2004 Indian Ocean Tsunami Biggest in 600 Years

Posted on November 18, 2008 

2004 Indian Ocean Tsunami Biggest in 600 Years

The tsunami that killed 230,000 people in 2004 was the biggest in the Indian Ocean in some 600 years, two new geological studies suggest.

That long gap might explain how enough geological stress built up to power the huge undersea earthquake that launched the killer waves four years ago, researchers said.

The work appears in Thursday’s issue of the journal Nature. Two research teams report that by digging pits and taking core samples in Thailand and northern Sumatra, they found evidence that the last comparably large tsunami struck between the years 1300 and 1400.

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