Andaman Megathrust

The Sunda megathrust is a 5,500 km long fault extending from Myanmar to Australia, located at the convergent plate boundary between the Eurasian and Indo-Australian plates. It is a highly seismogenic structure responsible for numerous great and giant earthquakes, including the 2004 Indian Ocean earthquake and tsunami that killed over 227,000 people. The fault can be divided into the Andaman Megathrust, Sumatra(n) Megathrust and Java(n) Megathrust, with the Bali-Sumbawa segment being less active. Earthquakes occur along the megathrust and within both subducting and overriding plates, with the largest earthquakes generated when the megathrust itself ruptures, often on separate "patches" along the megathrust surface.learn more on wikipedia