The geography of these islands around the epicenter of 9 magnitude earthquake occurred on the night of 26 / 12 / 2004 has been slightly modified.
Indeed, along a rupture zone 400 km long, the ribs are moved about twenty meters.
The jolt "gave 3 minutes and 20 seconds of continuous vibration in the epicentral region, it's colossal," said Paul Tapponnier, director of tectonic lab at the Institute of Globe Physics (IPG).
"The maximum value of the sliding of the fault to the southwest is 20 meters over forty kilometers, and 15 meters, distributed over more than 100 km long," said this scientist.
"There were also vertical movements, which could reach in some places one or two meters," added the researcher, and land has risen, especially in the region of Siberut, an island at 100 km to West Sumatra.
The hoof cracks also shape the landscape
"All earthquakes change the landscape. The earthquake is truly the architect of the landscape. All the mountains we know have been shaped by earthquakes, "explains Paul Tapponnier.
"The last great Chile earthquake (1960) moved the 20 landscape and during a massive 1964 earthquake in Alaska, we saw islands rise up, and oyster beds were found at 12. meters above the tide level, "says the scientist.
An earthquake in the Guadeloupe 21 November, with a magnitude of 6,3, and the tidal consecutive tide moved the bottom of the ocean a few tens of centimeters, notes Mr. Tapponnier.
"Here we are dealing with an earthquake more than 1.000 times more powerful (than Guadeloupe) and naturally these disasters radiate enough energy to give an impetus to the Earth," said Paul Tapponnier.
Like all major earthquakes on Sunday earthquake in South Asia has shaken the planet like a hammer on a bell, and seismologists still record the waves of the main shock.
However, despite the tremendous energy released, such an earthquake will not significantly alter the map of Asia, or even the Earth's orbit.