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A Bayesian hindcasting method of levee failures: The Breitenhagen case

Kool, J.J., Kanning, W., Jommi, C., Jonkman S.N. - 03/09/2020 - All-Risk
Het terugrekenen van dijkfalen om zo de meest waarschijnlijke oorzaak te achterhalen op basis van beperkt informatie.

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Benchmarking of numerical models for wave overtopping at dikes with shallow mildly sloping foreshores

Lashley, C. H., Zanuttigh, B., Bricker, J. D., van der Meer, J., Altomare, C., Suzuki, T., Roeber, V., and Oosterlo, P. - 01/08/2020 - All-Risk
De analyse laat zien dat zwaartekrachtgolven snel afnemen over de wal, terwijl infrazwaartekrachtgolven (IG) worden versterkt. Deze bevindingen tonen aan dat de bijdrage van IG-golven aan de overspoeling van duinen langs de baai aanzienlijk is en benadrukken de noodzaak voor elke methode of elk model om IG-golven te overwegen wanneer ze in vergelijkbare omgevingen worden toegepast.

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Benchmarking of numerical models for wave overtopping at dikes with shallow mildly sloping foreshores

Lashley, C. H., Zanuttigh, B., Bricker, J. D., van der Meer, J., Altomare, C., Suzuki, T., Roeber, V., and Oosterlo, P. - 01/08/2020 - All-Risk
Overtopping is an order of magnitude lower when infragravity waves are neglected. Using more computationally-demanding models does not guarantee improved accuracy. Despite well-modelled infragravity waves, XBeach Surfbeat underestimates overtopping. With empirical corrections, phase-averaged models like SWAN can account for infragravity waves.

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Modelling the wave overtopping flow over the crest and the landward slope of grass-covered flood defences

van Bergeijk, V.M.; Warmink, J.J.; Hulscher, S.J.M.H. - 02/07/2020 - All-Risk
Een nieuw gedetailleerd model om de belasting van overslaande golven op de dijk bekleding te berekenen en inzichten te verkrijgen in hoe de belasting veranderd langs het profiel.

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Modelling the wave overtopping flow over the crest and the landward slope of grass-covered flood defences

van Bergeijk, V.M.; Warmink, J.J.; Hulscher, S.J.M.H. - 02/07/2020 - All-Risk
A new detailed model that is able to calculate the load of the overtopping waves on the grass cover and provides insights in how the load changes along the profile.

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Using data analysis, expert elicitation and hydraulic models to quantify uncertainties in a bifurcating river

Gensen, M. R. A., Warmink, J. J., Huthoff, F., & Hulscher, S. J. M. H. - 01/07/2020 - All-Risk
The uncertainties of these three methods must be taken into account in the assessment of flood risks.

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Using data analysis, expert elicitation and hydraulic models to quantify uncertainties in a bifurcating river

Gensen, M. R. A., Warmink, J. J., Huthoff, F., & Hulscher, S. J. M. H. - 01/07/2020 - All-Risk

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Experimental Study on the Influence of Berms and Roughness on Wave Overtopping at Rock-Armoured Dikes

Chen, W., Marconi, A., van Gent, M.R.A., Warmink, J.J., Hulscher, S.J.M.H. - 14/06/2020 - All-Risk
Empirical equations are derived based on the analysis of ex-perimental data from new physical model tests. The influence of roughness of the rock armour applied on parts of water-side slopes is estimated by introducing the location weighting coefficients.

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Relative Magnitude of Infragravity Waves at Coastal Dikes with Shallow Foreshores: A Prediction Tool

Lashley, C. H., Bricker, J. D., Van der Meer, J., Altomare, C., and Suzuki, T. - 11/06/2020 - All-Risk
Here, we combine physical and numerical modeling to: (1) assess the influence of various offshore, foreshore, and dike slope conditions on the dominance of infragravity waves (IG) waves over those at sea and swell (SS) frequencies; and (2) develop a predictive model that allows practitioners to quickly estimate the relative magnitude of IG.

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Relative Magnitude of Infragravity Waves at Coastal Dikes with Shallow Foreshores: A Prediction Tool

Lashley, C. H., Bricker, J. D., Van der Meer, J., Altomare, C., and Suzuki, T. - 11/06/2020 - All-Risk
Hier combineren we fysieke en numerieke modellering om: (1) de invloed van verschillende offshore-, vooroever- en dijkhellingcondities over de dominantie van infragravitatiegolven (IG) golven over die op zee en deining (SS) frequenties; en (2) een voorspellend model ontwikkelen waarmee beoefenaars snel de relatieve omvang van IG kunnen schatten.

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