Disaster Events | VOL. 11, ISSUE 69, November-December 2011 |

A sea wave named Tsunami

A tsunami is a series of ocean waves that sends surges of water, sometimes reaching heights of over 100 feet (30.5 metres) onto land. These walls of water can cause widespread destruction when they crash ashore. Tsunamis can race across the sea at up to 500 miles (805 kilometres) an hour—about as fast as a jet airplane. These awe-inspiring waves are typically caused by large undersea earthquakes at tectonic plate boundaries (Fig. 1). When the ocean floor at a plate...

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