Contact: Barbara Wilcox
United States Geological Survey
Caption: Remote earthquakes in the six days preceding (top) and the six days following (bottom) the M=8.6 main shock in the East Indian Ocean on April 11, 2012. The color scale indicates seismic stress, with purple = zero and red = high. This graphic accompanies the September 2012 article in Nature by Fred Pollitz et al.
Credit: U.S. Geological Survey
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