Phivolcs study: the Marikina Valley Fault System

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The study recommended that disaster preparedness plans and contingency measures should be thoroughly reviewed and re-evaluated to incorporate the implications of a large-magnitude earthquake on the Valley Fault System

The Philippine Institute of Volcanology and Seismology (Phivolcs) published in 1997 a comprehensive look at the geography of the Valley Fault System in Eastern Metro Manila. The objectives of the study were:

  1. To evaluate recent activity of the MVFS using published maps;
  2. To determine the age of the latest fault movement and the extent of faulting; and
  3. To calculate long-term average fault slip-rates and recurrence intervals for the faults of MVPS

The study recommended, among other things, that disaster preparedness plans and contingency measures should be thoroughly reviewed and re-evaluated to incorporate the implications of a large-magnitude earthquake (i.e., magnitude 7) on the Marikina Valley Fault System (since renamed Valley Fault System).

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