Three undersea quakes hit southern Philippines

16:03, July 27, 2010      

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Three undersea tremors hit southern Philippines Tuesday but there were no reported casualties and no tsunami alert either, the United States Geological Survey (USGS) said.

The first magnitude 5.0 quake, which occurred around 12: 37 a.m. local time, had a depth of 604.6 kilometers. The epicenter was estimated at 85 kilometers southwest of this city.

The second quake was stronger at a magnitude of 5.7 and occurred at 7:06 a.m. The epicenter was estimated at 130 kilometers east southeast of Zamboanga or 135 kilometers west southwest of Cotabato. The quake also had a depth of 659.9 kilometers.

At 12:51 pm, another 5.1 magnitude tremor, with the epicenter of 65 kilometers southwest of this city and had a depth of 596.8 km, occurred in some parts of Mindanao.

The Philippines sits on the Pacific "Ring of Fire" where continental plates collide causing frequent seismic and volcanic activity. The worst earthquake in the country happened on August 16, 1976 after a tsunami killed between 5,000 and 8,000 people in the Moro Gulf region in southern Philippines.

Source: Xinhua


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