Japan Earthquake Information - Japan Meteorological Agency
Map of earthquakes in Japan showing the earthquake's observed seismic intensity and location, event date and time, and epicenter and magnitude of the earthquake.
www.jma.go.jp/en/quake
Japan Earthquake Information - USGS Earthquake Hazards Program
Provides information about recent and historic earthquakes in Japan along with tectonic data and seismicity maps. USGS also list earthquake research centers in Japan.
earthquake.usgs.gov/regional/world.php?region=Japan
Last Earthquake in Japan - USGS Earthquake Hazards Program
Providing current earthquake seismicity map and magnitude reports for quakes in Japan. From the USGS Earthquake Hazards Program.
neic.usgs.gov/neis/last_event/world_japan.html