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The speed of the tsunami travelling trough the ocean is dependent on the ocean depth. The Mariana Trench is the deepest known part of the ocean with a depth of approx. 11000 meters. When a tsunami would travel over this trench it could theoretically reach a speed of approx. 330 m/s or 1180 km/h.

To break the sound barrier at sea level, a speed of 1224 km/h needs to be reached. This means that there is no known earth condition where this phenomona could occur.

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11y ago

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