Bangkok - The 2004 tsunami that devastated northern Indonesia and Thailand's Andaman coast had at least one likely precedent about 600 years ago, Nature Magazine said Wednesday.
Two groups of scientists have found sedimentary evidence for possible predecessors to the 2004 catastrophe on Phra Thong Island, Thailand and in Aceh, Indonesia, suggesting that a similar-sized tsunami occurred in 1400 AD, predating any historical records.
The December 26, 2004 tsunami, triggered by a 9.2 magnitude earthquake off the coast of Sumatra, took the region by surprise, leaving an estimated 226,000 people dead and missing from 11 countries rimming the Indian Ocean.