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Why the Cebu quake was more destructive than the one in Davao Oriental
A magnitude-6.9 earthquake in Cebu caused more devastation than a magnitude-7.4 earthquake in Davao Oriental due to its shallower depth of 5 kilometers, according to PHIVOLCS Director Teresito Bacolcol.
The Cebu earthquake affected over 201,000 families and damaged nearly 80,000 houses, while also resulting in at least 70 deaths.
In contrast, the magnitude-7.4 and 6.9 earthquakes in Davao Oriental, which occurred at a depth of 23 kilometers, resulted in at least seven deaths and impacted a smaller number of families and houses.
Bacolcol explained that shallower earthquakes tend to be more destructive because seismic waves lose less energy as they travel a shorter distance to the surface.
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The Philippine Institute of Volcanology and Seismology (Phivolcs) has recorded 808 aftershocks following separate offshore earthquakes that struck Manay, Davao Oriental.
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