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What causes a tsunami?
Topic Started: 18 Sep 2015, 11:55 AM (4 Views)
Sandy
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A tsunami is a series of waves that are produced by a sudden movement of the seabed: earthquakes, volcanic eruptions, underwater landslides or even an asteroid. But frequently they are set off by earthquakes occurring at a depth of less than 50 metres, measuring at least 6.5 in magnitude. At a magnitude of 8, a tsunami can be devastating.

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