A tsunami is a very long-wavelength wave produced by a sudden movement in the sea floor over

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A tsunami is a very long-wavelength wave produced by a sudden movement in the sea floor over a distance of hundreds of kilometers. The wavelengths in a tsunami are generally much greater than ocean depth so that a tsunami can be described accurately in the shallow wave approximation, and is non-dispersive. Consider a tsunami described by a wave with approximate wavelength 100 km and amplitude 1 m. Compute the velocity and period of this wave and the power density per unit length of shoreline perpendicular to the incident wave. you may approximate ocean depth as h ∼ 3.5 km. Also you will need the power density in the shallow wave approximation.

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The Physics of Energy

ISBN: 978-1107016651

1st edition

Authors: Robert L. Jaffe, Washington Taylor

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