BEACH INUNDATION PREDICTION DURING STORMS USING DIFFERENT WAVE HEIGHTS AS INPUTS

Amanda Sancho, Jorge Guillén, Gonzalo Simarro, Raúl Medina, Verónica Cánovas

Abstract


Beach inundation prediction is evaluated at an artificial, tideless embayed beach located in the city of Barcelona (NW Mediterranean, Spain). To this end, inundation measurements using video observations are compared with estimations including the tidal variations and the wave runup formulation of Stockdon et al. (2006), introducing deep water, local wave measurements and local wave computations as inputs. As the observations consider the mean runup and the estimations use the 2% runup exceedance (R2%), the inundation is overestimated if any of the wave heights in the formulation are used. Nonetheless, results are improved if a local wave height at 10 m depth is used, in particular for waves approaching the shore obliquely. Finally, it is stated that the differences between the observations and the estimations vary along the beach, being higher in the curved zone of the embayment.

Keywords


wave runup; embayed beaches; video monitoring.

References


Bosom, E., Jimenez, J. A., 2011. Probabilistic coastal vulnerability assessment to storms at regional scale- application to Catalan beaches (NW Mediterranean). Natural Hazards and Earth System Sciences, 11 (2), 475-484.http://dx.doi.org/10.5194/nhess-11-475-2011

Ciavola, P., Ferreira, O., Haerens, P., Van Koningsveld, M., Armaroli, C., Lequeux, Q., 2011. Storm impacts along European coastlines. part 1: The joint effort of the Micore and ConHaz projects. Environmental Science & Policy, 14 (7), 912-923.http://dx.doi.org/10.1016/j.envsci.2011.05.011

del Rio, L., Plomaritis, T., Benavente, J., Valladares, M., P, R., 2012. Establishing storm thresholds for the Spanish Gulf of Cadiz coast. Geomorphology, 143-144, 13-23.http://dx.doi.org/10.1016/j.geomorph.2011.04.048

Gonzalez, M., Medina, R., Gonzalez-Ondina, J., Osorio, A., Mendez, F. J., Garcia, E., 2007. An integrated coastal modeling system for analyzing beach processes and beach restoration projects, SMC. Computers & Geosciences, 33 (7), 916-931.http://dx.doi.org/10.1016/j.cageo.2006.12.005

Guza, R. T., Thornton, E. B., 1982. Swash oscillations on a natural beach. Journal of Geophysical Research-Oceans and Atmospheres, 87 (NC1), 483-491.http://dx.doi.org/10.1029/JC087iC01p00483

Holland, K. T., Holman, R. A., Lippmann, T. C., Stanley, J., Plant, N., 1997. 480 Practical use of video imagery in nearshore oceanographic field studies. IEEE Journal of Oceanic Engineering, 22 (1), 81-92.http://dx.doi.org/10.1109/48.557542

Holman, R., Stanley, J., 2007. The history and technical capabilities of Argus. Coastal Engineering, 54, 477-491.http://dx.doi.org/10.1016/j.coastaleng.2007.01.003

Hsu, J. R. C., Evans, C., 1989. Parabolic bay shapes and applications. Proceedings of the Institution of Civil Engineers Part 2-research and Theory, 87, 557-570.

Klein, A. H. D., Vargas, A., Raabe, A. L. A., Hsu, J. R. C., 2003. Visual assessment of bayed beach stability with computer software. Computers & Geosciences, 29 (10), 1249-1257.http://dx.doi.org/10.1016/j.cageo.2003.08.002

Ojeda, E. and Guillén, J.,2008. Shoreline dynamics and beach rotation of artificial embayed beaches. Marine Geology, 253, 51–62.http://dx.doi.org/10.1016/j.margeo.2008.03.010

Ruessink, B., Kleimhans, M., van del Beukel P.G.L., 1998. Observations of swash under highly dissipative conditions. Journal of Geophysical Research, 12 103 (2), 3111-3118.

Ruggiero, P., Komar, P., McDougal, W. G., M., J.J., Beach, R., 2001. Wave runup, extreme water levels and the erosion of properties backing beaches. Journal of Coastal Research, 17 (2), 407-419.

Sallenger, A. H., 2000. Storm impact scale for barrier islands. Journal of Coastal Research, 16 (3), 890-895.

Short, A., Masselink, G., 1999. Handbook of Beach and Shoreface Morphodynamics. Willey, Ch. Embayed and structurally controlled beaches, pp. 230-249.

Stockdon, H., Holman, R.A., Howd, P.A., and Sallenger Jr., A.H. 2006. Empirical parameterization of setup, swash and runup. Coastal Engineering, 53, 573-588.http://dx.doi.org/10.1016/j.coastaleng.2005.12.005

Wolf, J., 2009. Coastal flooding: impacts of coupled wave-surge-tide models. Natural Hazards, 49 (2), 241-260http://dx.doi.org/10.1007/s11069-008-9316-5


Full Text: PDF

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.