Thursday, March 24, 2011

Tsunami


The term Tsunami comes from the combination of the Japanese words tsu-"harbor" and nami-"wave."
A Tsunami is a series of large violent waves caused by the displacement of a large volume of water following a large tetonic event such as an earthquake, like the one that Japan; or a volcanic eruption. They usually occur in the worlds oceans, but they have been known to also occur in large lakes. Tsunami's were first documented by the Greek historian Thucydides when he referred to it as "submarine earthquakes."


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