Monika Donner, Erik Pasche, Edgar Nehlsen


Tidal marsh-watercourses form a significant link between marine and fluvial environment. As consequence bi-directional forces due to asymmetric tides and inland runoff deform morphodynamic processes with presence of cohesive and organic sediment. In combination with the high inter-tidal area proportion and additional anthropogenic deformations special requirements for the long-term approach restrict existing methods. This paper exposes significant processes in tidal marsh-watercourses based on a research study. The identified processes were integrated into a specified long-term approach taking these special requirements into account. By using a numerical model the range of uncertainty for different impacts were considered and results in a long-term riverbed evolution.


Long-term approach; morphodynamic processes; cohesive sediments; marsh-watercourses; storm surge barriers; suspended sediment influx

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Casati, B., Wilson, L. J. 2007. A New Spatial-Scale Decomposition of the Brier Score: Application to the Verification of Lightning Probability Forecasts, Meteorological Research Division, Environment Canada, Monthly Weather Review 135, Dorval, Quebec, pp. 3052-3069.

De Vriend, H. J., Zyserman, J., Nicholson, J., Roelvink, J. A., Pechon, P., Southgate, H. N. 1993. Medium–term 2DH coastal area modelling, Coastal Engineering, Vol. 21, pp.193-224, Amsterdam.http://dx.doi.org/10.1016/0378-3839(93)90050-I

De Vriend, H. J. 2001. Long-Term morphodynamic prediction, in Coastal and Estuarine Morphodynamics, Springer-Verlag Berlin Heidelberg, pp. 163-190.

Donner, M., Pasche, E., Nehlsen, E. 2009. Impact of storm surge barriers on morphodynamic processes in tidal lowland-rivers, Conference Proceedings IAHR, Vancouver, Canada.

Doyle, M. W., Shields, D., Boyd, K. F., Skidmore, P. B., Dominick, D. 2007. Channel-Forming discharge selection in river restoration design, Journal of Hydraulic Engineering, Vol. 133, No. 7. http://dx.doi.org/10.1061/(ASCE)0733-9429(2007)133:7(831)

Dronkers, J. 1986. Tidal Asymmetry and Estuarine Morphology, Netherlands Journal of Sea Research, No. 20 (2/3), pp.117-131. http://dx.doi.org/10.1016/0077-7579(86)90036-0

Dronkers, J., Van Leussen, W. 1988. Physical processes in Estuaries, Springer Verlag Berlin Heidberg. http://dx.doi.org/10.1007/978-3-642-73691-9

EC 2006/60. 2000. Water Framework Directive for Community Action in the field of water policy, Official Journal of the European Communities, L327/1, Brussels.

EC 2007/60. 2007. Directive of European Parliament and of the Council on the assessment and management of flood risks, Brussels.

Greenberg, R., Maldonada, J. 2004. Diversity and endemism in tidal-marsh vertebrates, Studies in Avian Biology, No. 32, pp. 32 – 37.

Junge, I., Wikens, J., Hoyme, H., Mayerle, R. 2005. Modelling of Medium-Scale Morphodynamics in a Tidal Flat Area in the South-Eastern German Bight, Die Küste, No. 69, pp. 277–310.

Latteux, B. 1995. Techniques for Long-Term morphological simulation under tidal action, Marine Geology, Volume 126; pp.129-141.http://dx.doi.org/10.1016/0025-3227(95)00069-B

Rubbert, S. 2007. Entwicklung eines Langfristgewässergütemodells für flache Standgewässer, Dissertation, Institut für Wasserbau und Wasserwirtschaft, RWTH Aachen.

Salomon, J. C., Allen, G. P. 1983. Role sedimentologique de la mare dans les estuaires a fort marnage, Compagnie Français de Petroles, Notes and Memoires 18, pp. 35–44.

Schonlau, H. U. 2007. Zeitskalenübergreifende Berücksichtigung von partikulärem Stofftransport in einer Langfrist-Gewässergüteprognose für Fließgewässer, Dissertation, Fakultät für Bauingenieurwesen, RWTH Aachen.

Schrage, N., Antanaskovic, D., Jung, T., Pasche, E. 2009. KALYPSO – An open source software tool for flood studies in rivers, Conference Proceedings International Conference on Hydroinformatics, Concepción, Chile.

Schweim, C. 2005. Modellierung und Prognose der Erosion feiner Sedimente, Dissertation, Fakultät für Bauingenieurwesen, RWTH Aachen.

Steijn, R. C. 1992. Input Filtering Techniques for Complex Morphological Models, Delft Hydraulics Report, H 824.53.

Temmerman, S., Gover, G., Wartel, S., Meire, P. 2004. Modelling estuarine variations in tidal marsh sedimentation, Marine Geology, No 212, Elsevier, Amsterdam.

Van Rijn, L. C. 1993. Principles of sediment transport in rivers, estuaries and coastal seas, Aqua Publications, Amsterdam, pp. 11.9 – 11.14.

Van Rijn, L. C., Grasmeijer, B., Sutherland, J., Pan, S., Sierra, J. P., Van Rijn, B., Ruessink, B. G., Mulder, J. P. 2002. Simulation of nearshore hydrodynamics and morphodynamics on the tidal scale of storms and seasons using process-based profile models, COAST3d-EGMOND, Aqua Publications, Amsterdam, pp. 213-233.

Zanke, U. C. 1982. Grundlagen der Sedimentbewegung, Springer Verlag, Berlin Heidelberg. PMid:7062987http://dx.doi.org/10.1007/978-3-642-68660-3

Zanke, U. C., Hirschhäuser, T. 2001. Morphologische Langfristprognose für das System Tidebecken- Außensände am Beispiel Sylts und der Dithmarscher Bucht, Die Küste, No. 64, pp.127-160.

Zanke, U. C., Hirschhäuser, T. 2004. Langfristige Sedimentdynamik des Systems Tidebecken-Ebbdelta unter besonderer Berücksichtigung von verändertem Seegang und Wasserständen, Die Küste, No. 68, pp.201-248.

Zanke, U. C. 2008. On applicability of morphodynamic acceleration in morphodynamic simulations, Mitteilungen des Instituts für Wasserbau und Wasserwirtschaft der TU Darmstadt, Heft 144.

DOI: http://dx.doi.org/10.9753/icce.v32.sediment.71