160749.fig.006a
(a)  First harmonic
160749.fig.006b
(b) Second harmonic
160749.fig.006c
(c) Third harmonic
160749.fig.006d
(d) Fourth harmonic
160749.fig.006e
(e) Surface elevation
Figure 6: The spatial variation of the harmonics of Luth’s experiment (circle) [26] and the numerical results of the enhanced model (solid) and the original model (dashed).