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USGS: 7.2-magnitude quake off far northern Japan

April 19, 2013 at 1:17 AM

TOKYO, April 19 (UPI) -- A 7.2-magnitude earthquake was reported Friday off far northeast Japan and far eastern Russia, the U.S. Geological Survey said, but there was no tsunami alert.

The Japan Meteorological Agency measured the quake in the Pacific Ocean at 7-magnitude and said it hit just after noon local Japan time.

The USGS said the quake struck at a depth of 76 miles and was located 155 miles east-northeast of Kuril'sk, Russia, more than 320 miles northeast of Neumuro and Shibetus in Japan, and 926 miles northeast of Tokyo.

The Kuril-Kamchatka arc extends about 1,300 miles from Hokkaido, Japan, along the Kuril Islands and the Pacific coast of the Kamchatka Peninsula to its intersection near the Commander Islands, Russia. The USGS said the Kuril-Kamchatka arc is considered one of the most seismically active regions in the world, and the region frequently has experienced earthquakes of magnitude 7 or more over the past century.

In the past two days, Japan's Miyakejima Islands have been rocked by up to 40 noticeable earthquakes, including at least two Thursday, the Japan Meteorological Agency said.

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