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J. Bosboom

25 records found

Laboratory investigations of beach morphology change under wave action are undertaken to gain insight into coastal processes, design coastal structures and validate the predictions of numerical models. For the results of such experiments to be reliable, it is necessary that they ...
This textbook on Coastal Dynamics focuses on the interrelation between physical wave, flow and sediment transport phenomena and the resulting morphodynamics of a wide variety of coastal systems. The textbook is unique in that it explicitly connects the dynamics of open coasts and ...
Although commonly used for the validation of morphological predictions, point-wise accuracy metrics, such as the root-mean-squared error (RMSE), are not well suited to demonstrate the quality of a high-variability prediction; in the presence of (often inevitable) location errors, ...
Morphodynamics of sandy beaches are governed by sediment transport processes. Conceptualising the process of subaqueous and subaerial sediment transport and quantifying the magnitude of sediment transport have proven to be a difficult challenge. The challenge is reflected by the ...

This thesis investigates the behaviour of the often used point-wise skill score, the MSESSini a.k.a. BSS, and develops new error metrics that, as opposed to point-wise metrics, tak ...

The quality of morphodynamic predictions is often indicated by a skill score that weighs the mean-squared error of the prediction by that of the initial bed as the reference prediction. As simple as this Brier skill score (BSS) or meansquared- error skill score (MSESS) may seem, ...
The quality of morphodynamic predictions is generally expressed by an overall grid-point based skill score, which measures the relative accuracy of a morphological prediction over a prediction of zero morphological change, using the mean-squared error (MSE) as the accuracy measur ...
Inlet interrupted coastlines will not only be affected by direct coastline recession due to sea level rise (i.e. Bruun effect), but also by basin effects due to both climate change (CC) driven sea level rise (SLR) and variations in rainfall/runoff. This paper presents a physicall ...

Waterproef, vier persoonlijke geschiedenissen van de waterbouw

Interviews met Jan Agema, Bill Kamphuis, Jurjen Battjes en Kees d' Angremond

Driekwart eeuw waterbouwkunde in Nederland: van de Afsluitdijk tot de Maeslantkering, van primitieve getijdenberekeningen tot geavanceerde rekenmodellen, van de alleswetende civiel ingenieur tot integraal waterbeheer. Wat heeft de waterbouw voortgedreven, en voor
welke uitdag ...
This paper investigates the effect of wave-induced streaming on sediment transport by applying a newly developed numerical sediment transport model. The transport model solves the intra-wave oscillatory motion and sediment concentrations. The wave-induced streaming in the wave bo ...
Sediment transport predictions are critically dependent on the prediction of near-bed wave-induced velocities. Especially the asymmetry between the forward (onshore) and backward (offshore) velocities plays an important role in determining the magnitude and direction of the wave- ...
There exists a large uncertainty about the importance of crossshoreface sediment fluxes both in relation to the dynamic evolution of the shoreface profile and the potential role as a sink or souree to the 'active' zone. The increasing availability of more reliable long-term obser ...