A megathrust quake caused the tsunami. Shivaji Rao December 24, April 07, What they were observing was a precursor to the incoming gigantic tsunami waves generated due to a M 9. This earthquake occurred along a thrust fault in the subduction zone where the Indian tectonic plate is going below the overriding Burmese plate.
Introduction: Asian Tsunami Disaster | New Scientist
Find out what's happening in the world as it unfolds. A general view of the scene at the Marina beach in Madras, 26 December , after tidal waves hit the region. Tidal waves devastated the southern Indian coastline killing people, the home minister said, warning that the grim death toll was expected to rise. On December 26, , an earthquake with an estimated magnitude of 9.
What caused the Indonesia tsunami and could lives have been saved?
By John Pickrell Geophysics of the Asian tsunami At nearly local time on 26 December, a titanic shift of tectonic plates triggered an immense magnitude 9. The quake was much greater than any to rock the planet since The consequent tsunami devastated coastlines around the ocean and killed around , people, with millions left destitute. Here, we explain the geophysics behind the disaster. Thirty kilometres beneath the ocean floor, a kilometre-stretch of the Indian plate slipped 20 metres beneath the Burma plate.
In February , scientists revised the estimate of the magnitude to 9. A study estimated a magnitude of Mw 9. This quickly elevated the height and increased the speed of waves, destroying the nearby Indonesian town of Lhoknga.
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