Is West Valley Fault still active?
The West Valley Fault has moved four times and generated strong earthquakes over the last 1,400 years, or once every 350 years. Considering that no event along the West Valley Fault is known after the 17th century, “it means that the active phases of the Valley Faults is approaching.”
What will happen when West Valley Fault moves?
Solidum, Jr., DOST Undersecretary for Disaster Risk Reduction and Climate Change Adaptation, said that when the West Valley Fault moved and generated a 7.2 magnitude earthquake, 34,000 people may die and will damage lifelines including water, infrastructure, roads, ports, and telecommunication.
Where does West Valley Fault start and end?
The Marikina fault line, also known as the West Valley Fault, starts from the Sierra Madre and runs through Bulacan, Rodriguez, Rizal, Quezon City, the eastern side of Metro Manila including Pasig, Taguig, Muntinlupa, San Pedro, and Sta. Rosa in Laguna and ends in Carmona, Cavite.
What is the movement of the rocks in West Valley Fault?
The west segment, known as the West Valley Fault (WVF), is one of the two major fault segments of the Valley Fault System which runs through Metro Manila to the cities of Marikina, Quezon City, Pasig, Makati, Taguig and Muntinlupa and moves in a dominantly dextral strike-slip motion.
Is Lubao fault active?
Active faults within and around the BVAC include the East Zambales and Iba faults; according to the official active faults map of the Philippine Institute of Volcanology and Seismology (PHIVOLCS) there are no other existing active faults in the area.
How far from West Valley Fault is safe?
But first, what is considered a safe distance from a fault line? PhiVolcs recommends avoiding construction within five meters on each side of a fault trace. This is equivalent to a total width of 10 meters. This is considered the ideal “10-meter wide no-build zone” in the vicinity of a fault.
What is the most active geologically active fault in the Philippines?
Marikina Valley Fault Line according to PHIVOLCS, it is the most geologically active fault line the Philippines. it has not moved to produce high intensity earthquake for at last 500 years.
What cities will be affected by the big one?
The ‘Big One’ is a hypothetical earthquake of magnitude ~8 or greater that is expected to happen along the SAF. Such a quake will produce devastation to human civilization within about 50-100 miles of the SAF quake zone, especially in urban areas like Palm Springs, Los Angeles and San Francisco.
Is Sta Rosa in fault line?
The fault is disrupted by a number of minor steep faults along its course that is reflective of the volcanic activity relative to the area. Earthquake is a hazard in Santa Rosa as the West Valley Fault traverses Barangay Sto. Domingo. Several areas in the city are susceptible to liquefaction (Figure 4-7).
What is the outcome of the movement of WVF?
In fact, a movement along the WVF may result in a 7.2-magnitude earthquake categorized as highly destructive. But Solidum said that the recent earthquake events following Taal volcano eruption might be due to the movement of the seizure or usually called as sudden movement which is why strong quakes are felt.
What is the biggest fault line in the Philippines?
The 1,200-km-long Philippine fault zone (PFZ) is a major tectonic feature that transects the whole Philippine archipelago from northwestern Luzon to southeastern Mindanao.
Is East Zambales fault active?
What happens if the west and East Valley Fault System move?
The West and East Valley Fault System span from Angat, Bulacan all the way down to Carmona, Cavite and Calamba, Laguna and is the most feared event that could hit Metro Manila in case the fault system moves as it may cause larger than 7.0 magnitude earthquake.
How old is the West Valley fault line in the Philippines?
As of the time of this writing, it has been 356 years ago and is well within the potential period of its movement. The photo above is a snapshot along the area of Muntinlupa and San Pedro, Laguna where the red line is a part of the West Valley Fault Line.
Where is the West Valley fault line in Laguna?
The photo above is a snapshot along the area of Muntinlupa and San Pedro, Laguna where the red line is a part of the West Valley Fault Line. The fault line starts at Montalban Landfill of Montalban Rizal and ends at San Lazaro Leisure Park and Casino at Carmona, Cavite.
How are the West Valley and Wasatch fault zones linked?
The West Valley fault zone is separate from, but related to the Wasatch fault zone, which is the region’s preeminent fault and lies at the base of the Wasatch Range. “This new mapping provides additional data to scientists studying how the West Valley and Wasatch fault zones are linked,” stated map author Adam McKean.
https://www.youtube.com/watch?v=IgqXSVWuLw0