Advances in Geosciences www.adv-geosci.net 1680-7340 1680-7359 26 11th EGU Plinius Conference on Mediterranean Storms (2009) 2010 10.5194/adgeo-26-83-2010 http://www.adv-geosci.net/26/83/2010/ http://www.adv-geosci.net/26/83/2010/adgeo-26-83-2010.html http://www.adv-geosci.net/26/83/2010/adgeo-26-83-2010.pdf 83 87 2010-08-02 Storm-induced coastal hazard assessment at regional scale: application to Catalonia (NW Mediterranean) E. Bosom eva.bosom@upc.edu J. A. Jiménez Laboratori d'Enginyeria Marítima, ETSECCPB, Universitat Politècnica de Catalunya, Barcelona, Spain International Centre for Coastal Resources Research, Barcelona, Spain A methodology for coastal hazard assessment at regional scale is presented and applied to the Catalan coast (NW Mediterranean). The method separately evaluates erosion and inundation hazards by using wave time series and beach characteristics (slope and sediment grain size). Obtained hazard time series are fitted to extreme probability distributions for different coastal sectors which are defined in function of local wave climate. This approach allows to compare the spatial variation of hazard intensities for a given probability of occurrence and, thus, to objectively identify the most hazardous areas along the coast in terms of erosion and inundation. Obtained results indicate that the coast north of Barcelona is more hazardous than the southern coast regarding inundation for any given probability. With respect to storm-induced erosion, the central coast of Catalonia is the less hazardous area, although spatial variations in erosion along the coast are smaller than the observed for inundation. % vor jede Referenz Dean, R.: Heuristic models of sand transport in the surf zone. Proc. 1st Australian Conf. on Coastal Engineering, Sydney, Australia, May 14–17, 208–214, 1973. Divoky, D. and McDougal, W. G.: Response-based coastal flood analysis, Proc. 30th Int. Conf. on Coastal Engineering, ASCE, San Diego, California, September 3–8, 5291–5301, 2006. Guedes-Soares, C., Weisse, R., Carretero, J. C., and Alvarez, E.: A 40years hindcast of wind, sea level and waves in European waters, Proc. 21st Int. Conf. on Offshore Mechanics and Arctic Engineering, ASME, Oslo, Norway, June 23–28, Paper OMAE2002-28604, 2002. Jiménez, J. A., Sánchez-Arcilla, A., and Stive, M. J. F.: Discussion on prediction of storm/normal beach profiles, J. Waterw. Port. C-ASCE, 19(4), 466–468, 1993. Jiménez, J. A., Ciavola, P., Balouin, Y., Armaroli, C., Bosom, E., and Gervais, M.: Geomorphic coastal vulnerability to storms in microtidal fetch-limited environments: Application to NW Mediterranean & N Adriatic Seas, J. Coast. Res., SI 56, 1641–1645, 2009. Jiménez, J. A., Sancho, A., Bosom, E., Valdemoro, H. I., Guillén, J., and Galofré, J.: Validation of vulnerability assessment to storms at the Catalan coast (NW Mediterranean) during the last 50 years, Proc. 32nd Coast. Eng. Conf., ASCE, Shanghai, China, June 30–July 5, in press, 2010. McFadden, L., Nicholls, R. J., and Penning-Rowsell, E.: Managing Coastal vulnerability, Elsevier, 262~pp., 2007. Mendoza, E. T. and Jiménez, J. A.: Factors controlling vulnerability to storm impacts along the Catalonian coast, Proc. 29th Int. Conf. on Coastal Engineering, ASCE, Lisbon, Portugal, September 19–24, 3087–3099, 2004. Mendoza, E. T. and Jiménez, J. A.: Storm-Induced Beach Erosion Potential on the Catalonian Coast, J. Coast. Res., SI 48, 81–88, 2006. Mendoza, E. T. and Jiménez, J. A.: Regional geomorphic vulnerability analysis to storms for Catalan beaches, P. I. Civil Eng-Mar. En., 162, 3, 127–135, 2009. Morton, R. A. and Sallenger, A. H.: Morphological impacts of extreme storms on sandy beaches and barriers, J. Coast. Res., 19, 560–573, 2003. PAP/RAC: ICZM Protocol in the Mediterranean, Split, 2007. Stockdon, H. F., Holman, R. A., Howd, P. A., and Sallenger, A. H.: Empirical parameterization of setup, swash, and runup, Coast. Eng., 53, 573–588, 2006.