Geometric relationship of beach cusps with marine hydrodynamics: example of Cap de Naze beach, Popenguine (Senegal)

Résumé

The geometry of beach cusps in the Cap de Naze sandy part of the beach has been investigated. A signal corresponding to beach cusps undulation has been analyzed using Multitaper spectral analysis method. Three periods corresponding to a length of 14, 23 and 35 meters have been highlighted. Comparison with swell geometric parameters shows that the periods of beach cusps are 2.25 to 5.35 times wider. Further parametric studies with varying locality and seasonality are necessary to know all about the observed relationship.