Coulomb stress change model of the magnitude 7.4 Surigao Del Sur earthquake in cross section (see Figure 1a for location), using the mainshock as source fault (thrust mechanism) and the next event (normal fault) as the receiver fault. Focal mechanism solutions of the mainshock (7.4) and 24 succeeding seismic events with magnitudes ranging from 4.9 to 6.8, other post -mainshock events of lower magnitudes and historical earthquakes are shown (small dots). Approximate trace of the subducting Philippine Sea Plate is shown. Data: Jarvis et al., 2008 for SRTM topography; Weatherall et al., 2020 for bathymetry; Toda et al., 2011 for CST modeling; PHIVOLCS for earthquake data. GMT (Wessel and Smith, 1995) was used to generate the section. See text for more discussion. Credit: Aurelio, Catugas, Anicete, 2023.

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Coulomb stress change model of the magnitude 7.4 Surigao Del Sur earthquake in cross section (see Figure 1a for location), using the mainshock as source fault (thrust mechanism) and the next event (normal fault) as the receiver fault. Focal mechanism solutions of the mainshock (7.4) and 24 succeeding seismic events with magnitudes ranging from 4.9 to 6.8, other post -mainshock events of lower magnitudes and historical earthquakes are shown (small dots). Approximate trace of the subducting Philippine Sea Plate is shown. Data: Jarvis et al., 2008 for SRTM topography; Weatherall et al., 2020 for bathymetry; Toda et al., 2011 for CST modeling; PHIVOLCS for earthquake data. GMT (Wessel and Smith, 1995) was used to generate the section. See text for more discussion. Credit: Aurelio, Catugas, Anicete, 2023.

Coulomb stress change model of the magnitude 7.4 Surigao Del Sur earthquake in cross section (see Figure 1a for location), using the mainshock as source fault (thrust mechanism) and the next event (normal fault) as the receiver fault. Focal mechanism solutions of the mainshock (7.4) and 24 succeeding seismic events with magnitudes ranging from 4.9 to 6.8, other post -mainshock events of lower magnitudes and historical earthquakes are shown (small dots). Approximate trace of the subducting Philippine Sea Plate is shown. Data: Jarvis et al., 2008 for SRTM topography; Weatherall et al., 2020 for bathymetry; Toda et al., 2011 for CST modeling; PHIVOLCS for earthquake data. GMT (Wessel and Smith, 1995) was used to generate the section. See text for more discussion. Credit: Aurelio, Catugas, Anicete, 2023.

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