Tsunamis are waves generated by large earthquakes, underwater volcanic eruptions and even meteor impacts. A tsunami travels at high speeds of up to 950km/h in the open ocean. This means that a tsunami wave might travel as fast as a jet airplane, although wave heights in the epicenter only rise one meter (3.2 feet) up. The time period between tsunami waves is extremely long and ranges between several minutes and a few hours. The energy and power of a tsunami are, therefore, not comparable with a classic groundswell.

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What is a tsunami?

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