Two-Channel System Dynamics of the Outer Weser Estuary—A Modeling Study
In this paper, we unravel the mechanisms responsible for the development of the two-channel system in the Outer Weser Estuary. A process-based morphodynamic model is built based on a flat-bed approach using simplified boundary conditions and accelerated morphological development. The results are ana...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/9/4/448 |
| _version_ | 1827694635487592448 |
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| author | Jannek Gundlach Anna Zorndt Bram C. van Prooijen Zheng Bing Wang |
| author_facet | Jannek Gundlach Anna Zorndt Bram C. van Prooijen Zheng Bing Wang |
| author_sort | Jannek Gundlach |
| collection | DOAJ |
| description | In this paper, we unravel the mechanisms responsible for the development of the two-channel system in the Outer Weser Estuary. A process-based morphodynamic model is built based on a flat-bed approach using simplified boundary conditions and accelerated morphological development. The results are analyzed in two steps: first, by checking for morphodynamic equilibrium in the simulations and second, by applying a newly developed method that interprets simulations based on categorization of the two-channel system and cross-sectional correlation analysis. All simulations reach a morphodynamic equilibrium and develop two channels that vary considerably over time and between the simulations. Variations can be found in the location and depth of the two channels, the development of the dominant channel over time and the alteration in the dominance pattern. The conclusions are that the development of the two-channel system is mainly caused by the tides and the basin geometry. Furthermore, it is shown that the alternation pattern and period are dependent on the dominance of the tides compared to the influence of river discharge. |
| first_indexed | 2024-03-10T12:09:41Z |
| format | Article |
| id | doaj.art-7146c21f8dc642a1b71c6e6b62d14c89 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-10T12:09:41Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-7146c21f8dc642a1b71c6e6b62d14c892023-11-21T16:20:52ZengMDPI AGJournal of Marine Science and Engineering2077-13122021-04-019444810.3390/jmse9040448Two-Channel System Dynamics of the Outer Weser Estuary—A Modeling StudyJannek Gundlach0Anna Zorndt1Bram C. van Prooijen2Zheng Bing Wang3Ludwig-Franzius-Institute for Hydraulic, Estuarine and Coastal Engineering, Leibniz University Hannover, 30167 Hanover, GermanyFederal Waterways Engineering and Research Institute (BAW), 22559 Hamburg, GermanyFaculty of Civil Engineering and Geosciences, Delft University of Technology, 2628 CN Delft, The NetherlandsFaculty of Civil Engineering and Geosciences, Delft University of Technology, 2628 CN Delft, The NetherlandsIn this paper, we unravel the mechanisms responsible for the development of the two-channel system in the Outer Weser Estuary. A process-based morphodynamic model is built based on a flat-bed approach using simplified boundary conditions and accelerated morphological development. The results are analyzed in two steps: first, by checking for morphodynamic equilibrium in the simulations and second, by applying a newly developed method that interprets simulations based on categorization of the two-channel system and cross-sectional correlation analysis. All simulations reach a morphodynamic equilibrium and develop two channels that vary considerably over time and between the simulations. Variations can be found in the location and depth of the two channels, the development of the dominant channel over time and the alteration in the dominance pattern. The conclusions are that the development of the two-channel system is mainly caused by the tides and the basin geometry. Furthermore, it is shown that the alternation pattern and period are dependent on the dominance of the tides compared to the influence of river discharge.https://www.mdpi.com/2077-1312/9/4/448morphodynamicsDelft3Dlong-termtwo-channel |
| spellingShingle | Jannek Gundlach Anna Zorndt Bram C. van Prooijen Zheng Bing Wang Two-Channel System Dynamics of the Outer Weser Estuary—A Modeling Study Journal of Marine Science and Engineering morphodynamics Delft3D long-term two-channel |
| title | Two-Channel System Dynamics of the Outer Weser Estuary—A Modeling Study |
| title_full | Two-Channel System Dynamics of the Outer Weser Estuary—A Modeling Study |
| title_fullStr | Two-Channel System Dynamics of the Outer Weser Estuary—A Modeling Study |
| title_full_unstemmed | Two-Channel System Dynamics of the Outer Weser Estuary—A Modeling Study |
| title_short | Two-Channel System Dynamics of the Outer Weser Estuary—A Modeling Study |
| title_sort | two channel system dynamics of the outer weser estuary a modeling study |
| topic | morphodynamics Delft3D long-term two-channel |
| url | https://www.mdpi.com/2077-1312/9/4/448 |
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