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Chowdhury, M. Kifayath (author), Blom, A. (author), Ylla Arbos, C. (author), Schielen, R.M.J. (author)Climate change is responsible for global shifts in precipitation patterns and an overall in-crease in global temperatures. The transi-tions are anticipated to modify the river hydro-graph and sea level. The changes to the hy-drograph are also likely to influence sediment flux. These alterations imply shifts in both up-stream and downstream...abstract 2024
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Liptiay, E.J.A. (author), Blom, A. (author), Sloff, C.J. (author)Over the past century, the main channel of the Waal has experienced erosion of approx-imately 1-2 metres (Ylla Arb´os et al., 2021; Chowdhury et al., 2023). This erosion leads to various problems such as instability of struc-tures or disruption to shipping. To address this ongoing degradation, a potential solution is the implementation of...abstract 2024
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Dercksen, J.A. (author), Stancanelli, L.M. (author), Trimbos, Krijn B. (author), Blom, A. (author)River restoration is an established method for the rehabilitation of river ecosystems in order to combat the current declines of freshwater biodiversity (Wohl et al., 2005; WWF, 2022). The urgency of restoration is recognized internationally, as the IUCN has proclaimed 2021-2030 to be the ‘Decade on Ecosystem Restoration’ (Cooke et al., 2022)....abstract 2024
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Ylla Arbos, C. (author), Schielen, R.M.J. (author), van Vuren, Saskia (author), Snoek, Yvo (author), Blom, A. (author)Channel adjustment in engineered rivers is often associated with channel bed incision (e.g., Chowdhury et al., 2023, Czapiga et al., 2022a, 2022b, Ylla Arbós et al., 2021). Channel bed incision reduces the stability of in-river structures, exposes river-crossing cables and pipelines, and the spatial variability of channel bed incision due to...abstract 2024
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Gautam, K. (author), Wolf, M.E. (author), Bogaard, T.A. (author), Blom, A. (author)The dynamics of the bifurcating Karnali river in the western plains of Nepal and India is governed by the geomorphological processes in an alluvial fan. The dynamic branches showcase a notable degree of braiding, dominant channel switching and unequal discharge partitioning. Since recent switching of the dominant channel of Karnali system...abstract 2024
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- Chowdhury, M. Kifayath (author), Blom, A. (author), Ylla Arbos, C. (author), Verbeek, Merel C. (author), Schropp, Max H.I. (author), Schielen, R.M.J. (author) abstract 2023
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Blom, A. (author), Schielen, R.M.J. (author)Typically the time scale of river response to change of the controls (i.e., flow duration curve, sediment flux, and sea level) is of the order of decades to centuries. Understanding temporal change and, in particular, abrupt change in channel response is increasingly important in engineered river systems, as abrupt change may negatively affect...abstract 2023
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Chowdhury, M. Kifayath (author), Blom, A. (author), Ylla Arbos, C. (author), Schielen, R.M.J. (author)River bifurcations divide the water and sediment over two downstream branches or bifurcates. As the changing climate adjusts the boundary conditions (i.e., base level, hydrograph, and sediment flux) for bifurcations, it will affect their flow and sediment partitioning over the bifurcates. Our objective is to provide insight into the response of...abstract 2023
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Stancanelli, L.M. (author), Dercksen, J.A. (author), Wens, A. (author), Blom, A. (author)A monitoring technique capable of assessing the status of an aquatic ecosystem is needed for reversing negative trends in river biodiversity. Recently, an innovative technique for detecting the degree of biodiversity based on environmental DNA traces (mucus, shed skins etc.) has been proposed (Carraro et al., 2020). This eDNA-based biomonitoring...abstract 2023
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Ylla Arbos, C. (author), Blom, A. (author), Sloff, C.J. (author), Schielen, R.M.J. (author)Climate change puts pressure on river systems, as it increasingly alters the river controls. Engineered rivers with a fixed planform respond to climate change and human intervention by adjusting the channel slope and bed surface grain size distribution. This response often consists of channel bed incision, over hundreds of kilometres, and during...abstract 2023
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Gautam, K. (author), Roebroeck, M.E. (author), Bogaard, T.A. (author), Blom, A. (author)Rivers flowing from the highlands to the lowlands, characterize the Terai Arc Landscape (TAL) in Nepal and India, but also the neighbouring region in Bhutan. The sudden change in slope results in deposition of nutrient-rich sediment, which forms large alluvial or fluvial fans that enhance biodiversity and economic activities in the region. Our...abstract 2023
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- Gautam, K. (author), Roebroeck, M.E. (author), Bogaard, T.A. (author), Blom, A. (author) abstract 2023
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Chowdhury, M. Kifayath (author), Blom, A. (author), Ylla Arbos, C. (author), Verbeek, Merel C. (author), Schropp, Max H.I. (author), Schielen, R.M.J. (author)Sediment transport capacity and supply of sediment to a river channel increase significantly during peak flow events. Here we study how a river bifurcation system (partitioning water and sediment over its downstream branches) responds to peak flow events. We focus on the Pannerdense Kop bifurcation in the Dutch Rhine River, an engineered system...abstract 2022
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- Czapiga, Matthew J. (author), Blom, A. (author), Viparelli, Enrica (author) abstract 2021
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- Ylla Arbos, C. (author), Blom, A. (author), Schielen, R.M.J. (author) abstract 2021
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Arkesteijn, L. (author), Labeur, R.J. (author), Blom, A. (author)When rivers are forced by statistically invariant boundary conditions (i.e. an upstream water discharge, upstream sediment discharge and downstream base level that fluctuate around constant mean values), and are not subject to any forcing with a temporal trend (e.g. no uplift/subsidence, no sea-level rise), they tend to a morphodynamic...abstract 2017
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Chavarrias Borras, V. (author), Ottevanger, W. (author), Labeur, R.J. (author), Blom, A. (author)The set of equations used in modelling river morphodynamics needs to be (at least) wellposed to be representative of the real natural phenomenon. As we deal with a time dependent process the solution needs to be wave-like to be well-posed. In other words, the solution must have a domain of dependence and of...abstract 2017
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Emmanouil, A. (author), Blom, A. (author), Viparelli, Enrica (author), Frings, R. (author)Sediment management measures are becoming increasingly popular as they are considered sustainable from both economic and environmental point of view. For example, aimed at counteracting river bed degradation, sediment nourishments have been carried out in the German reaches of the Rhine river while a...abstract 2017
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Siele, Meles (author), Blom, A. (author), Frings, R. (author), Viparelli, Enrica (author)The main objective of this research is to improve our understanding of the relative contribution of the causes of long-term bed degradation in Rhine and other degrading rivers. That is, the research is intended to quantify past channel adjustment processes, mainly bed degradation and bed surface coarsening...abstract 2017