Indonesia Tsunami 26th December 2004

by Stephanie McGrath.

December’s great Sumatra-Andaman earthquake – the most powerful in more than 40 years and the trigger of a devastating tsunami – shook the ground everywhere on Earth’s surface, scientists have found.

Weeks later the planet was still trembling.

The quake resulted from the longest fault rupture ever observed – 720 to 780 miles, which spread for 10 minutes, also a record. A typical earthquake’s duration would be 30 seconds.

The December quake was the first of its size to be measured and studied by the new worldwide array of digital seismic instruments.

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