If you find the philippine institute of volcanology and seismologys phivolcs valley fault system vfs atlas too daunting, heres a userfriendly and interactive map to see if your home or place of work is found in a quake fault zone. Phivolcs launched a map or a valley fault system vfs atlas to help the individual to determine if their location is located in the fault. The west napa fault is a 57 km 35 mi long geologic fault in napa county, in the north bay region of the san francisco bay area in northern california. The newer and taller buildings are more secured from the anticipated movement of the west valley fault.
Like the wasatch fault zone, the west valley fault zone shows evidence of recurrent movement in the geologically recent past i. This fault is also known as the valley fault system and is divided into two segments, the west valley fault and the eastern valley fault. I am curious but i cant find any exact location published, like specific residential areas. The west valley fault zone wvfz and salt lake city segment slcs of the wasatch fault zone comprise holoceneactive normal faults that bound an intrabasin graben in northern salt lake valley, utah. The valley fault system vfs, an active fault in the greater metro manila area gmma, consists of two segments. The west valley fault zone certainly represents a surface fault rupture hazard. The evf is about 10km long and traverses the municipalities of rodriguez and san mateo in rizal province. Phivolcs and gma news online have downloadable copy of the valley fault system atlas on scribd. West valley fault news update this is a followup on the last post i did how an earthquake fault line actually looked. Its closer than we think general elmo san diego ret, head of the department of public order and safety of the quezon city government, did not mince words about the grave danger posed by the west valley fault system that runs underneath the streets, houses, and backyards of metro manila residents. Pdf barangays and buildings traversed by the valley. It extends from dingalan, aurora in the north and runs through the. Pdf neotectonics of the marikina valley fault system.
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 strikeslip motion. This web app is a product of the joint collaboration between the philippine institute of volcanology and seismology phivolcs, philippines and geological survey of japan gsj, japan. Geology and structure of the rough creek area, western. The west valley fault map according to phivolcs, metro manila will get hit by a 7. Vivienne gulla, abscbn news updated as of jun 22 11. Interactive map for the west and east valley fault line on.
Interactive risk analysis map of the valley fault system earthquake last june 20, phivolcs has released a series of risk analysis scenario maps pertaining the west valley fault system in case its movement triggers a large earthquake within metro manila. Directors ruben maria soriquez paolo bertola special effects cgi paolo bertola editing ruben maria soriquez original soundtrack. As mentioned in that post, research and study are being made, and corollary to that is the finding based on a recent report on a. Also, there are specific locations that are considered most vulnerable to saidearthquake because of their proximity the socalled west valley fault. To think, the muchanticipated movement of the west valley fault is long overdue, and phivolcs now is not discounting the 1754 scenario of violent eruption from happening.
Fault system, the moormaneagle valley syncline, the pennyrile fault system, and faults of the illinoiskentucky fluorspar district. The west valley fault zone is separate from, but related to the wasatch fault zone, which is the regions 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. The death valleyfurnace creek fault system of eastern california and western nevada fig. Do you want to be notified on new updates about job opportunities, free seminars, trainings, scholarship, and latest government memorandum circulars. West valley fault philippine institute of volcanology and seismology director renato solidum jr. 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. Launched on monday, may 18, the valley fault system atlas is a handbook with 33 map sheets of cities traversed by the east valley fault and west valley fault. Phivolcs launch map, valley fault system to guide users. Repeated fault movements during earthquakes have formed the mountains to the east and the valleys to the west. The relationship of the west valley fault zone to the salt lake city segment of the wasatch fault zone remains uncertain.
The west valley fault extends northeastwards into the province of bulacan and passes very close to the 40 year old angat dam. No segment of the metro manila subway project would run over the west valley fault, the philippine institute of volcanology and seismology phivolcs has assured the. It is one of the service agencies of the department of science and technology. Geological survey petroleum geology and the distribution of conventional crude oil, natural gas, and natural gas liquids, east texas basin by r. Both fault zones have evidence of recurrent, holocene. Phivolcs launch map, valley fault system to guide users ensuring safety. Interactive risk analysis map of the valley fault system. Rappler found that 57 subdivisions or residential villages are transected by the west valley fault, a 100kilometer active fault that can generate a 7.
West valley fault movement most likely to affect low, mid. I was suppose to offer the property to a client, but decided to first check the location of the property with the phivolcsvalley fault system maps just to make sure the property doesnt straddle on an earthquake fault line. The higherresolution copy is available for free download from the phivolcs website. News, commentaries, updates, survival tips, safety guidelines and community page for the big one. The wasatch fault zone quakes occur on normal faults that dip at an angle under the valley to the west. Valley fault system vfs in the philippines, is a dominantly dextral strikeslip fault system that extends from dingalan, aurora in the north and runs through the cities of quezon, marikina. Earthquake hazard evaluation of the west valley fault zone. Residential buildings will suffer the most damage from a 7. Predictive forensics for averting possible disasters.
Incase, your mapping of the west valley fault system is lessaccurate ipagpalagay lang po natin, still the existence of the west valley fault system is a posing danger if it is trailing within the heart of metropolitan manila. Prepare for the big one dost makes valley fault atlas. The vfs is an active fault system in the greater metro manila area gmma composed of two fault segments. Here are some of the fault lines included in this system. Thus, the publication of the valley fault system vfs atlas, a handbook of largescale maps detailing the situs of the 100kilometerlong west valley and the 10ki ometerlong east val ey segments of the vfs in the metro luzon urban be tway super reg on, is a welcome and significant. Map and data for quaternary faults in west texas and. This new mapping provides additional data to scientists studying how the west valley and wasatch fault zones are linked, stated map author adam mckean. There is also a set of downloadable pdf files at the national disaster risk reduction and management council website. Deadliest earthquake in the philippines did you know that the deadliest earthquake that ever happened in the philippines occurred on august 16, 1976. Map and data for quaternary faults in west texas and adjacent parts of mexico edward w. The santa monica fault is part of the transverse ranges southern boundary fault system, a westtrending system of reverse, obliqueslip, and strikeslip faults that extends for more than 200 km along the southern edge of the transverse ranges dolan et al. This fault system consists of two subparallel, northeasttrending faults. Since earthquake is very impossible to predict, phivolcs is here to guide us. Phivolcs says subway project runs parallel but not on fault line.
The west valley fault system is an imaginary line marking the area where the different fault systems are located underground and are actively moving from where a big earthquake may originate. How big and how frequent are earthquakes on the wasatch fault. One of the dykes of the dam is actually believed to have been built on top fault system splays. The philippines is one of the densely populated country in the world with over 337 persons per square kilometer. Neotectonics of the marikina valley fault system mvfs and tectonic framework of structures in northern and central luzon, philippines article pdf available in tectonophysics 41514. It is believed to be the northern extension of the calaveras fault in the east bay region it has been mapped as a late pleistoceneholocene active fault, and is considered to be predominantly a right lateral strikeslip fault.
My father told me our subdivision was developed on a fault line. West valley fault line update, quezon city, philippines. Taal volcano lies on the west valley fault secrets of. Bandibas of gsj with the cooperation of the research and development personnel of phivolcs. But unlike the wasatch fault zone, which has been the subject of dozens of detailed scientific studies, relatively little is known about the behavior of the west valley fault zone. Most of the population is situated in metro manila with roughly 21,000 per square kilometer density in an area of over 600 square. List of barangays near the east and west valley fault. The rough creekshawneetown fault system, which extends from western kentucky into southeastern illinois, where it is called the shawneetown.
The philippine institute of volcanology and seismology phivolcs launched an application or tool, aiming to help its users to check if their homes can are located in the fault areas, which has a greater. As of the meantime, disaster resiliency assessors have been saying that the country. Evaluating the seismic relation between the west valley. This was seen on television yesterday, may 18, 2015, on gma 7 and also on abscbn.
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