Recent quakes in Japan

Japan is one of the most active seismic areas in the world. More than a thousand earthquakes of 4.0 magnitude or greater have struck in and around the country since 2009.

SOURCES: USGS; NOAA; Robert Stern, professor of geoscience at the University of Texas at Dallas; Bruce Shaw, geophysicist at Columbia University; Kyodo News, GoogleEarthPro, Incorporated Research Institutions for Seismology.

GRAPHIC: Wilson Andrews and Dan Keating - The Washington Post. Published March 11, 2011.