Aftershocks still rattle east Japan four years after megaquake

March 11, 2015 11:45 AM

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TOKYO, March 11 (Reuters) - Four years after a magnitude 9 earthquake shook northern and eastern Japan, the region is rocked by tremors at more than double the average rate of the decade before the disaster, a report this week from the Japan Meteorological Agency shows.

In the latest 12 months there were 737 quakes registering at least "1" on the Japanese intensity scale of 1-7 in the quake zone, which runs more than 500 km (300 miles) from Tokyo's eastern suburbs up the northeast coast nearly to the northern tip of the main island of Honshu.

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