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|High resolution topo-bathymetric and flow measurements and 2D-hydrodynamic numerical modelling to evaluate the effects of the deepening of the navigation channel in the Western Scheldt|
Plancke, Y.; Vertommen, D.; Beirinckx, K.; Vos, G. (2012). High resolution topo-bathymetric and flow measurements and 2D-hydrodynamic numerical modelling to evaluate the effects of the deepening of the navigation channel in the Western Scheldt, in: Dorst, L.L. et al. Taking Care of the Sea: conference handbook of Hydro12, 13-15 November 2012, SS Rotterdam, Rotterdam, the Netherlands. pp. 215-221
In: Dorst, L.L. et al. (2012). Taking Care of the Sea: conference handbook of Hydro12, 13-15 November 2012, SS Rotterdam, Rotterdam, the Netherlands. Hydrographic Society Benelux: Rotterdam. ISBN 978-90-365-3470-3. 356 pp., meer
Environments > Aquatic environment > Marine environment
Hydraulica en Sediment > Hydrodynamica > Getij
Hydraulica en Sediment > Sediment > Baggeren en storten
Literatuur- en desktoponderzoek
Measurement > Flow measurement
Surveys > Hydrographic surveys > Bathymetric surveys
Topographic features > Channels > Navigational channels
ANE, Nederland, Westerschelde [Marine Regions]
To evaluate the success of this new disposal strategy an extensive monitoring programme was set up . Frequent (2-weekly up to two-monthly) topo-bathymetric surveys using multibeam echo sounding are performed in combination with seasonal sedimentation-erosion measurements using both RTK (intertidal) and singlebeam (subtidal). Also flow velocities on 10 transects, each consisting of 4 measurements points, in the shallow subtidal and the intertidal zone near the disposal locations are monitored using ADCP’s (Nortek – AquaDopp). The ADCP devices on the intertidal zone are dug in the sandbar and look upward, allowing maximal vertical resolution when flooded during the tidal cycle.
Parallel with the monitoring, a validated 2D-numerical hydrodynamic model is used to evaluate the effects of the disposal of sediments. Every three months, a simulation is performed using the most recent topo-bathymetry. This allows an evaluation of the changes in flow velocities and flow patterns near the disposal areas.
A special “protocol” (see Depreiter et al., 2012) with several criteria was developed to evaluate the monitoring results and the success of the new disposal strategy.
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