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Tectonic setting of the Philippines. Map showing the tectonic structures in the Philippines, the Philippine fault (solid black line, Tsutsumi and Perez 2013) and epicenters (circles) of moderate to large magnitude earthquakes (Bautista and Oike 2000).
Source publication
The Philippine fault is one of the major earthquake sources in the Philippines that had generated large damaging earthquakes in the past four centuries. This 1250-km-long left-lateral strike-slip fault traverses the entire Philippine archipelago from northwestern Luzon Island in the north to eastern Mindanao in the south. In this paper, we will dis...
Contexts in source publication
Context 1
... Philippine fault is one of the major earthquake generators not only in the Philippines but also in the world (Figure 1). This active fault is comparable to other major strike-slip faults such as the San Andreas fault in California, USA (Sieh 1978a;1978b), the Median Tectonic Line in Japan ( Tsutsumi and Okada 1996), the North Anatolian fault in Turkey (Jolivet and Faccenna 2000;McClusky, et al. 2000) and the Sumatran fault in Indonesia ( Sieh and Natawidjaja 2000). ...
Context 2
... Philippine fault is about 1250-km-long and traverses the entire Philippine archipelago from northern Luzon Island in the north to eastern Mindanao in the south (Allen 1962;Aurelio 2000;Barrier et al. 1991;Tsutsumi and Perez 2013). This NNW-trending, arc-parallel fault is a result of the oblique subduction of the northwest moving Philippine Sea plate beneath the Philippine archipelago ( Figure 1). The structural and geometric features of the Philippine fault has been identified since the middle of last century and studies have been conducted to describe its structural characteristics but more detailed studies should be done to better understand its surface-rupturing behavior, recurrence interval and earthquake generation potential. ...
Context 3
... Philippine fault has been a major source of large damaging earthquake in the country and has been seismically active for the past 200 years with more than 10 earthquakes greater than magnitude 7 (Bautista and Oike 2000) (Figure 1). One of the largest and most destructive was the 1990 Mw 7.7 Luzon earthquake accompanied by about 120-km-long surface-rupture with 6 m maximum left-lateral horizontal displacement ( Nakata et al. 1996). ...
Context 4
... available large-scale aerial photographs and active tectonics studies, Tsutsumi and Perez (2013) have mapped the 90% of the surface trace of the Philippine fault in a 1:50000-scale topographic map. They have described the geometry, distribution and characteristics of the Philippine fault in major islands in the Philippines (Luzon, Masbate, Leyte and Mindanao) (Figure 1). Tsutsumi and Perez (2013) also discussed the along-strike variation in fault trace geometry wherein they have suggested that the Philippine fault in central Luzon and Mindanao Islands is higly segmented and can generate earthquakes with magnitudes greater than 7. ...
Context 5
... Philippine fault is one of the major earthquake generators not only in the Philippines but also in the world (Figure 1). This active fault is comparable to other major strike-slip faults such as the San Andreas fault in California, USA (Sieh 1978a;1978b), the Median Tectonic Line in Japan ( Tsutsumi and Okada 1996), the North Anatolian fault in Turkey (Jolivet and Faccenna 2000;McClusky, et al. 2000) and the Sumatran fault in Indonesia ( Sieh and Natawidjaja 2000). ...
Context 6
... Philippine fault is about 1250-km-long and traverses the entire Philippine archipelago from northern Luzon Island in the north to eastern Mindanao in the south (Allen 1962;Aurelio 2000;Barrier et al. 1991;Tsutsumi and Perez 2013). This NNW-trending, arc-parallel fault is a result of the oblique subduction of the northwest moving Philippine Sea plate beneath the Philippine archipelago ( Figure 1). The structural and geometric features of the Philippine fault has been identified since the middle of last century and studies have been conducted to describe its structural characteristics but more detailed studies should be done to better understand its surface-rupturing behavior, recurrence interval and earthquake generation potential. ...
Context 7
... Philippine fault has been a major source of large damaging earthquake in the country and has been seismically active for the past 200 years with more than 10 earthquakes greater than magnitude 7 (Bautista and Oike 2000) (Figure 1). One of the largest and most destructive was the 1990 Mw 7.7 Luzon earthquake accompanied by about 120-km-long surface-rupture with 6 m maximum left-lateral horizontal displacement ( Nakata et al. 1996). ...
Context 8
... available large-scale aerial photographs and active tectonics studies, Tsutsumi and Perez (2013) have mapped the 90% of the surface trace of the Philippine fault in a 1:50000-scale topographic map. They have described the geometry, distribution and characteristics of the Philippine fault in major islands in the Philippines (Luzon, Masbate, Leyte and Mindanao) (Figure 1). Tsutsumi and Perez (2013) also discussed the along-strike variation in fault trace geometry wherein they have suggested that the Philippine fault in central Luzon and Mindanao Islands is higly segmented and can generate earthquakes with magnitudes greater than 7. ...
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Citations
Liquefaction is one of the earthquake-related hazards commonly experienced during earthquake occurrences in the Philippines. A database of liquefaction occurrences in the Philippines was developed through the analysis of historical documents, reports, catalogs, newspaper articles, and eyewitness interviews. A total of 808 liquefaction accounts were analyzed—798 of which were induced by 110 earthquakes that occurred from 1619 to 2020, with magnitudes ranging from M 5.1 to 8.3. The database also contains three undated liquefaction accounts from paleoseismic investigations, and seven liquefaction accounts related to four volcanic eruptions. The liquefaction occurrences in the accounts were analyzed in terms of their location quality, liquefaction features, probability ranking, and geomorphic units. We observed that liquefaction can occur repeatedly at the same sites that liquefied during past earthquakes and volcanic activities. This database may be used for seismic hazard studies and disaster risk reduction and mitigation purposes.
