“…The second problem that we consider is similar to the first, but with a threedimensional topography, a Gaussian ring. Under weakly barotropic forcing, this set up generates internal wave beams that focus into a small area, where wavewave interaction generates a localized patch of turbulence (Buhler and Muller, 2007;Chalamalla et al, 2016Chalamalla et al, , 2017. It is of interest to test how the regridding algorithm of SOMAR-LES behaves when the region that needs high-resolution has a complex three-dimensional spatial shape.…”