4/11/2012 (Mw 8.6), Offshore Sumatra, Indonesia Back-Projection Results

The April 11 2012 M8.6 earthquake off-shore Sumatra is a record-breaking event in many respects: it is the largest strike-slip earthquake and the largest intraplate earthquake ever recorded. High-resolution source imaging by back-projection of high-frequency teleseismic array data (by Lingsen Meng, Jean-Paul Ampuero, and Yingdi Luo) shows that this is also one of the most complicated ruptures ever witnessed by modern seismology. It involved rupture on at least three different faults in a system of almost orthogonal faults.

Click here to read the article on the Techtonics Observatory website.