Development of tidal watersheds in the Wadden Sea

Conference paper (2011)
Department
Hydraulic Engineering (CEG) (TU Delft)
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Published Date

06-09-2011

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Source:

RCEM 2011: Proceedings of the 7th IAHR Symposium of River, Coastal and Estuarine Morphodynamics, Beijing, China, 6-8 September 2011

Faculty

Civil Engineering and Geosciences

Department

Hydraulic Engineering

Abstract

The Wadden Sea consists of a series of tidal lagoons which are connected to the North Sea by tidal inlets. Boundaries to each lagoon are the mainland coast, the barrier islands on both sides of the tidal inlet, and the tidal watersheds behind the two barrier islands. Behind each Wadden Island there is a tidal watershed separating two adjacent tidal lagoons. The locations of the tidal watersheds in the Wadden Sea are not fixed. Especially after a human interference in one of the tidal lagoons, a tidal watershed can move and thereby influence the distribution of area between the lagoons. This appears to be important for the morphological development in not only the basin in which the interference takes place, but also in the adjacent basins. This paper describes theoretical analyses and numerical modelling aimed at improving the insights into the location of the tidal watersheds, their movements, and the impact of the movements of tidal watersheds on the morphological development of a multi-basin system like the Wadden Sea.

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