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Phivolcs: Marikina West Valley Fault Line “Ripe For Movement”, Can Cause 7.2 Magnitude Earthquake at Full Capacity

By on Mar 16, 2011 in Asia, Natural Disasters, Science, World Comments
Marikina Fault Line
Marikina Fault Line
Image Credit: GMANews.tv

According to several local news sites, the Philippine Institute of Volcanology and Seismology (Phivolcs) said on Wednesday that the Marikina West Valley Fault line is already “ripe for movement” because it has not moved for the past 200 years.

“Ripe na gumalaw ang fault. Napakataas ng probability na gumalaw ito in the future, hindi lang natin masabi ng exact date and time,” (The fault is ripe for movement. The probability is very high that it will move in the future, we just cannot say the exact date and time.) Phivolcs Deputy Director Bartolome Bautista was quoted saying during a Senate inquiry on Wednesday.

Bautista said that the earthquake fault moves every 200 to 400 years. The last time it moved was 200 years ago. However, Bautista said they cannot directly determine what will trigger its movement.

According to Phivolcs Director Renato Solidium, the Marikina West Valley Fault line can cause a 7.2 magnitude earthquake at its full movement. However, Solidium clarified that such magnitude will occur only at full capacity, saying that it might also cause an earthquake at the magnitude of only 4 or 5.

A detailed map of the Marikina West Valley Fault can be downloaded at Phivolcs website. (Download link)



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