Figure 1: Seismotectonics of Central Philippines. Past Palawan earthquakes are plotted. The largest event on record that occurred near Palawan is the 1940 magnitude 5.9 earthquake (unfilled circles). Other notable earthquakes that affected Palawan are also shown (yellow stars), including the 1897 magnitude 7.5 earthquake and the 1940 magnitude 6.8 earthquake. This map highlights the rare occurrence of earthquakes in Palawan relative to the other parts of the Philippines. The dashed line represents the transect of the seismic reflection profile shown in Figure 3. Inset: EP – Eurasian Plate, PMB – Philippine Mobile Belt, and PSP – Philippine Sea Plate. Data sources: Historical earthquake locations from SEASEE (1985) and Bautista and Oike (2000); instrumental earthquake locations from PHIVOLCS, ISC, and NEIC; focal mechanisms and location of active faults and trenches from PHIVOLCS; and SAR-derived topography and high-resolution bathymetry from NAMRIA (2013).

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Figure 1: Seismotectonics of Central Philippines. Past Palawan earthquakes are plotted. The largest event on record that occurred near Palawan is the 1940 magnitude 5.9 earthquake (unfilled circles). Other notable earthquakes that affected Palawan are also shown (yellow stars), including the 1897 magnitude 7.5 earthquake and the 1940 magnitude 6.8 earthquake. This map highlights the rare occurrence of earthquakes in Palawan relative to the other parts of the Philippines. The dashed line represents the transect of the seismic reflection profile shown in Figure 3. Inset: EP - Eurasian Plate, PMB - Philippine Mobile Belt, and PSP - Philippine Sea Plate. Data sources: Historical earthquake locations from SEASEE (1985) and Bautista and Oike (2000); instrumental earthquake locations from PHIVOLCS, ISC, and NEIC; focal mechanisms and location of active faults and trenches from PHIVOLCS; and SAR-derived topography and high-resolution bathymetry from NAMRIA (2013).

Figure 1: Seismotectonics of Central Philippines. Past Palawan earthquakes are plotted. The largest event on record that occurred near Palawan is the 1940 magnitude 5.9 earthquake (unfilled circles). Other notable earthquakes that affected Palawan are also shown (yellow stars), including the 1897 magnitude 7.5 earthquake and the 1940 magnitude 6.8 earthquake. This map highlights the rare occurrence of earthquakes in Palawan relative to the other parts of the Philippines. The dashed line represents the transect of the seismic reflection profile shown in Figure 3. Inset: EP – Eurasian Plate, PMB – Philippine Mobile Belt, and PSP – Philippine Sea Plate. Data sources: Historical earthquake locations from SEASEE (1985) and Bautista and Oike (2000); instrumental earthquake locations from PHIVOLCS, ISC, and NEIC; focal mechanisms and location of active faults and trenches from PHIVOLCS; and SAR-derived topography and high-resolution bathymetry from NAMRIA (2013).

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