Earth and Environment Atlas

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Phenomena

2004 Indian Ocean Earthquake and Tsunami

Earthquake and Tsunami

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One of the deadliest natural disasters in recorded history: an undersea megathrust earthquake off Sumatra on December 26, 2004, that sent tsunami waves across the Indian Ocean, killing an estimated 227,898 people in fourteen countries.

Facts
Event Date
2004-12-26 1
Magnitude or Scale
Moment magnitude 9.2 to 9.3, per recent studies 1
Death Toll
Approximately 227,898 dead across the Indian Ocean region 1
Location
Off the west coast of northern Sumatra, Indonesia, on the Sunda megathrust 1
Cross-Tradition Connections

Caused By

Subduction, Processes

A megathrust rupture on the Sunda subduction zone, where the Indian Plate is subducting beneath the Burma microplate.

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