Searched for: subject:"sediment%5C+transport"
(1 - 20 of 223)

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Tene, M. (author), Stuparu, Dana E. (author), Kurowicka, D. (author), El Serafy, G.Y.H. (author)

This paper describes a novel sensitivity analysis method, able to handle dependency relationships between model parameters. The starting point is the popular Morris (1991) algorithm, which was initially devised under the assumption of parameter independence. This important limitation is tackled by allowing the user to incorporate dependency...

journal article 2018
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Roest, Lambertus W.M. (author)
The Sand Engine is an example of a feeder nourishment that is intended to nourish coastal systems. This strategy is based on placing sediments highly concentrated at one location, from which it is expected to spread alongshore over large distances on decadal timescales.

Here the morphological development of the Sand Engine mega feeder...
abstract 2018
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Baar, A.W. (author), de Smit, Jaco (author), Uijttewaal, W.S.J. (author), Kleinhans, Maarten G. (author)

Large-scale morphology, in particular meander bend depth, bar dimensions, and bifurcation dynamics, are greatly affected by the deflection of sediment transport on transverse bed slopes due to gravity and by secondary flows. Overestimating the transverse bed slope effect in morphodynamic models leads to flattening of the morphology, while...

journal article 2018
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Wei, X. (author), Kumar, M. (author), Schuttelaars, H.M. (author)

To investigate the dominant sediment transport and trapping mechanisms, a semi-analytical three-dimensional model is developed resolving the dynamic effects of salt intrusion on sediment in well-mixed estuaries in morphodynamic equilibrium. As a study case, a schematized estuary with a converging width and a channel-shoal structure...

journal article 2018
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Xie, Dongfeng (author), Pan, Cunhong (author), Wu, Xiuguang (author), Gao, Shu (author), Wang, Zhengbing (author)

We investigate the morphological responses of the Hangzhou Bay, China, located immediately south of the Changjiang Estuary, to the drastic reduction of the sediment load from the Changjiang River and the large-scale coastal embankment schemes over past decades. The spatial patterns of deposition and erosion, sediment volume changes, and the...

journal article 2017
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Wei, X. (author)
Estuaries are important ecosystems accommodating a large variety of living species. Estuaries are also important to people by their demand of freshwater for drinking, irrigation, and industry. Due to natural changes and human activities, the estuarine water quality, influenced by both salinity and turbidity (the cloudiness or haziness of water),...
doctoral thesis 2017
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Hoonhout, B.M. (author), de Vries, S. (author)

Mega nourishments are intended to enhance growth and resilience of coastal dunes on medium to long time scales by stimulation of natural sediment transport processes. The growth and resilience of coastal dunes largely depends on the presence of a continuous supply of aeolian sediment. A recent example of a mega nourishment is the 21 Mm3<...

journal article 2017
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Flores, Raúl P. (author), Rijnsburger, S. (author), Horner-Devine, Alexander R. (author), Souza, Alejandro J. (author), Pietrzak, J.D. (author)

We present measurements of along and across-shore sediment transport in a region of the Dutch coast 10 km north of the Rhine River mouth. This section of the coast is characterized by strong vertical density stratification because it is within the midfield region of the Rhine region of freshwater influence, where processes typical of the far...

journal article 2017
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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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Cohn, Nicholas (author), Ruggiero, P (author), de Vries, S. (author), García-Medina, Gabriel (author)
Seasonal variability in wave conditions drive corresponding cycles of erosion and accretion along sandy beaches. Despite the fact that these oscillations are well documented at numerous sites throughout the world, the physical processes driving beach recovery remain poorly understood. Using field data from a low sloping, dissipative beach in the...
conference paper 2017
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Huisman, B.J.A. (author), Vargas Solis, Astrid (author), de Schipper, M.A. (author), Radermacher, M. (author), Ranasinghe, Roshanka (author)
Impact of spatial variability in the nearshore bathymetry on net sediment transport rates has been investigated for a selection of observed beach states at the Dutch coast. The beach states comprise a longshore bar trough and two transverse bar rip situations, which were present at the large scale Sand Motor nourishment at the Holland coast....
conference paper 2017
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Hoonhout, B.M. (author), Luijendijk, A.P. (author), de Vries, S. (author), Roelvink, D. (author)
Expanding knowledge concerning the close entanglement between subtidal and subaerial processes in coastal environments initiated the development of the open-source Windsurf modeling framework that enables us to simulate
multi-fraction sediment transport due to subtidal and subaerial processes simultaneously. The Windsurf framework couples...
conference paper 2017
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de Vries, S. (author), Verheijen, A.H. (author), Hoonhout, B.M. (author), Vos, S.E. (author), Cohn, Nicholas (author), Ruggiero, P (author)
This paper shows the first results of measured spatial variability of beach erosion due to aeolian processes during the recently conducted SEDEX2 field experiment at Long Beach, Washington, U.S.A.. Beach erosion and sedimentation were derived using series of detailed terrestrial LIDAR measurements of beach morphology during three low tide...
conference paper 2017
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van Maren, D.S. (author), Cronin, Katherine (author)

Estuarine suspended sediment transport models are typically calibrated against suspended sediment concentration data. These data typically cover a limited range of the actual suspended sediment concentration dynamics, constrained in either time or space. As a result of these data limitations, the available data can be reproduced with complex...

journal article 2016
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Yao, P. (author)
The Jiangsu coast is located in eastern China bordering the South Yellow Sea. It is strongly affected by the semi-diurnal tides. Both the tidal range and the tidal current vary greatly in space due to local tidal wave systems and morphologies. The radial tidal current pattern identified at the central coast is suggested to play a primary role in...
doctoral thesis 2016
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Mil-Homens, J. (author)
Longshore Sediment Transport (LST) is one of the main drivers of beach morphology. It works at temporal scales ranging from hours to centuries and at spatial scales ranging from tens of meters to hundreds of kilometres. Episodic, large LST rates can result in important physical impacts such as inlet closure, rapid build-up of ebb/flood shoals,...
doctoral thesis 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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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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Hu, Z. (author)
Tidal flat landscape formation and evolution are closely related to the biotic and abiotic processes that take place in the intertidal environments. Extensive studies have been carried out on the relevant agents such as hydrodynamics, sediment transport and the related ecosystem (vegetation and benthic communities) dynamics. However, the...
doctoral thesis 2015
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Guo, L. (author), Van der Wegen, M. (author), Roelvink, J.A. (author), He, Q. (author)
Numerous research efforts have been devoted to understanding estuarine morphodynamics under tidal forcing. However, the impact of river discharge on estuarine morphodynamics is insufficiently examined. Inspired by the Yangtze Estuary, this work explores the morphodynamic impact of river discharge in a 560 km long tidal basin based on a 1-D model...
journal article 2014
Searched for: subject:"sediment%5C+transport"
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