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Flood risk reduction by parallel flood defences

Marijnissen, R., Kok, M., Kroeze, C., & van Loon-Steensma, J. - 01/08/2021 - All-Risk
Double dikes should be assessed using the transmitted loads of parallel defences rather than the failure of individual defences. The case study of this parallel defence consists of a low dike landward of a tall dike at the coast that, although designed with multi-functional purpose via a culvert, has a negligible improvement in flood protection.

Subsite Publication open access journal

Anthropogenic effects on the Contemporary Sediment Budget of the Lower Rhine-Meuse Delta Channel Network

J.R. Cox, Y. Huismans, S.M. Knaake, J.R.F.W. Leuven, N.E. Vellinga, M. van der Vegt, A.J.F Hoitink, M.G. Kleinhans - 10/06/2021 - All-Risk
The Rhine-Meuse Delta has a negative budget: Its entire network of channels is losing sediment annually. The reason for this negative budget is the high amounts of sand and mud removed for navigation to inland ports and from harbors which are periodically dredged. A strategy is required to deal with channel degradation and find ways to maintain sediment in the system.

Subsite Publication open access journal

Anthropogenic effects on the Contemporary Sediment Budget of the Lower Rhine-Meuse Delta Channel Network

J.R. Cox, Y. Huismans, S.M. Knaake, J.R.F.W. Leuven, N.E. Vellinga, M. van der Vegt, A.J.F Hoitink, M.G. Kleinhans - 10/06/2021 - All-Risk
De Rijn-Maasdelta heeft een negatieve balans: Het hele netwerk van kanalen kanalen verliest jaarlijks sediment. De reden voor deze negatieve is te wijten aan de grote hoeveelheden zand en slib die voor de scheepvaart naar binnenhavens en uit havens die periodiek worden gebaggerd. Een strategie is vereist om de aantasting van kanalen aan te pakken en manieren te vinden om de sediment in het systeem te houden.

Subsite Publication open access journal

Multidecadal Analysis of an Engineered River System Reveals Challenges for Model-Based Design of Human Interventions

Berends, K.D.; Gensen, M.R.A.; Warmink, J.J.; Hulscher, S.J.M.H. - 17/05/2021 - All-Risk
The relation between water levels and discharges in the Waal river has been estimated from observations, not finding an effect of Room for the River interventions on water levels.

Subsite Publication open access journal

Multidecadal Analysis of an Engineered River System Reveals Challenges for Model-Based Design of Human Interventions

Berends, K.D.; Gensen, M.R.A.; Warmink, J.J.; Hulscher, S.J.M.H. - 17/05/2021 - All-Risk
De relatie tussen waterstanden en afvoeren is uit beschikbare observaties bepaald voor de Waal, waarbij er geen effect op waterstanden van de Ruimte voor de Rivier maatregel kan worden waargenomen.

Subsite Publication open access journal

Evaluating residual dike resistance using the Random Material Point Method

Remmerswaal, G., Vardon, P.J., & Hicks, M.A. - 01/05/2021 - All-Risk
De reststerkte na een eerste afschuiving van een geïdealiseerde dijk reduceert de overstromingskans met 25% ten opzichte van de kans op de eerste afschuiving.

Subsite Publication open access journal

Evaluating residual dike resistance using the Random Material Point Method

Remmerswaal, G., Vardon, P.J., & Hicks, M.A. - 01/05/2021 - All-Risk
The resistance against flooding after initial failure due to slope instability of an idealised dike reduces the probability of flooding by 25% with respect to the initial failure.

Subsite Publication open access journal

How grazing management can maximise erosion resistance of salt marshes

Marin-Diaz, B., Govers, L. L., van der Wal, D., Olff, H., & Bouma, T. J. - 20/04/2021 - All-Risk
We aimed to determine how salt marsh management (i.e. grazing by large vs. small grazers vs. artificial mowing), marsh elevation and marsh age affect soil stability (i.e. soil collapse) and intrinsic lateral erodibility of salt marshes (i.e. particle-by-particle detachment).

Subsite Publication open access journal

How grazing management can maximise erosion resistance of salt marshes

Marin-Diaz, B., Govers, L. L., van der Wal, D., Olff, H., & Bouma, T. J. - 20/04/2021 - All-Risk
We aimed to determine how salt marsh management (i.e. grazing by large vs. small grazers vs. artificial mowing), marsh elevation and marsh age affect soil stability (i.e. soil collapse) and intrinsic lateral erodibility of salt marshes (i.e. particle-by-particle detachment).

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Numerical modelling of wave overtopping at dikes using OpenFOAM

Chen, W., Warmink, J. J., van Gent, M. R. A., & Hulscher, S. J. M. H. - 21/03/2021 - All-Risk
A 2D numerical model based on OpenFOAM® is set up in this study for predicting wave overtopping at dikes that have complex configurations with berms and roughness elements.

Subsite Publication open access journal