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Tsunamis don't generate every 10-12 years. They are generated almost every time there is a powerful earthquake along a subduction zone. If there's an earthquake on a subduction fault that hits 9.0+, you can almost be guaranteed that a tsunami's no more than half an hour away.

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12y ago
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13y ago

A destructive plate margin beneath the ocean triggers a jolt in the earth's crust ,forming a tsunami.

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Q: Why do tsunamis happen every 10 or 12 years?
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