Tsunami (Tsunami) is a wave caused by an earthquake, but the water surface waves that we commonly known caused by wind blowing. Kinetic energy from the water surface to air is causing waves. The size of the wave, so it depends on the wind speed. If the weather is bad wind storm blows. It will have a big wave. In normal conditions the waves in the ocean to a height of about 1-3 feet, but the tsunami is a giant wave, wave, water surface, larger than only dozens. Kinetic energy from the earthquake are oceans under the Earth's crust is reproduced from the South up to the surface of the water, and then convey the expansion into any direction. the words "coast" is language the Tsu Japan means "harbor wave" means that NAMI calls such as this, it is because. Japan fishermen go out to find fish. The secret is to accumulate a giant wave blows see coastal tumble.
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