Contact: Barbara Wilcox
bwilcox@usgs.gov
650-329-4000
United States Geological Survey

Graph of Earthquakes Before and After 2012 M8.6 East Indian Ocean Earthquake

Caption: Number of earthquakes at least M=5.5 in the eight days preceding and the eight days following the M=8.6 main shock in the East Indian Ocean on April 11, 2012. This graphic accompanies the September 2012 article in Nature by Fred Pollitz et al.

Credit: U.S. Geological Survey

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Related news release: Rare great earthquake in April triggers large aftershocks all over the globe