February 6, 2012 – Earthquake Swarm Hits the Philippines: A powerful 6.7 magnitude earthquake struck the central Philippines on Monday (see map above); along with a large earthquake swarm; killing a child and triggering a local tsunami alert. The Philippine Institute of Volcanology and Seismology issued the tsunami alert for the central Philippines, saying the quake, which hit in a narrow strait just off Negros Island (see map), could trigger a 3-foot (1-meter) wave along the island’s eastern coast as well as west of Cebu City, the country’s second largest. The Pacific Tsunami Warning Center did not issue a wider regional warning. The U.S. Geological Survey said the quake was centered 44 miles (72 kilometers) north of Dumaguete city (see map) on Negros and hit at a depth of 29 miles (46 kilometers). People rushed out of schools, malls and offices during the quake. Officials in some areas suspended work and canceled classes. A child died when a concrete fence of a house collapsed in Taysan town in Negros Oriental province, said Benito Ramos, who heads the Office of Civil Defense. A mall in San Carlos city in neighboring Negros Occidental province was damaged when its windows were shattered by the shaking, he said. The quake was also felt in Cebu, where it lasted about 30 seconds. The Philippines is located in the Pacific “Ring of Fire;” along with several other major faults, where earthquakes and volcanic activity are common. A 7.8 magnitude quake, on July 16, 1990, killed 2,412 people in Luzon and caused $370 million in damages. A 7.9 magnitude quake, on August 16, 1976 near Mindanao, killed 690, injured 3,157 and caused $174 million in damages.
Here is a map of the recent earthquake swarm to hit the Philippines:
Here is a list of those earthquakes, in terms of magnitudes, dates, times, locations and depths:
Here is another view of the most recent quakes in the Negros – Cebu Region of the Philippines with the 6.7 magnitude quake highlighted.
Here is a picture of major fault zones in the Philippines:
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