Presentation during MOE Workshop.
Media Briefing by Director Kerry Sieh on the September 2007 earthquakes offshore Sumatra.
Animation produced by the Tectonics Observatory, California Institute of Technology. Labels modified by EOS. Read more about earthquakes and tsunamis in Sumatra at siaga.org
This cross-section image shows the origin of the September 30, 2009 earthquake (upper green star) and an aftershock.