Publicaties

Improving operational flood forecasting through data assimilation

Auteur: Weerts, A.H. (2009)

The present report summarizes the research plan and progress of the PhD project "Improving Operational Flood forecasting through Data Assimilation" carried out within the Flood Control 2015 program. This project focuses on reduction and quantification of uncertainties in flood forecasting through data assimilation in distributed hydrological models.

The scientific validation of the hydrographic survey policy of the Netherlands Hydrographic Office, Royal Netherlands Navy

Auteurs: Dijk, T.A.G.P. van; Tak, C. van der; Boer, W.P. de; Kleuskens, M.H.P.; Doornenbal, P.J.; Noorlandt, R.P.; Marges, V.C. (2011)

The Netherlands Hydrographic Office has requested Deltares to validate their re-survey policy for the Netherlands Continental Shelf based on scientific methods. Controlling parameters in the validation are the natural morphodynamics of the North Sea bed and the grounding risks of shipping. Deltares developed an objective method to analyse the seabed morphodynamics from time series of echo sounding data. The quantification of the vertical nodal dynamics of the Netherlands Continental Shelf (on a 25 x 25 m resolution) reveals that regions with rhythmic bedforms are particularly dynamic. Detailed analyses of these dynamic zones provide the growth and migration of individual bedforms. In almost the entire Southern Bight, observed average migration rates are 0 to 5 m/yr, except near Texel, where average migration rates are up to 19 m/yr. The University of Twente performed sand wave modelling to explain the potential impact of environmental conditions on the shape and dynamics of sand waves. In collaboration with MARIN, grounding danger was quantified for the Netherlands Continental Shelf (1 x 1 km resolution). Both the morphodynamics and grounding danger were used in an overlay to validate and optimise the existing re-survey policy of the Netherlands Hydrographic Office.

Progress report 2010 on the nourishment on the Galgeplaat : morphological and ecological developments, 15 months after the construction

Auteurs: Holzhauer, H.; Werf, J.J. van der; Dijkstra, J.T.; Morelissen, R. (2010)

The Galgeplaat is very susceptible to erosion and as a result its elevation is being continually lowered. It was decided to carry out a nourishment on the Galgeplaat. The goal of the nourishment is to stop the loss of intertidal area (temporarily). The nourishment is being extensively monitored for a period of three years.

Determination of good environmental status : implementation of the Marine Strategy Framework Directive for the Dutch part of the North Sea (background document 2 of 3)

Auteurs: Prins, T.C.; Slijkerman, D.M.E.; Schipper, C.A.; Heuvel-Greve, M.J. van den (2011)

Evaluatie van een waterturbinepilot (Tocardo T50 2800u inshore)

Auteur: Talmon, A.M. (2010)

Evaluatie van pilotmetingen die zijn uitgevoerd aan de tweebladige horizontale-as waterturbine genaamd Tocardo 2800.De werking van een turbine is getoests voordat deze werd ingezet bij grootschalige opwekking van stromingsenergie.

Verzilting van het Nederlandse grondwatersysteem : model versie 1.3

Auteurs: Oude Essink, G.H.P.; Baaren, E. van (2009)

Het grondwatersysteem in het Nederlandse kustgebied wordt bedreigd door de intrusie van zout grondwater als gevolg van natuurlijke processen en antropogene activiteiten Voor dit onderzoek zijn met behulp van het ontwikkelde modelinstrumentarium kaarten gemaakt voor de veranderingen in chlorideconcentraties aan de onderkant van de deklaag, in kwel en in zoutvracht voor de autonome case zonder klimaatverandering en de KNMI ’06 klimaatscenario’s G, G+, W en W+ voor de jaren 2020, 2050 en 2100.

ANIMO-RT3D 1.0 on-line koppeling van ANIMO en RT3D voor dynamische modellering van nutriëntentransport op regionale schaal

Auteurs: Janssen, G.M.C.M.; Grift, B. van der; Griffioen, J.; Groenendijk, P. (2009)

In dit rapport wordt de ANIMO-RT3D koppeling beschreven en de reden van online koppeling hiervan.