06 February 2012 Ms 6.9 Negros Oriental Earthquake

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Countries : Philippines
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Document Type : Report
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On 06 February 2012 at 11:49 a.m. Philippine Standard Time (PST), a strong earthquake with a body-wave magnitude (Mb) of 6.9 shook the Islands of Negros, Cebu, and nearby islands of Western Visayas region. The epicenter was located by the Philippine seismic network at 9.97? N, 123.14? E, which is approximately 5 km northwest of Tayasan, Negros Oriental. The earthquake had a depth of focus of 5-10 km. Based on the hypocenter and focal mechanism solutions by the International Seismic Network (ISN), PHIVOLCS and the United States Geological Survey (USGS), the earthquake was determined to be tectonic in origin, and suggests a dominantly thrust-faulting movement along a NE-SW fault plane.