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The development of the mean sea level, tidal dynamics and intertidal areas with human interventions in the Western Scheldt estuary, the Netherlands
van Wissen van Veen, L.J. (2021). The development of the mean sea level, tidal dynamics and intertidal areas with human interventions in the Western Scheldt estuary, the Netherlands. MSc Thesis. Wageningen University : Wageningen. vi, 32 pp.
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| Beschikbaar in | Auteur |
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Documenttype: Doctoraat/Thesis/Eindwerk
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| Author keywords |
Intertidal areas, mean sea level, estuary, tidal dynamics, morphology, Western Scheldt, human interventions |
| Auteur | | Top |
- van Wissen van Veen, L.J.
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| Abstract |
Estuaries are located at the transition from a river to the ocean and serve many different roles. External perturbations such as human interventions can have a large impact on the functioning of the estuarine system. For reasons of data availability, this study uses the Western Scheldt estuary in the Netherlands as an example to investigate impacts of human interventions. The first objective was to investigate if trends in mean sea level, tidal dynamics and the morphological development of the intertidal areas were continuous or that trend breaks occurred. The second objective was to create an overview of the local and large-scale human interventions that occurred in the estuary in between 1950-2020 to simplify linking sudden changes in these trends to human interventions. The trends in tidal dynamics were examined by investigating tidal range, high and low water levels of four measurement stations. Trends in morphological changes of the intertidal areas were examined by investigating changes in surface area, sediment volume, average and maximum height of three intertidal areas that were distributed over the estuary. The Pettitt test was used to detect change points within the trends and a timeline was created to gain an overview of the human interventions. In addition, context and perspectives of other studies were used for verification of the links found by this research. Results of this study show that several change points occurred within the trends of the mean sea level, tidal dynamics and morphology of the intertidal areas. In addition, all change points coincided with the timing of specific human interventions that are related to maintaining and improving navigability. In conclusion, this study gives insights in the continuity of several trends that occurred in the Western Scheldt and proposes a simple and effective method that makes possible links between sudden changes in trends and human interventions visible. This method can be used as starting point of research and can also be applied to case studies of other regions. |
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