Found 41 Outputs - Page 3 of 5
Application of a line laser scanner for bed form tracking in a laboratory flume
A new measurement method for continuous detection of bed forms in movable bed laboratory experiments is presented and tested.
23/03/2018 by Timo de Ruijsscher et al.
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Morphological patterns at the intake of a side channel over an oblique sill
Qualitative comparison of the river bed dynamics in the side channel of the longitudinal dam and the flat bed conditions in the scale model at low water level.
05/09/2018 by Timo de Ruijsscher et al.
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Rivierbodemdynamiek meenemen in het ontwerp van maatregelen
In the Dutch Waal river, the bed topography of the navigational channel is measured bi-weekly. In a so-called TKI-project (cooperation between Rijkswaterstaat, HKV and Twente University) we use this data to link morphological changes to specific interventions in the river. This is not a straightforward as it may seem, because the morphological changes are the sum of small scale changes due to e.g. the presence of groynes, medium scale changes coming from the intervention and large scale changes coming from engineering measures in the (far) past to which the profile is still adjusting. A so-called wavelet analysis can be used to disentangle these different scales and enables us to focus only on the morphological changes due to the intervention. This improves river operations and maintenance and in the future also to facilitate the planning of new measures to minimize morphological impact.
01/10/2020 by Pepijn van Denderen et al.
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From implementation towards maintenance: sustaining collaborative initiatives for integrated floodplain management in the Netherlands
this article explores how stakeholders shape collaborative initiatives aimed at maintaining multifunctional floodplains.
06/07/2016 by Jan Fliervoet et al.
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Ill posedness in modelling two-dimensional morphodynamic problems
We reveal the existence of two additional mechanisms under which the 2D system of equations does not provide a unique solution.
11/04/2019 by Victor Chavarrias et al.
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On evaluating social learning outcomes of serious games to collaboratively address sustainability problems: A Literature Review
This systematic review examines how serious games are evaluated in relation to social learning.
12/11/2018 by Robert-Jan den Haan et al.
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Uncertainty obscures Room for the River results for now
Models predict water level decrease, but measurements are too uncertain for now. This reveals a challenge for validation model predictions of human intervention
14/07/2021 by Koen Berends et al.
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Towards efficient uncertainty quantification with high-resolution morphodynamic models
An alternative approach to lower the computational cost of uncertainty analysis. Application to an idealized example for channel siltation in a harbour.
30/06/2019 by Koen Berends et al.
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Insight into the local bed-level dynamics to assist management of multi-funtional rivers
River discharge fluctuations cause bed-level variations at various scales, resulting from spatial gradients in the river’s geometry. Insight into these bed-level variations and their relation to discharge fluctuations can help to predict and prevent the formation of local bottlenecks. In this paper, we use bi-weekly bed-level measurements of the river Waal to estimate the bed-level variations related to the river discharge.
11/02/2021 by Pepijn van Denderen et al.
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Laying bare systemic river bed changes in the river Rhine
It is important to link cause-and-effect relations between bed response and their dominating triggers. This is particularly important in highly-engineered navigable rivers, where multiple influences from close-by and further away can obscure the dominating causes of local bed level changes, and thereby possibly point in the wrong direction when it comes to sustainable river management practices.
11/02/2021 by Pepijn van Denderen et al.
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