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We have developed a molecular dynamic approach for studying tsunami
generation. In a two-dimensional model developed a force, which models the generation of
disturbance, was incorporated into the water after reaching thermodynamic equilibrium. The
temporal evolution of an arising wave shows that at first the disturbance creates the wave of
large amplitude which propagates with a significant velocity and a cavity at the site of
disturbance. When the wave reaches shallow water, the amplitude and velocity decreases, and
the wave changes its shape that is consistent with observations for areas with a large angle of
bank. As the bank is approached, the wave density decreases, and foam formation takes place.
From the very beginning the surface layer has a lesser density, as if one has "rarefied" water.
During the wave propagation the rarefied water penetrates deeper.
Keywords: molecular dynamic; tsunami generation; two-dimensional model; temporal evolution; large amplitude wave; cavity; bank; foam formation; rarefied water |
full paper (pdf, 1728 Kb)