HORIZONTAL INFO MONDRIAN

2004 Indian Ocean Earthquake and Tsunami

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The Sumatra-Andaman earthquake struck 150 miles from the coast of Sumatra island, on the northwest of the Indonesian island group, and 31 miles below the ocean floor. The quake occurred along a fault line between the Indian tectonic plate and the Burma microplate, part of the Australian plate. The Indian plate is a heavy ocean plate, and it slipped under the lighter coastal plate, rupturing a 900-mile length of the fault.

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It was a powerful megathrust quake, occurring where a heavy ocean plate slips under a lighter continental plate. The quake caused the ocean floor to suddenly rise by as much as 40 meters, triggering a massive tsunami.

A powerful undersea earthquake that struck off the coast of Sumatra island, Indonesia, set off the 2004 Indian Ocean tsunami, also known as the Christmas or Boxing Day tsunami, on Sunday morning, Dec. 26, 2004. The magnitude 9.1 quake ruptured a 900-mile stretch of fault line where the Indian and Australian tectonic plates meet. It was a powerful megathrust quake, occurring where a heavy ocean plate slips under a lighter continental plate.

death loss, property destruction, mental trauma,econ omic loss both in agriculture and industry.

Within 20 minutes of the earthquake, the first of several 100-foot waves hit the shoreline of Banda Aceh, killing more than 100,000 people and pounding the city into rubble. Then, in succession, tsunami waves rolled over coastlines in Thailand, India, and Sri Lanka, killing tens of thousands more.

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Christmas or Boxing Day tsunami, on Sunday morning, Dec. 26, 2004