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Sediment management and the renewability of floodplain clay for structural ceramics
Journal of Soils and Sediments, Vol. 9, no. 6, pp. 627-639.
Modeling of depth-induced wave breaking under finite depth wave growth conditions
Recent studies have shown that the spectral wind wave model SWAN (Simulating Waves Nearshore) underestimates wave heights and periods in situations of finite depth wave growth. In this study, this inaccuracy is addressed through a rescaling of the Battjes and Janssen (1978) bore-based model for depth-induced breaking, considering both sloping bed surf zone situations and finite depth wave growth conditions.
Estimation of predictive hydrological uncertainty using quantile regression : examples from the National Flood Forecasting System (England and Wales)
In this paper, a technique is presented for assessing the predictive uncertainty of rainfall-runoff and hydraulic forecasts. The technique conditions forecast uncertainty on the forecasted value itself, based on retrospective Quantile Regression of hindcasted water level forecasts and forecast errors.
Dynamic cobble beaches as sea defence
The study presented here focussed on fundamental aspects of revetments with dynamic rock slopes and gravel beaches. Obviously, the response of gravel beaches and cobble beaches depend on parameters such as the wave height and the stone size. Here, other parameters such as the permeability of the subsoil and the influence of sand in the pores of gravel have been studied. This study is based on laboratory investigations in three types of facilities: A wave flume for small-scale tests, a wave flume for large-scale tests at a close-toprototype scale, and a wave basin for 3D tests. The results also provide insight into the magnitude of scale effects.
Dike and dune revetment impact on dune erosion
This paper describes experiments on dune erosion with the presence of fixed structures, to verify whether these structures enhance dune erosion. The experiments include connections between dune and dike and between dune revetment and dike, and breaches in dikes and dune revetments.
Estimating the benefits of single value and probability forecasting for flood warning
Flood risk can be reduced by means of 'flood forecasting, warning and response systems' (FFWRS). These systems include a forecasting sub-system which is imperfect, meaning that inherent uncertainties in hydrological forecasts may result in false alarms and missed floods. This forecasting uncertainty decreases the potential reduction of flood risk, but is seldom accounted for in estimates of the benefits of FFWRSs.
Subglacial bed conditions during Late Pleistocene glaciations and their impact on ice dynamics in the southern North Sea
Changes in subglacial bed conditions through multiple glaciations and their effect on ice dynamics are addressed through an analysis of glacigenic sequences in the Upper Pleistocene stratigraphy of the southern North Sea basin.
Zur gekoppelten numerischen Modellierung von unterirdischem Hochwasser
Unterirdisches Hochwasser ist ein Grundwasseranstieg, der durch Hochwasser in einem Fluss ausgelöst wird. In diesem Beitrag wird ein gekoppeltes Modellsystem aus einem Programm zur Berechnung von Uberflutungsflächen und einem Grundwasserströmungsprogramm vorgestellt.
The effect of longshore topographic variation on overwash modelling
Paper presented at ICCE2010 in Shanghai.This paper describes an application of the XBeach model to investigate the effect of longshore topographic varianceon overwash. The model is used to simulate the morphological response of an eight-kilometer section of Santa RosaIsland, Florida, due to Hurricane Ivan (2004).
Guidelines for capacity reducing gas pockets in wastewater mains
Pressurised wastewater mains in urbanised delta regions include many inverted siphons to cross channels,motorways, railways and other infrastructure. Accumulating gas pockets in these inverted siphons causesignificant capacity losses. These gas pockets are responsible for an estimated annual CO2 release of 10,000 tonin the Netherlands, equivalent to the electric power consumption of 5,400 households.