Maps and details of stations, seismogram viewer, and seismic data access Hazard calculator, maps and publications. Where data from different agencies for the same earthquake is available, you can find and compare the often differing data for magnitude, depth etc In the detail page for each quake. A powerful earthquake, with an upgraded magnitude of 6.9 and a depth of about 12 miles, struck off the coast of northern japan, according to the japan meteorological agency. Updated every 2 minutes with accurate data.
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