Abstract
In this paper, the kinematics of tsunami wave rays and wavefronts propagating over an uneven bottom is considered. Formulas to determine the wave height along a ray tube are obtained. An exact analytical solution for the trajectory of a wave ray over a parabolic bottom is derived. In the wave-ray approximation, this solution makes it possible to analytically determine the heights of tsunami waves over an area with a sloping bottom. The distribution of wave-height maxima over an area with a parabolic bottom is compared with that obtained by numerical computation with a shallow-water model.
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