APPLYING AN ANALOGUE FOR A CONCEPTUAL MODEL FOR THE DEVELOPMENT OF A MEGA NOURISHMENT

Fernanda Achete, Arjen Luijendijk

Abstract


This paper discusses the effectiveness of a mega-nourishment project. Mega-nourishment is a new technology for beach nourishment that has recently been developed. It arises as an alternative to beaches where a structural erosion problem is observed and there is the need for continuously nourishments works. A pilot project was implemented near The Hague (The Netherlands) in October 2011, called the Sand Engine [Mulder 2000], however the impacts of such project are widely unknown. From this perspective the study of a natural coastal area that was subjected to similar conditions can generate know how about the impacts of such a project. One of these natural examples is Ameland: one of the Frisian Islands in the Wadden Sea. Ameland experienced large natural nourishment coming from the ebb tidal delta. The nourishment shape and magnitude were in the same order of magnitude of to the Sand Engine project, leading to a comparison point. In the Ameland case this nourishment occurred on 1990`s and on 1993 achieved a similar shape to the Sand Engine pilot project and currently almost all the sediment is already spread. So from the natural case we can assume that the Sand Engine is going to take around 2 decades to spread all the nourished sediment, a special care should be taken in the down-drift coast to avoid early erosion.

Keywords


beach nourishment; data analysis

References


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

Lesser, G. R., J. A. Roelvink, J. A. T. M. van Kester, et al. (2004). "Development and validation of a three-dimensional morphological model." Coastal Engineering 51(8-9): 883-915.http://dx.doi.org/10.1016/j.coastaleng.2004.07.014

Roelvink, J. A. (2006). "Coastal morphodynamic evolution techniques." Coastal Engineering 53(2-3): 277-287.http://dx.doi.org/10.1016/j.coastaleng.2005.10.015

Roelvink, J. A., L. C. van Rijn and R. C. Steijn (1999). Morphodynamic simulations of the tidal inlet "Zeegat van Ameland".

Stive, M. J. F., Z. B. Wang and V. C. Lakhan (2003). Chapter 13 Morphodynamic modeling of tidal basins and coastal inlets. Elsevier Oceanography Series, Elsevier. Volume 67: 367-392.

van de Kreeke, J. (1978). "Mass transport in a coastal channel, Marco River, Florida." Estuarine and Coastal Marine Science 7(3): 203-214.http://dx.doi.org/10.1016/0302-3524(78)90106-8

van de Kreeke, J. (2006). "An aggregate model for the adaptation of the morphology and sand bypassing after basin reduction of the Frisian Inlet." Coastal Engineering 53(2-3): 255-263.http://dx.doi.org/10.1016/j.coastaleng.2005.10.013

Dan, S., M. J. F. Stive, D.-J. R. Walstra, et al. (2009). "Wave climate, coastal sediment budget and shoreline changes for the Danube Delta." Marine Geology 262(1-4): 39-49.http://dx.doi.org/10.1016/j.margeo.2009.03.003

Fockert, A. d. (2008). Impact of Relative sea Level Rise on the Amelander Inlet Morphology. Coastal Engineering. Delft, TU Delft. Master in Science.

PMid:18613627

Vinther, N., J. r. Nielsen and T. Aagaard (2004). "Cyclic Sand Bar Migration on a Spit-platform in the Danish Wadden Seaâ€"Spit-platform Morphology Related to Variations in Water Level." Journal of Coastal Research: 672-679.http://dx.doi.org/10.2112/1551-5036(2004)20[672:CSBMOA]2.0.CO;2

Petersen, D., R. Deigaard and J. Fredsøe (2008). "Modelling the morphology of sandy spits." Coastal Engineering 55(7-8): 671-684.http://dx.doi.org/10.1016/j.coastaleng.2007.11.009

Elias, E. v. K., M.; Tonnon, P.K. and Wang, Z.B. (2007). Sediment budget analysis and testing hypoteses for the Dutch coastal system. Advance in Hydro-Science and Engineering. Den Haag.

Cleveringa, J., C. G. Israel and D. W. Dunsbergen (2005). De westkust van Ameland. Den Haag, The Netherlands, Rijkwaterstaat: 74.

Mead, S. a. B., K. (2001). "Predicting the Breaking Intensity of Surfing Waves." Journal of Coastal Research SI 29(SI 29): 51-65.

Mulder, J. P. M. (2000). Zandverliezen in het Nederlandse kustsysteem, Rijkswaterstaat, RIZK.

Nicholas, C. K. (2000). "Reservoir Model of Ebb-Tidal Shoal Evolution and Sand Bypassing." Journal of Waterway, Port, Coastal, and Ocean Engineering 126(6): 305-313.http://dx.doi.org/10.1061/(ASCE)0733-950X(2000)126:6(305)


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