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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. 9 |: |7 O* G6 C }
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. 6 M `5 p& Y- W& u. Q3 t
It struck in the South China Sea off the west coast of Mindoro island at 2:23 p.m. local  (0623 GMT). / v8 K" m& i% m# I; `
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. # {$ b' l0 Q C& K f! y
"It would have to be at least 6.5 magnitude to generate a tsunami," he said over local radio.
\; m5 e% p4 T0 E0 y1 ^/ r0 `1 qThe earth's disturbance occurred about 50.1 kilometers (31.1 miles) beneath the surface, according to a U.S. Geological Survey advisory.
* I7 s' ~' m) O: J9 m4 k" VIt gave the center at a spot about 30 kilometers off Calintaan, a western Mindoro town of 24,000 people. ^1 e9 J% C- J- t
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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
