Soft coral uplifted by an earthquake on the Sunda Megathrust, Sumatra
One of SuGAr GPS stations, in the Mentawai islands, offshore Sumatra.
This cross-section image shows the origin of the September 30, 2009 earthquake (upper green star) and an aftershock.
Using ancient corals to recover a history of earthquakes back to about AD 1300, scientists at the Observatory have identified three sites that are characterised by four earthquake "supercycles" in
