On the use of the radon transform in studying wave dynamics
Résumé
In nearshore studies, there is an increasing interest for describing wave-by-wave dynamics. Most existing methods compute bulk parameters for celerity and the separation of incoming and outgoing waves. In this paper we address the use of the Radon Transform for studying wave dynamics. The Radon Transform is a projection of a bidimensional field (e.g. spatiotemporal wave signal) into polar coordinates which can be back projected at given angles. The method is applied to laboratory low-sloping beach and non-linear waves GLOBEX dataset. The separation of incoming from outgoing long waves using Radon is tested and compared to the method described in Guza et al., (1984). Components are retrieved, even at standing long wave nodes. Individual short wave celerity derived from Radon is found in agreement with celerity derived from tracked individual crest.