The map is the best medium that can be used in presenting geographic information. By just looking at a map, we can know the location of a place, an object or any other thing that can be located on the face of the Earth.

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) knows the usefulness of maps that is why the agency generates maps that contain information related to seismic and volcanic activities. PHIVOLCS teamed up with Kyoto University to create maps that shows the location of fault lines in the different parts of the Philippines.

The location of fault lines was determined using images obtained via aerial photography. Satellite images were also used. The final PHIVOLCS fault line maps were plotted on the 1:50,000 scale topographic maps produced by the National Mapping and Resource Information Authority (NAMRIA).

PHIVOLCS fault line maps are available from the agency's website.

Unfortunately, only some parts of the Philippines are covered by PHIVOLCS fault line maps. The agency is still in the process of collecting data that can be use in the creation of the fault line maps.

Here are the areas covered by PHIVOLCS fault line maps, as viewed on the agency's website on September 26, 2012:

1. Northern Luzon area, which includes Laoag City (Click here to see the map)
2. Central Luzon area (Click here to see the map). This area is covered by 6 map sheets.
3. Infanta, Quezon (Click here to see the map)
4. Guinayangan (Click here to see the map)
5. Bondoc Peninsula (Click here to see the map)
6. Masbate Island (Click here to see the map). this area is covered by 4 map sheets
7. Leyte Island (Click here to see the map)
8. Eastern Mindanao (Click here to see the map)

Take note that the PHIVOLCS fault line maps are in PDF.

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