Largest tsunami [Most destructive]
Last updated: October 16, 2017 at 2:13 am
The 2004 Indian Ocean tsunami that killed 230,000 people in 14 different countries is the largest on record. It was caused by an earthquake with a moment magnitude of 9.1–9.3 and a maximum Mercalli intensity of IX (Violent). Its epicentre was off the west coast of Sumatra, Indonesia. It was the third most powerful earthquake ever recorded on a seismograph and it had a record faulting duration, which lasted between 8.3 and 10 minutes. The record tsunami was also known as the Boxing Day tsunami, the Christmas tsunami, the Indonesian tsunami, and the South Asian tsunami.
Analysis of the Sumatra-Andaman Earthquake Reveals Longest Fault Rupture Ever. National Science Foundation. May 19, 2005.
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Jeffrey Gallant is the Editor-in-Chief and Records Keeper of the Diving Almanac. He is also a contributing editor of DIVER Magazine, and the scientific director of the Greenland Shark and Elasmobranch Education and Research Group (GEERG). Jeffrey started diving in 1982.