Analysis and Development of Oceanographic Models:reaching the Swash Zone

The swash zone is the part of the beach where the final dissipation of the energy of the incident short waves usually occurs, while low-frequency wave energy is, generally, reflected back to sea. Swash zone flows are of fundamental importance not only because of their local effects but also because they  an affect the surf zone dynamics as a whole. Notwithstanding its importance, typical circulation models do not account for the swash zone dynamics and simplified boundary conditions are often used. This is achieved by calculating a mean shore line and provide along it shoreline boundary condition (SBCs) which take into account of the swash zone dynamics. We present a new SBCs which allowed us to reproduce a shoreline close to the one obtained by ROMSsl with a 0.1 m cross-shore resolution, but using a much coarser grid of 4 m.