Discussion to "Boussinesq modeling of longshore currents in the SandyDuck experiment under directional random wave conditions" by J. Choi, J. T. Kirby and S. B. Yoon

Abstract

The paper (Choi et al., 2015) shows the influence of the offshore wave field (frequency-directional spectra) on the nearshore circulation, particularly on the longshore current. In contrast to usual approaches, the numerical simulations are here carried out using a phase resolving model: the fully non-linear Boussinesq-type model FUNWAVE. Because the wave height plays a relevant role in the problem, I find that it could be of interest the following discussion, which has to do with the linear shoaling error of Boussinesq equations. © 2015 Elsevier B.V.