Abstract
In the present contribution a measurement technique based on video imaging has been selected for the assessment of the maximum run-up. Such measurements have been used for the calibration of a numerical model and of an empirical formulation. The on-site run-up measurements have been carried out at "Lido Signorino† beach, near Marsala, Italy. The positions of the swash have been localized on a transect, normal to the shore, constituted by stakes placed at 0.5 m intervals each other. The video camera was placed orthogonally to the line of the stakes. For the numerical simulations a 1DH Boussinesq-type of model for breaking waves has been applied which takes into account the wave run-up by a Lagrangian shoreline model. In such simulations monochromatic waves have been propagated in a numerical flume having the same beach slope of the measured transect. The comparison between registered and estimated run-up have underlined an acceptable agreement. In particular, it has been obtained that the numerical model tends to underestimate the run-up, instead the applied empirical formula gives overestimated values.References
Archetti, R., and Romagnoli, C. 2011. Analysis of the effects of different storm events on shoreline dynamics of an artificially embayed beach. Earth Surface Processes and Landforms, 36,1449-1463.http://dx.doi.org/10.1002/esp.2162">http://dx.doi.org/10.1002/esp.2162
Booij, N., Ris, R.C. and Holthuijsen, L.H. 1999. A third generation wave model for coastal regions, part I: model description and validation, Journal of Geophysical Research, 104, 7649-7666.http://dx.doi.org/10.1029/98JC02622">http://dx.doi.org/10.1029/98JC02622
Holman, R.A., Sallenger, A.H., Jr. 1985. Setup and swash on a natural beach, Journal Geophysics Research, 90(C1), 945-953.http://dx.doi.org/10.1029/JC090iC01p00945">http://dx.doi.org/10.1029/JC090iC01p00945
Holthuijsen, L.H., Booij, N. and Ris, R.C. 1993. A spectral wave model for coastal zone. Proceedings of the 2nd International Symposium on Ocean Wave Measurement and Analysis. New Orleans.
Hughes, S.A. 2004. Estimation of wave run-up on smooth, impermeable slopes using the wave momentum flux parameter, Coastal Engineering, 51(11-12), 1085-1104.http://dx.doi.org/10.1016/j.coastaleng.2004.07.026">http://dx.doi.org/10.1016/j.coastaleng.2004.07.026
Lo Re, C., Musumeci, R.E. and Foti, E. 2012. A shoreline boundary condition for a highly nonlinear Boussinesq model for breaking waves, Coastal Engineering, 60, 41-52.http://dx.doi.org/10.1016/j.coastaleng.2011.08.003">http://dx.doi.org/10.1016/j.coastaleng.2011.08.003
Manno, G. 2012. Localizzazione della linea di riva, in spiagge sabbiose stabili, considerando le fluttuazioni da onde e maree. PhD thesis, University of Palermo. (Italian).
Manno, G., Lo Re, C., Ciraolo, G. 2011. Shoreline detection in gentle slope Mediterranean beach. Proceedings of the 5th SCACR: International Short Conference on Applied Coastal Research.
Nielsen, P. and Hanslow, D.J. 1991. Wave run-up distributions on natural beaches. Journal of Coastal Research, 7, 1139-1152.
Prasad, R.S. and Svendsen, A. 2001. The boundary condition at the moving shoreline for nearshore models. Center for applied coastal research, Ocean Engineering Laboratory University of Delaware, Newark, 19716.
Raubenheimer, B., and Guza, R.T. 1996. Observations and predictions of run-up, Journal Geophysics Research, 101(C10), 25575-25587.http://dx.doi.org/10.1029/96JC02432">http://dx.doi.org/10.1029/96JC02432
Ris, R.C., Booij, N. and Holthuijsen, L.H. 1999. A third generation wave model for coastal regions, part II: verification. Journal of Geophysical Research. 104(4), 7649-7666.http://dx.doi.org/10.1029/1998JC900123">http://dx.doi.org/10.1029/1998JC900123
Saville, T. 1962. Freeboard allowances for waves in inland reservoirs. Journal of the Waterways and Harbours Division, 18, 92-124.
Seymour, R.J. 1977. Estimating wave generation on restricted fetches. Journal of the Waterway Port Coastal and Ocean Division, 103(2), 251-264.
Vincent, C.L. 1984. Shore Protection Manual, fourth edition, Washington.