Generation of long waves in a basin by short-term displacements of the lateral boundary

A simplified model of generation of tsunamis by earthquakes occurring on the dry land is proposed. The transfer of horizontal momenta to the liquid medium is realized via the horizontal displacements of the vertical lateral boundary according to a given time law. The problem is solved by the method of finite differences for elastic and inelastic displacements of the lateral boundary of the basin. The efficiency of the process of generation of tsunami-type waves by similar external disturbances is analyzed. It is shown that the efficiency of generation of the surface waves by the elastic displacements of the lateral boundaries of the basin is much higher than that in the case of displacements of the boundary with residual deformations