Searched for: subject:"mud"
(1 - 20 of 118)

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Gerritsma, Isabel (author)
Degrading mangrove forests and coinciding erosive coastlines is an urgent global concern. Mangroves are essential for their interaction with hydrodynamic and sediment processes at mangrove-mud coasts. Earlier on, solutions were sought in building ’hard’ structures, such as concrete sea walls, to lower incoming wave energy and enhance...
master thesis 2020
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Bakker, Floor (author)
To exploit its socio-economic functions, engineering measures are regularly applied in estuaries. Estuaries are, however, known to be very complex systems. Stemming from this complexity is the generation of a so-called estuarine turbidity maximum (ETM), which poses great siltation problems to the engineering measures. An engineering measure,...
master thesis 2020
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Shakeel, A. (author), Kirichek, Alex (author), Chassagne, C. (author)
Natural mud usually exhibits non-Newtonian rheological behaviors like viscoelasticity, thixotropy and yield stress. The history of each mud sample is also an important factor influencing the rheological behavior, as the state of the clay fabric – for a same composition – is dependent on the shear stresses experienced previously by the sample....
journal article 2020
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Kirichek, Alex (author), Rutgers, Ronald (author)
As regular maintenance and relocation of sediment deposits are highly expensive, Port authorities seek more efficient solutions for reducing the costs and CO2 emissions of maintenance dredging. One solution, water injection dredging (WID), is carried out for maintaining the sediment deposits which predominantly consist of clay and silt. WID has...
journal article 2020
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Le, Hoang-Anh (author), Gratiot, Nicolas (author), Santini, William (author), Ribolzi, Olivier (author), Tran, Duc (author), Meriaux, Xavier (author), Deleersnijder, E.L.C. (author), Soares-Frazão, Sandra (author)
The Mekong river is one of the largest rivers in the world, which flows through six countries of Southeast Asia (China, Myanmar, Laos, Thailand, Cambodia and Vietnam). Its hydro-sedimentary regime is changing rapidly, as a consequence of a regional shift of land use (agriculture, road, etc.), damming, sand mining and climate changes, among...
journal article 2020
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Zander, F. (author), Heimovaara, T.J. (author), Gebert, J. (author)
Purpose: The microbial turnover of sediment organic matter (OM) in ports and waterways impacts water quality, sonic depth finding and presumably also rheological properties as well as greenhouse gas emissions, especially if organic carbon is released as methane. As a consequence, sediment management practices as a whole are affected. This...
journal article 2020
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Shakeel, A. (author), Kirichek, Alex (author), Chassagne, C. (author)
Mud sediments can exhibit a complex rheological behaviour particularly a thixotropic character or structural recovery after breakup due to the presence of organic matter/biopolymer. Such biopolymers can lead towards the development of flocculated structures having multiple length scales which are sensitive to shearing rate and history. In...
journal article 2020
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Kirichek, Alex (author), Shakeel, A. (author), Chassagne, C. (author)
Purpose: Fluid mud layers can be substantial in waterways and they can jeopardise navigation when the ship’s keel comes in its vicinity. The nautical bottom has therefore to be properly characterised. Mud density and yield stress are used as criteria to characterise the nautical bottom. For a decade, measuring these parameters in situ has...
journal article 2020
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van Maren, D.S. (author), Vroom, J. (author), Fettweis, M. (author), Vanlede, J.D.S.M. (author)
Despite availability of a large amount of observational data and modelling studies, the mechanisms maintaining the Turbidity Maximum in the Belgian-Dutch coastal zone around the port of Zeebrugge (Belgium) are insufficiently understood. In order to better understand the dynamics of this turbidity maximum we examine the role of baroclinic ...
journal article 2020
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Shakeel, A. (author), Kirichek, Alex (author), Chassagne, C. (author)
Yield stress materials have a wide range of commercial applications. Yet, the suitable way of determining the yield stress values of a given material has been the subject of many studies and debates. Yield stresses are dependent on the material (shear) history and composition, which implies that robust protocols should be developed to study...
journal article 2020
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Ge, Jianzhong (author), Chen, Changsheng (author), Wang, Zhengbing (author), Ke, Keteng (author), Yi, Jinxu (author), Ding, Ping Xing (author)
Fluid mud (FM) is a unique sedimentary feature in high-turbidity estuaries, where it can make a rapid contribution to morphodynamics. Insufficient field measurements and fixed-point monitoring lead to deficient understandings of the formation, transport, and breakdown of the FM under extreme weather conditions. A field survey was conducted in...
journal article 2020
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Winterwerp, J.C. (author), Albers, Thorsten (author), Anthony, Edward J. (author), Friess, Daniel A. (author), Gijón Mancheño, A. (author), Moseley, Kene (author), Muhari, Abdul (author), Tas, S.A.J. (author), Tonneijck, Femke H. (author)
Mangrove-mud coasts across the world erode because of uninformed management, conversion of mangrove forests into aquaculture ponds, development of infrastructure and urbanization, and/or extraction of groundwater inducing land subsidence. The accompanied loss of ecosystem values, amongst which safety against flooding, has far reaching...
journal article 2020
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Borsje, Ruben (author)
Demak is a regency within the province of Central Java, Indonesia, with a mud-mangrove coast bordering the Java Sea. The region is facing a rapid retreat of the coastline, threatening the livelihood of a large part of the population. The main cause of the erosion is the deforestation of the green belt of mangroves. This has disturbed the...
master thesis 2019
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Bax, Rutger (author)
This thesis research has been conducted to analyse the sediment dynamics in the Yangon Estuary, in order to define the cause for the sedimentation in Monkey Point Channel. For years, Yangon Port has been suffering from limited accessibility due to the sedimentation in the channel and currently daily dredging is required in order to let ships...
master thesis 2019
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Zhou, F. (author), Giannakis, Iraklis (author), Giannopoulos, Antonios (author), Slob, E.C. (author)
In the phase of oil drilling, mud filtrate penetrates into porous formations and alters the pore fluid properties. This complicates well logging exploration, and inevitably gives rise to shift in reservoir estimation. Logging engineers deem mud invasion a harm and attempt to eliminate its impact on logging data exploration. However, from our...
conference paper 2019
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Shakeel, A. (author), Kirichek, Alex (author), Chassagne, C. (author)
Purpose: An innovative way to define navigable fluid mud layers is to make use of their rheological properties, in particular their yield stress. In order to help the development of in situ measurement techniques, it is essential that the key rheological parameters are estimated beforehand. Is there only one yield stress? In which shear rate...
journal article 2019
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Shakeel, A. (author), Kirichek, Alex (author), Chassagne, C. (author)
Mud is a cohesive material which contains predominantly clay minerals, water, organic matter and some amounts of silt and sand. Mud samples can have complex rheological behaviour, displaying viscoelasticity, shear-thinning, thixotropy and yield stress. In this study, influence of organic matter on the rheological behaviour of different mud...
journal article 2019
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Vanlede, J.D.S.M. (author), Dujardin, Arvid (author), Fettweis, Michael (author), Van Hoestenberghe, Thomas (author), Martens, Chantal (author)
This paper presents the mud dynamics in the harbor basin of Zeebrugge in the Southern North Sea based on an analysis of field data. Mud is typically transported into and within the harbor basin through advection of suspended particulate matter (SPM). Three important timescales have been identified. On the intratidal timescale, sediment import...
journal article 2019
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van Domburg, Tim (author)
master thesis 2018
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Speerstra, Han (author)
Bed roughness is an important parameter for the prediction of sediment transport as well as calculating flow conditions near the bed. Numerical models are extensively used to make these predictions. In these models it is fundamental to have proper values for bed roughness. The bed roughness is being estimated using a dataset from an ongoing...
master thesis 2018
Searched for: subject:"mud"
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