Using Coulomb Stress Changes and Seismic Spectrum Intensities Evaluation of the Seismic Hazard Potential of Meishan Earthquake in Central Taiwan

The earthquake (ML5.2) which occurred at Chushan town, Nantou on Nov.11, 2017 resulted many aftershocks around the hypocenter of mainshock. coulomb stress changes (∆CFSs) by mainshock demonstrated most located within portions with ∆CFSs greater than 0.1 bar, revealing may be induced After investigating different depths, results showed positive values under depth 15km were transferred to southeast and southwest regions. About ten days later, there earthquakes (ML5.2~3) below clustered exactly in region. region near Meishan fault, caused large ML7.0 before 110 years ago. This means fault triggered successive fault. Based seismic spectrum intensities, hazards potential are estimated. maximum intensities will occur township segment freeway 3 connecting city damaged seriously. landslides happen again junctions Yunlin counties, where great happened when Chi-Chi (ML7.3) 1999.