Waves at shallow water
Waves at shallow water develop when the ocean surface waves travel into the coastal area where the waves' length is considerably larger than the water depth. The normal orbital motion of the water particles there is disrupted by the ocean bottom. As the water becomes shallower, the swell on the water surface becomes higher and steeper. After the wave breaks, it transfers in, practically, unobstructed flow when erosion of the ocean bottom and shore line intensifies dramatically. The most devastating effect may happen in the case of tsunami.
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