Monday, September 12, 2016

Seismicity Map of the Philippines

This is a follow-up from my post on Friday, to include this awesome map and some recent data.

This map of the distribution of active faults and trenches in the Philippines clearly shows the convergence zones off both the East and West coasts of the country, crossing onto land only on the island of Mindoro. There is a collision zone mostly near the western waters of Panay, but also crossing over the southwest tip of the island. There is also a transform boundary to the northeast of Pulong Polillo in the Philippine Sea. As you can see from the map there are a multitude of faults ranging through most of the islands, the notable exception is Palawan in the West.
From the good folks at PHIVOLCS:

Recent activity from IRIS: Since September 1st of this year, there have been 9 significant earthquakes in the southern region of Mindanao, ranging from M4.6 to M5.9. The most recent was at 16:29 UTC, on September 10, 2016, a M5.3.

References: http://www.phivolcs.dost.gov.ph/, http://ds.iris.edu/seismon/eventlist/index.phtml?region=Polynesia


1 comment:

  1. great map as a follow up-thank you for posting it. It is cvery clear where the risk areas are... I loved from your other post that fact that they use singing as a method to prepare population. It seems they are putting a lot of effort into preventive measures, which is great.

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