Fig. 4.From: Seismicity near the hypocenter of the 2011 off the Pacific coast of Tohoku earthquake deduced by using ocean bottom seismographic dataHypocenter distribution. The dark gray and black dots show the relocated hypocenters of 2011 earthquakes before and after the 2011 mainshock. Light gray dots show the earthquake that occurred between 2004 and 2009 (background seismicity). (a) Map view. (b) Cross section of the rectangle shown in the map view.Back to article page