megatsunami

Noun. A '''megatsunami''' is a term used by the popular media to describe very large tsunamis, which are very large and destructive waves that are generally caused by a tremendous disturbance in the ocean floor. The term '''megatsunami''' is used informally for tsunamis with wave heights of 40 m or greater.

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This entry was last updated on RefTopia from its source on 3/20/2012.