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In the Path of Destruction!

How Tsunamis Form

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Tsunamis are formed as a result of earthquakes, volcanic eruptions, or landslides that occur under the sea. When these events occur under the water, huge amounts of energy are released as a result of quick upward bottom movement. For example, if a volcanic eruption occurs, the ocean floor may very quickly move upward several hundred feet. When this happens, huge volumes of ocean water are pushed upward and a wave is formed. A large earthquake can lift thousands of square kilometres of sea floor, which will cause the formation of huge waves. The Pacific Ocean is especially prone to tsunamis as a result of the large amount of undersea geological activity.

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As illustrated in the picture the oceans plates are rapidly moving together due to seismic activity. Therefore causing one plate to rapidly rise vertically creating a Tsunami.

By: Robbie & Colin                 SNC 2D1 2005-06 GR.10