There are also other potentially active faults in Masbate, including the Uson Fault and Southern Masbate Fault. Like the Guinayangan Fault, Masbate Fault is also a segment of the PFZ. Masbate is considered a seismically active region in the country, which explains the frequent quakes in the area. The latter tells the strength of the ground shaking, determined by the quake’s effects on people and structures. The former measures the energy released at the earthquake’s source. Important to note: Magnitude and intensity measure different characteristics of an earthquake. During this event, intensity eight ground shaking was recorded in the areas of Guinayangan, Calauag, and Lopez in Quezon. The Guinayangan Fault can generate high-intensity quakes and was the cause of the magnitude 7 Ragay Gulf Earthquake. Beyond this, the Philippines is also home to inter-related geological faults that include the following: Guinayangan FaultĪccording to the 2020 data from the Philippine Institute of Volcanology and Seismology (PHIVOLCS), the Guinayangan Fault is an active fault traversing Quezon Province’s central portion, and is also a part of the PFZ. Most Notable Fault Lines in the Philippinesįrequent ground shaking happens in the country because of its position along the Pacific Ring of Fire, which makes it vulnerable to quakes and volcanic eruptions and explains why we have 24 active volcanoes in the country. The PFZ has been the source of massive earthquakes in recent years, including the magnitude 7.7 Luzon quake (1990) and magnitude 6.2 Masbate earthquake (2003). The Philippine fault zone starts from northwestern Luzon and ends in southeastern Mindanao, traversing the following areas: One explanation for why we experience several destructive quakes is the existence of the Philippine Fault Zone (PFZ), a 1,200-kilometer (km) tectonic feature that runs across the country. To learn more about the nearest fault in your city, check out the Philippine fault line map below: Philippine Fault Zone To determine if your current or future property stands in an earthquake-prone area, you can use PHIVOLC’s FaultFinder app to see if there are faults near you. Getting home insurance is an excellent step to ensure that you don’t lose your investment, especially if you live near the fault line. Such lines are located in places where two tectonic plates meet and where earthquakes could wreak much havoc. Hence, one cannot dismiss the danger of living near earthquake fault lines. It was also estimated that the overall property damage cost several million dollars. An intensity eight earthquake jolted the town of Casiguran, Aurora, and severely impacted Metro Manila, where major buildings sustained varying levels of damage. In the Philippines, the most destructive quake happened in 1968. But what about higher-intensity earthquakes? Experts revealed that magnitude 2 and smaller earthquakes happen over a hundred times daily. Most Notable Fault Lines in the PhilippinesĮarthquakes always happen somewhere, but this doesn’t mean you should be unconcerned when discussing such occurrences.
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