Fig. 1.From: Source model for generating strong ground motions during the 2011 off the Pacific coast of Tohoku EarthquakeDistribution of aftershocks more than JMA magnitude (Mj ) 4 for a day after the mainshock. The divided regions in the background map show the source regions for estimating probabilities of earthquake occurrences by the Earthquake Research Committee (2009), separately. The epicenter of the mainshock is shown as Mw 9.0 by the largest circle.Back to article page