout, B.M. (author), Risandi, J. (author), Jacobs, W. (author), Merli, D. (author)

The formulations of the 2DH process-based, nearshore morphological model XBeach were extended to allow for curvilinear grids using a finite volume approach. The formulations were tested for schematic cases such as a circular island and a field validation study was carried out for the case of storm erosion during a construction phase of the soft...

conference paper 2012

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Modelling of coastline evolution due to tidal inlet migration: real-world case studies

Elghandour, A. (author), Hinson, S.K. (author), Roelvink, D. (author), Reyns, J. (author), Costas, S. (author)

In the light of climate change, sea-level rise, and human interventions, increasing the predictability of the coastline evolution on a temporal scale from years to decades are highly demanding for adaptation planning. However the rapid development in the coastal modelling capabilities, more efforts are needed to bridge the gap between the...

conference paper 2021

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A probabilistic approach to investigate the effect of wave chorology on process-based morphological modelling

Dastgheib, A. (author), Rajabalinejad, M.R. (author), Ranasinghe, R. (author), Roelvink, D. (author)

This paper demonstrates the sensitivity of morphological process-based models to the chronology of input wave conditions. In this research the effect of an emerged offshore breakwater on the morphology of the beach is investigated. A 30 day long morphological simulation with real time history of the wave (brute force - base case) is compared...

conference paper 2012

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Process-based modeling of coastal dune development

Muller, M.C. (author), Roelvink, D. (author), Luijendijk, A.P. (author), De Vries, S. (author), Van Thiel de Vries, J.S.M. (author)

In this paper, the aeolian transport model DUNE (Sauermann et al., 2001, Kroy et al., 2002) that describes important features and dynamics of typical desert dunes, is extended such that it can be applied in sandy coastal areas. Initial tests explore the limitations of the model in coastal areas after which adaptations are proposed and...

conference paper 2012

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The influence of hydrodynamic forcing on sediment transport pathways and shoreline evolution in a coral reef environment

Pomeroy, A.W.M. (author), Lowe, R.J. (author), Bowyer, C. (author), Zhang, Z. (author), Falter, J. (author), Van Dongeren, A. (author), Roelvink, D. (author)

conference paper 2013

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Quantifying nearshore morphological recovery time scales using argus video imaging: Palm Beach, Sydney and Duck, North Carolina

Ranasinghe, R.W.M.R.J.B. (author), Holman, R. (author), De Schipper, M.A. (author), Lippmann, T. (author), Wehof, J. (author), Duong, T.M. (author), Roelvink, D. (author), Stive, M.J.F. (author)

Time scales of post-storm nearshore morphological recovery and physical processes governing these time scales are poorly understood at present. The ability to predict nearshore morphological recovery time scales based on pre-, during- or post-resetting storm conditions is an essential requirement for building and validating scale aggregated...

conference paper 2012

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Does a more sophisticated storm erosion model improve probabilistic erosion estimates?

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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Climate change impacts on the stability of small tidal inlets: A numerical modelling study using Realistic Analogue approach

Duong, T. (author), Ranasinghe, R. (author), Luijendijk, A. (author), Dastgheib, A. (author), Roelvink, D. (author)

Tidal inlets are of great societal importance as they are often associated with ports and harbours, industry, tourism, recreation and prime waterfront real estate. Their behaviour is governed by the delicate balance of oceanic processes (tides, waves and mean sea level), and fluvial/estuarine processes (riverflow and heat fluxes), all of which...

conference paper 2012

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Morphological modelling of strongly curved islands

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

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Impact of nourishments on nearshore currents and swimmer safety on the Dutch coast

de Zeeuw, R.C. (author), de Schipper, M.A. (author), Roelvink, D. (author), de Vries, S. (author), Stive, M.J.F. (author)

Assessing swimmer safety along the Dutch coast entails more than only assessing the risk of rip currents. Seven criteria have been formulated to make a comprehensive assessment of swimmer safety along the Dutch coast. These are based on interviews with lifeguards, rescue report statistics and detailed lagrangian measurements of the current...

conference paper 2012

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How tides and waves enhance aeolian sediment transport at the sand motor mega-nourishment

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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Long-term morphological modelling: combining storm impact and daily conditions in an integrated modeling framework

Bodde, W.P. (author), McCall, R.T. (author), Jansen, M.H.P. (author), van den Berg, Annemijn (author), Roelvink, D. (author)

conference paper 2017

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Wave attenuation potential, sediment properties and mangrove growth dynamics data over Guyana's intertidal mudflats: assessing the potential of mangrove restoration works

Best, U.S.N. (author), van der Wegen, Mick (author), Dijkstra, Jasper (author), Reyns, J.A.H. (author), van Prooijen, Bram (author), Roelvink, D. (author)

Coastal mangroves, thriving at the interface between land and sea, provide robust flood risk reduction. Projected increases in the frequency and magnitude of climate impact drivers such as sea level rise and wind and wave climatology reinforce the need to optimize the design and functionality of coastal protection works to increase resilience....

journal article 2022

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Development and Validation of Quasi-Eulerian Mean Three-Dimensional Equations of Motion Using the Generalized Lagrangian Mean Method

Nguyen, T.D. (author), Jacobsen, Niels G. (author), Roelvink, D. (author)

This study aims at developing a new set of equations of mean motion in the presence of surface waves, which is practically applicable from deep water to the coastal zone, estuaries, and outflow areas. The generalized Lagrangian mean (GLM) method is employed to derive a set of quasi-Eulerian mean three-dimensional equations of motion, where...

journal article 2021

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Relationship between three-dimensional radiation stress and Vortex-Force representations

Nguyen, T.D. (author), Reniers, A.J.H.M. (author), Roelvink, D. (author)

In numerical ocean models, the effect of waves on currents is usually expressed by either vortex-force or radiation stress representations. In this paper, the differences and similarities between those two representations are investigated in detail in conditions of both conservative and nonconservative waves. In addition, comparisons between...

journal article 2021

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Reduced complexity modeling of shoreline response behind offshore breakwaters

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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Modeling the Morphodynamic Response of Estuarine Intertidal Shoals to Sea-Level Rise

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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Modelling wave group-scale hydrodynamics on orthogonal unstructured meshes

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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Eleven years of mangrove–mudflat dynamics on the mud volcano-induced prograding delta in east java, indonesia: Integrating uav and satellite imagery

Beselly, S.M. (author), van der Wegen, Mick (author), Grueters, Uwe (author), Reyns, J.A.H. (author), Dijkstra, Jasper (author), Roelvink, D. (author)

This article presents a novel approach to explore mangrove dynamics on a prograding delta by integrating unmanned aerial vehicle (UAV) and satellite imagery. The Porong Delta in Indonesia has a unique geographical setting with rapid delta development and expansion of the mangrove belt. This is due to an unprecedented mud load from the LUSI...

journal article 2021