Tsunami

A tsunami is a series of water waves caused by the sudden displacement of a large volume of a body of water, typically an ocean. Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calving, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami. These waves are very different from normal sea waves, because their wavelength is far longer. Large events can gene