What Is A Tsunami?

Tsunami is a Japanese word meaning “harbor wave” and is used to describe a massive ocean wave, usually caused by an aquatic earthquake or a volcanic eruption. The large ocean wave occurs when the abrupt movement of tectonic plates in a vertical direction creates a sudden vertical displacement of water.1

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  1. “Tsunami.” In Merriam-Webster. Accessed December 15, 2014. http://www.merriam-webster.com/dictionary/tsunami.

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