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Propagation of the giant (9.1 M) 2004 Sumatra earthquake

The rupture started at the epicenter (yellow circle) and propagated north. It took about 10 minutes to cover the 1500 km (900 miles) distance.

The rupture caused some areas to uplift (amount indicated in red) and others to subside (blue).

Time is indicated in minutes.

This simulation was generated from a numerical model that uses seismological records from all over the world.

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Tectonics Observatory :: California Institute of Technology
Last updated: September 25, 2009 :: Contact Us