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2004 Indian Ocean earthquake

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2004 Indian Ocean earthquake

Tsunami strikes Ao Nang, Thailand.DateDecember 26, 2004Magnitude9.3 MwDepth30 km (19 mi)Epicenter locationCoordinates: TypeUndersea (subduction)Countries or regions affectedIndonesia (mainly in Aceh)

Sri Lanka

India (mostly in Tamil Nadu)

Thailand

MaldivesTsunamiYesCasualties230,000+[1][2] (the fifth deadliest earthquake in recorded history)

2004 Indian Ocean

earthquake

Events

  • Timeline
  • Countries affected:

Response

  • Humanitarian

See also

  • Warning System
  • Library damage
  • 2005 Sumatra earthquake

v • d • e

The 2004 Indian Ocean earthquake was an undersea megathrust earthquake that occurred at 00:58:53 UTC on December 26, 2004, with an epicentre off the west coast of Sumatra, Indonesia. The quake itself is known by thescientific community as the Sumatra-Andaman earthquake.[3][4] The resulting tsunami itself is given various names, including the 2004 Indian Ocean tsunami, Asian Tsunami, Indonesian Tsunami, and Boxing Day Tsunami.

The earthquake was caused by subduction and triggered a series of devastating tsunamis along the coasts of most landmasses bordering the Indian ocean, killing nearly 230,000 people in fourteen countries, and inundating coastal communities with waves up to 30 meters (100 feet) high. It was one of the deadliest natural disasters in recorded history. Indonesia, Sri Lanka, India, and Thailand were the hardest hit.

With a magnitude of between 9.1 and 9.3, it is the second largest earthquake ever recorded on a seismograph. This earthquake had the longest duration of faulting ever observed, between 8.3 and 10 minutes. It caused the entire planet to vibrate as much as 1 cm (0.4 inches)[5] and triggered other earthquakes as far away as Alaska.[6]

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