MANILA -The Davao Trench last moved in 1917 which had a magnitude of 6.4. Its most recent movement was early morning last Saturday at magnitude 7.2 with a depth of 57 kilometers.
An intensity-6 quake was felt in General Santos City, Sarangani, Davao Occidental and Glan, Sarangani and intensity-2 quake was felt in Kidapawan.
“When we say trench, the focus where the quake from is deeper. So what possibly made it move is the Davao Trench,” PHIVOLCS Science Research Specialist Mayleen Enriquez said.
The Philippines is within the Pacific Ring of Fire where a lot of earth quakes and volcanic eruptions have been recorded.
“It surrounds the Pacific but there are various faults or systems there which may move although they are not interconnected,” Enriquez added.
The last movement of the West Valley Fault was recorded in 1658. It has a 100-kilometer stretch from Bulacan, Metro Manila, Cavite down to Laguna.
“If magnitude 7.2 happens it West Valley Fault, an intensity 8 is possible so it is strong and it would cause many damages because of the vast structures and populated area,” Enriquez stated.
Based on a study conducted by PHIVOLCS in 2013, 48,000 people may die if a 7.2-magnitude earthquake hits Metro Manila.
PHIVOLCS reminds the public to prepare for the possible movement of the West Valley Fault. – Rey Pelayo | UNTV News & Rescue
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