Findings Suggest ’04 Tsunami Was Biggest in 600 Years - NYTimes.com

Findings Suggest ’04 Tsunami Was Biggest in 600 Years - NYTimes.com: "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.
Skip to next paragraph

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."