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@e_galv Dec. 7, 1944 Tōnankai earthquake: M7.9 on the Richter magnitude scale https://t.co/g7RDEY7EsR M8.1 on the moment magnitude scale https://t.co/s4zLaYaLEL
@e_galv Dec. 7, 1944 Tōnankai earthquake: M7.9 on the Richter magnitude scale https://t.co/g7RDEY7EsR M8.1 on the moment magnitude scale https://t.co/s4zLaYaLEL