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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Tidal flow and residual flow in the Ems estuary De Jonge, V.N. (1992). Tidal flow and residual flow in the Ems estuary. Est., Coast. and Shelf Sci. 34(1): 1-22. https://dx.doi.org/10.1016/S0272-7714(05)80123-4 In: Estuarine, Coastal and Shelf Science. Academic Press: London; New York. ISSN 0272-7714; e-ISSN 1096-0015, meer Is gerelateerd aan: De Jonge, V.N. (1992). Tidal flow and residual flow in the Ems estuary, in: De Jonge, V.N. Physical processes and dynamics of microphytobenthos in the Ems estuary (The Netherlands). pp. 23-41, meer

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Beschikbaar in	Auteur
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Trefwoorden

Motion > Water motion > Water currents > Tidal currents Residual flow ANE, Germany, Ems Estuary [Marine Regions] Marien/Kust

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Auteur		Top
De Jonge, V.N., meer

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Abstract

Tidal water flow and residual tidal flow between and within channels was ascertained for 20 cross sections in the Ems estuary (The Netherlands). The tidal prism of the estuary is approximately 1 × 109 m3. In the middle reaches the residual ebb and flood transports over the cross sections varied between 1 and 18% of the tidal water transport, increasing to 43% near the river proper and near the tidal watersheds. The overall mean is c. 11%. Tidally averaged residual current velocities in the cross sections varied from less than 0·01 to 0·33 m s−1 with an overall mean of 0·06 m s−1. The distribution of the tidally averaged residual currents along and over the cross sections studied corresponds very well with the results of a horizontally two-dimensional water transport simulation model. The data from this study show that the distribution of large-scale (between channels) and small-scale (within channels) residual currents is reflected in the local cross-sectional bathymetry. It is hypothesized that deviations from a good correspondence between the location of residuals and bathymetry indicate a hydraulically unstable situation, which implies a changing local morphology.

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