Advances in Geosciences www.adv-geosci.net 1680-7340 1680-7359 17 9th EGU Plinius Conference on Mediterranean Storms (2007) 2008 10.5194/adgeo-17-19-2008 http://www.adv-geosci.net/17/19/2008/ http://www.adv-geosci.net/17/19/2008/adgeo-17-19-2008.html http://www.adv-geosci.net/17/19/2008/adgeo-17-19-2008.pdf 19 22 2008-06-20 Coupled wave and surge modelling and implications for coastal flooding J. Wolf jaw@pol.ac.uk Proudman Oceanographic Laboratory, Joseph Proudman Building 6, Brownlow Street Liverpool, L3 5DA UK The physical causes of coastal flooding due to marine storms are discussed. We examine the costs and impacts of storm surges and waves with reference to the UK. The mechanisms of interaction between waves and the mean circulation due to tides and wind are reviewed. A case study to illustrate the magnitude of surges, waves and their interactions is presented for Liverpool Bay in the eastern Irish Sea. Applications of surge and wave models to the Mediterranean, especially the Adriatic Sea, are considered. Bargagli, A., Carillo, A, Mariotti, A., Pisacane, G., Ruti, P. M., and Struglia, M. V.: An integrated forecast system over the Mediterranean basin: extreme surge prediction in the northern Adriatic Sea, Mon. Weather Rev., 130, 1317–1322, 2002. Flather, R. A.: Existing operational oceanography, Coast. Eng., 41, 13–40, 2000. Gerritsen, R. A.: What happened in 1953? The Big Flood in the Netherlands in retrospect, Phil. Trans. R. Soc. A 363, 1271–1291, 2005. Gill, A. E.: Atmosphere-Ocean Dynamics, Academic Press, 662 pp., 1982. Hall, J. W., Sayers, P. B., Panzeri, M. and Deakin, R.: Quantitative assessment of driver impacts on future flood risk in England and Wales, Chap. 13 in: Future flooding and coastal erosion risks, edited by: Thorne, C. R., Evans, E. P., and Penning-Rowsell, E. C., Thomas Telford, 514 pp., 2007. Hinton, C., Townend, I. H., and Nicholls, R. J.: Coastal Processes, Chap. 9 in: Future flooding and coastal erosion risks, edited by: Thorne, C. R., Evans, E. P., and Penning-Rowsell, E. C., Thomas Telford, 514 pp., 2007. Horsburgh, K. J. and Wilson, C.: Tide-surge interaction and its role in the distribution of surge residuals in the North Sea, J. Geophys. Res., 112, C08003, doi:10.1029/2006JC0040332007 Jones, J. E. and Davies, A. M.: Storm surge computations for the Irish Sea using a three-dimensional numerical model with wave-current interaction, Cont. Shelf Res., 18, 201–251, 1998. Lennon, G. W.: The identification of weather conditions associated with the generation of major storm surges along the west coast of the British Isles, Q. J. Roy. Meteor. Soc., 89, 381–394, 1963. Lionello, P., Zampato, L., Malguzzi, P.,Tomasin, A., and Bergamasco, A.: On the correct surface stress for the prediction of the wind wave field and the storm surge in the northern Adriatic Sea, Nuovo Cimento, 21C, 515–531, 1998. Osuna, P. and Wolf, J.: A numerical study on the effect of wave-current interaction processes in the hydrodynamics of the Irish Sea, In Proceedings of the 5th. International Conference on Ocean Wave Measurement and Analysis: WAVES2005, 3rd to 7th July, 2005, Madrid, Spain, 2005. Ozer, J., Padilla-Hernández, R., Monbaliu, J., Alvarez Fanjul, E., Carretero Albiach, J. C., Osuna, P. Yu, J. C. S. and Wolf, J.: A coupling module for tides, surges and waves, Coast. Eng., 41, 95–124, 2000. Pirazzoli, P. A. and Umgiesser, G.: Is the "MOSE" project to save Venice already obsolete?, Geophys. Res. Abstr., 5, 03393, 2003. Pugh, D. T.: Changing Sea Levels: Effects of Tides, Weather and Climate, Cambridge University Press, 2004. Smith, S. D. and Banke, E. G.: Variation of the sea surface drag coefficient with wind speed, O. J. Roy. Meteor. Soc., 101, 665–673, 1975. Sutherland, J. S. and Wolf, J.: Coastal defence vulnerability 2075. 36$^th$ Conference of River and Coastal Engineers, Keele University, June 20–22, 2001. Sutherland, J. S. and Wolf, J.: Coastal defence vulnerability 2075, HR Wallingford Report SR590, 2002. Wakelin, S. L. and Proctor, R.: The impact of meteorology on modelling storm surges in the Adriatic Sea, Global Planet. Change, 34, 1, 97–119, 2002. Wolf, J.: Surge-tide interaction in the North Sea and River Thames, 75–94, in: Floods due to high winds and tides, edited by: Peregrine, D. H., 1981. Wolf, J.: Coupling waves and currents in POLCOMS with measurements from the coastal observatory. Annales Hydrographiques, 6th Ser., 3, 772, 9-1–9-3, 2004. Wolf, J. and Flather, R. A.: Modelling waves and surges during the 1953 storm, Phil. Trans. R. Soc. A, 363, 1359–1375, 2005. Wolf, J.: Wave climate in Liverpool Bay POL Internal Document No., 187, 27 pp., 2007. Woodworth, P. L. and Blackman, D. L.: Changes in extreme high waters at Liverpool since 1768, Int. J. Climatol., 22, 697–714, 2002.