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A strong quake struck at sea off the central Philippines on Friday, but there were no immediate reports of casualties or damage, seismologists said. / [ ~; s: K9 H
The U.S. Geological Survey measured the quake at 6.0, while the Philippine Institute of Volcanology and Seismology (Phivolcs) put it at 6.1. 8 l t% L; v! w7 ^1 \( k
It struck in the South China Sea off the west coast of Mindoro island at 2:23 p.m. local  (0623 GMT).
6 l7 d- D. Z/ C7 W1 \Local seismologist Ismael Narag said the quake generated enough potential power to unleash big waves, but added that the authorities did not think it was capable of triggering a tsunami so Phivolcs issued no warning.
6 a. m3 j9 O0 P: K6 c! ?"It would have to be at least 6.5 magnitude to generate a tsunami," he said over local radio. ( l5 c0 B' }2 w& E2 l0 C$ o
The earth's disturbance occurred about 50.1 kilometers (31.1 miles) beneath the surface, according to a U.S. Geological Survey advisory. 3 z6 ]8 X* n4 @: Y
It gave the center at a spot about 30 kilometers off Calintaan, a western Mindoro town of 24,000 people. C9 O& x! q5 s+ w& S% c
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发表于 2009-9-18 15:50:34
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发表于 2009-9-18 18:24:02
