Effect of a Curvilinear Coastline on Edge Waves
by Yolanda Ciriano, Ph.D., (Student, Departament de Física Aplicada. Modul B5. Campus Nord. Jordi Girona 13. 08034 Barcelona. Spain Email: yolanda@fa.upc.es), Albert Falqués, (Ass. Profesor, Departament de Física Aplicada. Modul B5. Campus Nord. ETSECCPB Universitat Politècnica de Catalunya. c. Jordi Girona 13 08034 Barcelona. Spain Email: falques@fa.upc.es), and Agustín SanchezArcilla, (Professor, Maritime Engineering Laboratory, LIMDEHMA, ETSECCPB, Universitat Politècnica de Catalunya. c. Jordi Girona 13. 08034 Barcelona. Spain Email: agustin.arcilla@upc.es)
pp. 273282, (doi: http://dx.doi.org/10.1061/40566(260)28)
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Document type: 
Conference Proceeding Paper 
Part of: 
Coastal Dynamics ’01 
Abstract: 
The effects of changes in the orientation of the coastline on edge waves in case of a landward concave coast are investigated, assuming circular depth contours. Both by analytical and numerical methods it is shown that fully trapped edge waves do not exist for realistic bathymetric contours. However, quasitrapped waves with the properties of edge waves but with a small energy leakage do exist below some critical cutoff wavelength which is 1.15R for the 0 mode and that can be approximated by πR/2(2n + 1) for the higher modes where R is the curvature radius. The curvature produces a small increase of wavelength for a given period which can reach, for instance, some 12%, 18% and 24% for the 0th, first and second modes, respectively. 
