The province of Batanes in the Philippines is known to have a relatively lower risk of seismic activity compared to other regions in the country. Its location in the northernmost part of the Philippines makes it less prone to major tectonic movements and fault lines.
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The West Valley Fault is a fault system located in the Philippines. It is an active fault that runs primarily through the eastern side of Metro Manila and nearby provinces. The fault is capable of producing strong earthquakes that could potentially cause significant damage.
Some active faults in the Philippines include the Philippine Fault, Manila Trench, and Cotabato Trench. The Manila Trench is a subduction zone where the Philippine Sea Plate slides beneath the Philippine Plate, while the Cotabato Trench is another subduction zone in the southern Philippines. These geological features make the Philippines prone to earthquakes and tsunamis.
Davao City in the Philippines is situated near several active fault systems, with the most prominent one being the Davao segment of the Central Davao Fault. This fault system is capable of producing significant earthquakes and poses a seismic hazard to the region.
According to the book Natural Hazards, most geologist consider a particular fault to be an active fault if it has not moved during the past 10,000 years of the Holocene Epoch.
An inactive fault is a fault line that is currently not experiencing significant seismic activity. These faults may have a history of movement but have not shown recent signs of movement, making them less of a concern for potential earthquakes.