globeanm.gif (7996 bytes)What causes Tsunamiglobeanm.gif (7996 bytes)

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Tsunamis are often caused by earthquakes, and sometimes submarine volcano eruptions.
While tsunamis caused by earthquakes are usually less violent, waves caused by submarine
volcanic eruptions can reach heights of 125 feet above sea-level, as it was in 1883 when waves
caused by the Great Krakatau Volcanic Eruption killed thousands of people and wiped out
numerous coastal villages. Not all earthquakes result in tsunamis, only those underneath or near
oceans. Thus, the Pacific Ocean experiences the most tsunamis because of the large number of
earthquakes that occured there.