Searched for: subject%3A%22Wave%255C%2Battenuation%22
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Stam, Martine (author)
Flood defenses are important to keep large parts of the Netherlands dry. These primary flood defences<br/>are every twelve years assessed on safety during the Dutch national safety assessment. In 2017, the new<br/>safety standards (WBI2017) were introduced. These stricter standards caused that in total 251 km of the<br/>primary flood defences...
master thesis 2018
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Vuik, V. (author), Suh Heo, H.Y. (author), Zhu, Zhenchang (author), Borsje, Bas W. (author), Jonkman, Sebastiaan N. (author)
One of the services provided by coastal ecosystems is wave attenuation by vegetation, and subsequent reduction of wave loads on flood defense structures. Therefore, stability of vegetation under wave forcing is an important factor to consider. This paper presents a model which determines the wave load that plant stems can withstand before...
journal article 2018
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Godfroij, Maartje (author)
The main objective of this thesis is to assess the effectiveness of Nature-based Solutions in reducing flood risk in the Galveston Bay by means of wave attenuation. The methodology to answer these questions consists of both literature review and numerical modelling. The wave height reducing capabilities of marsh vegetation, seagrass meadows and...
master thesis 2017
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Hábetler, Zsófia (author)
The main objective and secondary objective, which corresponds to the in-depth research are as follows:<br/><br/>(1) To develop guidelines for engineers to include salt marshes in hydraulic infrastructure projects, subject to the Building with Nature philosophy.<br/>(2) To investigate the effect of grazing at salt marshes on the coastal...
master thesis 2017
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Hewageegana, Hithaishi (author)
Coastal defense mechanisms are an integral part in the safety of infrastructure and communities residing on coastlines around the globe. In long temporal and spatial scales, traditional “hard structures” for coastal defense can become infeasible. Incorporation of soft engineering methods for coastal defense can then be a viable solution....
master thesis 2017
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Janssen, M.P.J. (author)
Although mangrove forests have proven to contribute to wave dissipation significantly, these ecosystem are threatened mainly by the expanding aquaculture. International or nationwide applied greenbelt policies are often used for the preservation of the mangroves and hence the flood hazard reduction, without taking local (hydrodynamic) conditions...
master thesis 2016
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Barnhoorn, A. (author), Jackson, I. (author), Fitz Gerald, J. D. (author), Kishimoto, A. (author), Itatani, K. (author)
Torsional forced-oscillation experiments on a suite of synthetic MgO polycrystals, of high-purity and average grain sizes of 1–100 µm, reveal strongly viscoelastic behavior at temperatures of 800–1300°C and periods between 1 and 1000 s. The measured shear modulus and associated strain energy dissipation both display monotonic variations with...
journal article 2016
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Vuik, V. (author), Jonkman, Sebastiaan N. (author)
Salt marshes are a characteristic feature of estuaries and coastal seas. They are found in the upper coastal intertidal zones between land and water, which are regularly flooded by tides and surges. They are covered with salt-tolerant vegetation types, such as herbs and grasses. Sheltering from continuous intense hydrodynamic forcing by waves...
abstract 2016
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Biesheuvel, A.C. (author)
From previous engineering projects it turned out that it is difficult to determine the transmitted wave height of floating breakwaters without performing physical models or using numerical models. In this thesis it is investigated which steps should be taken during the preliminary design process in order to predict the effectiveness (wave...
master thesis 2013
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McIvor, A.L. (author), Möller, I. (author), Spencer, T. (author), Spalding, M. (author)
Coastal populations are particularly vulnerable to the impacts of extreme events such as storms and hurricanes, and these pressures may be exacerbated through the influence of climate change and sea level rise. Coastal ecosystems such as mangrove forests are increasingly being promoted and used as a tool in coastal defence strategies. There...
report 2012
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Narayan, S. (author), Suzuki, T. (author), Stive, M.J.F. (author), Verhagen, H.J. (author), Ursem, W.N.J. (author), Ranasinghe, R. (author)
A study of the effectiveness of mangroves in attenuating cyclone- induced waves was done using the SWAN 40.81 numerical model. Hydraulic parameters during extreme events and local mangrove vegetation parameters were estimated for the Kanika Sands mangrove island near the upcoming Dhamra Port in Orissa, India. Simplified generic analyses were...
conference paper 2010
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Narayan, S. (author)
A study of the effectiveness of mangroves in attenuating cyclone- induced waves was done using the SWAN 40.55MOD numerical model. Hydraulic parameters during extreme events and local mangrove vegetation parameters were estimated for the Kanika Sands mangrove island near the upcoming Dhamra Port in Orissa, India. Simplified generic analyses were...
master thesis 2009
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Beckers, J. (author), Doorn, N. (author), Van der Klis, H. (author)
The goal of the uncertainty analyses within the SBW Wadden Sea project is to find out which accuracy in HBC can be achieved, given the current state of scientific knowledge and technical instruments. Furthermore, we wish to quantify the contribution of the SWAN model and other components to the overall uncertainty in HBC. In order to answer...
report 2007
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Bleck, M. (author)
This paper intends to demonstrate the applications of artificial reefs to a broader readership concentrating on examples in coastal protection. In Germany, artificial reefs are not widely used as a coastal protection measure probably due to limited knowledge of the potential of this kind of structures. Reefs are not intended to ensure total...
report 2006
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Mol, A.C.S. (author)
Measurements have been carried out at the Paulinaschor, a salt marsh in the Westerschelde, to obtain information of the effect of vegetation on wave attenuation. The data have been analyzed. It appears that wave height is strongly reduced by the vegetation, especially for low water depths. Further analysis of the data has been done, to achieve...
report 2003
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Low, E. (author)
The main topic of this dissertation is concerned with potential sea wave attenuation by salt marsh vegetation. The overall structure of the dissertation is divided into a literature review and an experimental paper, which is further divided into an in-situ and ex-situ study. Salt marshes have some protected status within the EU and much study is...
report 2002
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Demmenie, E.A. (author), de Bruin, A.C. (author), Klaver, E. (author)
Pressure waves, that are generated when a high speed train enters a tiinnel, can cause annoyance to train passengers (rapid pressure fluctuations acting on the train) and for people living near the tunnel (micro-pressure wave). To improve train passenger comfort the effect of various pressure relieving measures (i.e. shafts and porous walls)...
report 1998
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Kortlever, W. (author)
A literature survey has been conducted on wave attenuation by vegetation with emphasis on reed which has revealed that the influence of various parameters such as the number of reed stalks per unit horizontal area and the dynamic behaviour of the stalks is not known. The two analytical solutions found in this survey are based on linearized...
report 1994
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Van der Breggen, H.M. (author), Bouwmeester, E.C. (author)
To predict the effect of a floating viscoelastic slab on the propagation and attenuation of gravity waves, a theoretical linear model has been developed. The slab has been modeled as a Kelvin-Voigt model and the fluid is assumed to be ideal. For long and short wave theory a dispersion relation for gravity waves covered by a viscoelastic slab of...
master thesis 1985
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Gerritsen, F. (author)
This study deals with the breaking of waves on coastal reefs, with special emphasis on energy dissipation (wave height attenuation), wave spectrum modification and the characteristics of wave set-up. It has an engineering perspective; its main objective is to provide the practicing engineer with much needed information on the design conditions...
report 1981
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