The 2015 Ogasawara earthquake was a 7.9 magnitude earthquake which struck offshore Japan 189 km (117 mi) west northwest of Chichi-jima in the Ogasawara Islands on May 30 at a depth of 664.0 km (412.6 mi). The shaking of the earthquake was observed almost all over Japan, as it was one of the largest deep-focus earthquakes recorded worldwide.
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