How the size of tsunami waves increases as it approaches land?

1 ANSWERS

1. Guest6082
   

   The speed and size of a tsunami is controlled by water depth. In the deep ocean tsunami waves may be unnoticed by ships or from the air. As the wave approaches land it reaches shallow water and slows down. Relative to the front of the wave, the rear is still in slightly deeper water so it is going slightly faster and catches up. The result is that the wave quickly ‘bunches up’, the wavelength becomes shorter and the body of water becomes much higher. This is called shoaling.

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