“…where η(x, t), Q(x, t), h(x, t), and p(x, t) are the water surface displacement, flow rate in the x-axis direction, still-water depth, and pressure on the water surface, respectively. Equations (A1) and (A2) were proposed and applied in [25], with reference to the dispersion term of [26], and also utilized by [27] to calculate transoceanic tsunamis. In Section 2, these equations were transformed to finite difference equations, as in [27], and solved numerically, where the grid size ∆x was 100 m and the time interval ∆t was 0.05 s.…”