Fig. 2.From: Centroid-moment-tensor analysis of the 2011 off the Pacific coast of Tohoku Earthquake and its larger foreshocks and aftershocksMap showing 88 focal mechanisms determined in this study. Symbols are plotted at the centroid locations, and their size is proportional to the moment magnitude. Gray focal mechanisms correspond to the six large foreshocks of the March 11 mainshock. Plate boundaries are from Bird (2003).Back to article page