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Research Outputs

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Found 41 Outputs - Page 1 of 5

Monitoring floodplain vegetation change at river-reach scale

A method to quickly detect where floodplain vegetation changes occur and to which vegetation class did they change.

24/07/2021 by Wimala van Iersel 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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Contains: Publication open access

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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Disentangling spatial scales of morphological development

The river bed continuously changes on various spatial and temporal scales. Migrating river dunes are an example of local and relatively fast change. At the same time, engineering measures from the last decades cause the river bed to degrade to the present date. To be able to predict the development of the river bed, it is important to distinguish between and disentangle the various spatial and temporal scales.

13/02/2020 by Pepijn van Denderen et al.

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Exploring place attachment and visions of nature, of water-based recreationists

Major river interventions can greatly affect stakeholders and their connection to the river landscape. We show how recreationists’ perceptions of nature and landscape influence their expectations about a pilot intervention in the Waal river.

16/01/2018 by Wessel Ganzevoort et al.

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Classification of river floodplain low vegetation using seasonal drone imagery

A practical solution for monitoring areas of a few kilometers and derive land cover classification with high accuracies.

19/07/2019 by Wimala van Iersel et al.

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Contains: Dataset upon request Publication open access

Understanding actor perspectives regarding challenges for integrated river basin management

People use different world views when addressing problems, often resulting in different views on both the problem and its solution. For this paper, we explored management challenges and actor perspectives on these in Dutch integrated river basin management.

09/08/2018 by Robert-Jan den Haan 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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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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Contains: Dataset access Model or tool access Publication open access

Flood hazard reduction from automatically applied landscaping measures in RiverScape

Seven flood reduction measures along the Waal river were ranked according to the water level reduction and the displaced material for their implementation.

01/03/2018 by Menno Straatsma et al.

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Contains: Model or tool upon request

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