The Solid Earth Dynamics (SED) program aims to monitor and analyze seismic data in order to deepen our understanding of how focal mechanisms operate in the Philippines.

SED currently works on developing theoretical methods to resolve the ambiguity between perpendicular displacements x and y at the source or focus of seismic movements.

The program's study areas include the Mindoro and Casiguran faults. With support from the U.S. Geological Survey, daily seismic data are recorded and sent to the International Seismological Center and the National Earthquake Information Center every month.

Research activities include:

• Focal mechanism research
• GPS-based crustal deformation monitoring (with JPL, Caltech)
• Geomagnetic field measurements
• Nuclear test-ban monitoring and database management for the Asia-Pacific region

Seismic Activity

The map below shows Philippine earthquakes with magnitude greater than 4.0 for the past 7 days. Use the arrow buttons to pan across the map, and the plus and minus buttons to zoom. The markers show the locations of these events, and clicking will bring up additional details. MO provides this information for the general public's viewing, but is not responsible for its ultimate use. Concerned viewers should confirm these information with official sources.

Source: US Geological Survey

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