ScienceAI image1929 Newfoundland Earthquake Revealed Fast Underwater Sediment Flow
On 18 November 1929, an earthquake off Newfoundland broke six transatlantic telegraph cables almost simultaneously and six more over the next 13 hours and 17 minutes. In 1952, Columbia geologists used the cable break pattern to reconstruct a turbidity current moving across the Atlantic seabed at speeds up to 100 kilometers per hour.
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