Abstract
Erosion due to waves is an important and actual problem for most coastal areas of the North Sea. The objective of this study was to estimate the impact of wave action on the coastline of Sylt Island. From a 2-year time series (November 1999 to October 2001) of hydrological and wave parameters generated with a coupled wave–current modelling system, a period comprising storm ‘Anatol’ (3–4 December 1999) is used to investigate the effects of waves on currents and water levels and the input of wave energy into the coastline. The wave-induced stress causes an increase of the current velocity of 1 m/s over sand and an additional drift along the coast of about 20 cm/s. This produces a water level increase of more than 20 cm in parts of the tidal basin. The model system also calculates the wave energy input into the coastline. Scenario runs for December 1999 with a water level increase of 50 cm and wind velocity increased by 10% show that the input of the wave energy into the west coast of Sylt Island increases by 30% compared to present conditions. With regard to the forecasted near-future (Woth et al., Ocean Dyn 56:3–15, 2006) increase of strong storm surges, the scenario results indicate an increased risk of coastal erosion in the surf zone of Sylt Island.
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References
Casulli V, Stelling GS (1998) Numerical simulation of 3D quasi-hydrostatic, free-surface flows. J Hydraul Eng 124:678–686 doi:10.1061/(ASCE)0733-9429(1998)124:7(678)
Dick S Kleine E, Müller-Navarra SH, Klein H, Komo H (2001) The operational circulation model of BSH (BSHcmod)—model description and validation. Tech. rep. 29. Bundesamt für Seeschiffahrt und Hydrographie, Hamburg, Germany
Eppel D, Kapitza H, Onken R, Pleskachevsky A, Puls W, Riethmüller R et al (2006) Watthydrodynamik: Die hydrodynamische Belastung von Wattgebieten. Technical report GKSS Research Centre, Institute of Coastal Research, 21502 Geesthacht, Germany
Schneggenburger C, Günther H, Rosenthal W (2000) Spectral wave modelling with non-linear dissipation: validation and applications in a coastal tidal environment. Coast Eng 41:201–235 doi:10.1016/S0378-3839(00)00033-8
Weisse R, Feser F, Günther H (2003) Wind- und Seegangsklimatologie 1958–2001 für die südliche Nordsee basierend auf Modellrechnungen. GKSS-Report 2003/12, GKSS-Forschungszentrum Geesthacht
Witte J-O, Kohlhase S, Radomski J, Fröhle P (2000) Fallstudie Sylt, Teilprojekt Strategien und Optionen der K¨ustenschutzplanung f¨ur die Insel Sylt, Abschlussbericht. Techical report, Institut f¨ur Wasserbau der Universit¨at Rostock, Wismar
Woth K, Weisse R, von Storch H (2006) Climate change and North Sea storm surge extremes: an ensemble study of storm surge extremes expected in a changed climate projected by four different regional climate models. Ocean Dyn 56:3–15 doi:10.1007/s10236-005-0024-3
Yamaguchi M (1988) A numerical model of nearshore currents due to irregular waves. Proceedings of the 21st International Conference on Coastal Engineering, pp 1113–1126
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Pleskachevsky, A., Eppel, D.P. & Kapitza, H. Interaction of waves, currents and tides, and wave-energy impact on the beach area of Sylt Island. Ocean Dynamics 59, 451–461 (2009). https://doi.org/10.1007/s10236-008-0174-1
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DOI: https://doi.org/10.1007/s10236-008-0174-1