Searched for: subject:"coastal%5C+engineering"
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Hoonhout, B.M. (author)
This thesis explores the nature of aeolian sediment availability and its influence on aeolian sediment transport. The aim is to improve large scale and long term aeolian sediment transport estimates in (nourished) coastal environments. The generally poor performance of aeolian sediment transport models with respect to measurements in coastal...
doctoral thesis 2017
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Zhu, Q. (author), van Prooijen, B.C. (author), Wang, Zhengbing (author), Yang, SL (author)
Short-term bed-level variability in tidal wetlands has important implication both for ecology and engineering. In this study, we combined in situ measurements with model simulations to quantify short-term bed-level changes on a meso-macrotidal wetland in the Yangtze River Delta. On the middle flat, we observed erosion during neap-to-mean tides...
journal article 2017
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Huisman, B.J.A. (author), de Schipper, M.A. (author), Ruessink, B. G. (author)

Bed sediment composition, with a focus on the median grain size D50, was investigated at a large-scale nourishment (The ‘Sand Motor’) at the Dutch coast (∼21.5 million m3 sand). Considerable alongshore heterogeneity of the bed composition (D50) was observed as the Sand Motor evolved over time with (1)...

journal article 2016
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van der Vegt, H. (author), Storms, J.E.A. (author), Walstra, D.J.R. (author), Howes, N.C. (author)
Abstract Understanding the processes and conditions at the time of deposition is key to the development of robust geological models which adequately approximate the heterogeneous delta morphology and stratigraphy they represent. We show how the mechanism of sediment transport (the proportion of the sediment supply transported as bed load vs....
journal article 2016
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Walstra, D.J.R. (author)
Nearshore sandbars have a lifetime of many years, during which they exhibit cyclic, offshore directed behaviour with strong alongshore coherence. A bar is generated near the shoreline and grows in height and width while migrating offshore, before finally decaying at the seaward limit of the surf zone. It may take 10 to 15 years for a bar to...
doctoral thesis 2016
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Meirelles Nunes Da Rocha, Saulo (author), Vinzon, S.B. (author)

Extensive mud deposits are found off Cassino Beach, Brazil. The wave damping over the muddy bottom was studied using field measurements. By applying a technique of spectral analysis we showed that the wave attenuation occurred differently throughout the wave spectra. Field measurements revealed that the maximum wave energy dissipation took...

journal article 2016
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Dam, G. (author), van der Wegen, M. (author), Labeur, R.J. (author), Roelvink, D. (author)

We hindcast a 110 year period (1860-1970) of morphodynamic behavior of the Western Scheldt estuary by means of a 2-D, high-resolution, process-based model and compare results to a historically unique bathymetric data set. Initially, the model skill decreases for a few decades. Against common perception, the model skill increases after that to...

journal article 2016
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Fang, Jiayu (author), Chen, Y. (author), Yao, P. (author), Su, M. (author)

The effective roughness height is an important parameter in coastal sediment transport models. It has been extensively investigated in the past but few research results are related to the high-concentrated flows which often occur in a silty coast. A series of experiments has been carried out in a wave-current flume with silt-sized sediment...

journal article 2016
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van Damme, M. (author)
A process based assessment of the probability of failure of a flood embankment, as well as an assessment of the consequences of failure of an embankment require insights into the stresses on the landside slope of an embankment. These assessments are hindered by the empirical nature of the wave overtopping parameters. Failure initiation is often...
journal article 2016
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Townend, I (author), Wang, Zhengbing (author), Stive, M.J.F. (author), Zhou, Z. (author)
Whilst much attention has been given to models that describe wave, tide and sediment transport processes in sufficient detail to determine the local changes in bed level over a relatively detailed representation of the bathymetry, far less attention has been given to models that consider the problem at a much larger scale (e.g. that of...
journal article 2016
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Le, H.T. (author), Verhagen, H.J. (author), Vrijling, J.K. (author)
Grass covers have been applied as an effective measure for protecting river levees and sea dikes. We conducted experiments to show how roots considerably improve the shear strength of soil on dike slopes. Roots of 1-year-old Bermuda and Carpet grass may increase the total shear strength of up to 20 kPa. Exposed to severe overtopping flow, dike...
journal article 2016
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Cenedese, Claudia (author), Gatto, V.M. (author)

Idealized laboratory experiments have been conducted in a two-layer stratified fluid to investigate the leading-order dynamics that control submarine melting and meltwater export near a vertical ice-ocean interface as a function of subglacial discharge. In summer, the discharge of surface runoff at the base of a glacier (subglacial discharge)...

journal article 2016
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van Rooijen, A.A. (author), McCall, RT (author), van Thiel de Vries, J.S.M. (author), van Dongeren, AR (author), Reniers, A.J.H.M. (author), Roelvink, D. (author)
Aquatic vegetation in the coastal zone attenuates wave energy and reduces the risk of coastal hazards, e.g., flooding. Besides the attenuation of sea-swell waves, vegetation may also affect infragravity-band (IG) waves and wave setup. To date, knowledge on the effect of vegetation on IG waves and wave setup is lacking, while they are potentially...
journal article 2016
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Verhagen, H.J. (author)
For this book we have deliberately chosen that the text should follow a more or less logical design procedure for closure dams. It is emphasized that only the construction aspect of stopping the water movement is considered in this book. This means that only the closing operation itself is treated; the transformation of the closing dam into a...
lecture notes 2016
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Stoop, B. (author), Bouziotas, D. (author), Hanssen, J.L.J. (author), Dunnewolt, J. (author), Postma, M.G. (author)
The province of Ca Mau is the southernmost part of Vietnam and the Mekong Delta. The water system of Ca Mau faces multiple challenges, both in its coastal zone and in its inland regions. the coastal zone in the province. In view of this, this study presents an integrated approach for combined coastal and inland water management in Ca Mau, under...
report 2015
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Alebregtse, N.C. (author), De Swart, H.E. (author), Schuttelaars, H.M. (author)
journal article 2013
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Baart, F. (author)
This thesis answers the question "How can we show and improve our confidence in coastal forecasts?", by providing four examples of common coastal forecasts. The first example shows how to improve the estimate of the one in ten thousand year storm-surge level. The three dimensional reconstruction, based on paintings, shows that structural erosion...
doctoral thesis 2013
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Stive, M.J.F. (author), Fresco, L.O. (author), Kabat, P. (author), Parmet, B.W.A.H. (author), Veerman, C.P. (author)
Over two-thirds of the Netherlands’ economy and half its population is below sea level. The Dutch government recently set out far-reaching recommendations on how to keep the country flood-proof over the next century given the likelihood of rising sea levels and river flows. This paper explains the recommendations, which are based on a gradual...
journal article 2011
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Ter Brake, M.C. (author), Schuttelaars, H.M. (author)
In many tidal embayments, complex patterns of channels and shoals are observed. To gain a better understanding of these features, an idealized model, that describes the interaction of water motion, sediment transport and bed evolution in a semi-enclosed, rectangular basin, is developed and analysed. To explain the initial formation of channels...
journal article 2011
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d'Angremond, K. (author), van Roode, F. (author), Verhagen, H.J. (author)
lecture notes 2008
Searched for: subject:"coastal%5C+engineering"
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