“…Propagation over a submerged bar is known to test the nonlinearity and accurate dispersion of a wave model, as shown in experimental studies by Beji and Battjes [28], Luth et al [32], Ohyama et al [33], and Zou et al [34]. When waves propagate over the front slope of a bar, higher harmonic bound waves are introduced and the waves become higher and steeper.…”