Taiwan earthquake model (TEM) for understanding of seismic hazard to risk assessment: Establishing building fragility curves using earthquake building damage data

Taiwan Earthquake Model (TEM), established in 2012, aims to understand the probability of seismic hazard and the further risk analysis by integration of the earthquake science, earthquake engineering and social science communities of Taiwan. Under the scope of TEM, we provide new insight into seismic hazard and risk assessments for Taiwan. Seismic hazard model consists of two major components: the seismotectonic model and the ground shaking model for the Probability of Seismic Hazard Assessment (PSHA) by GEM OpenQuake Engine. The disaggregation of the seismic hazard and hazard curves from TEM PSHA2015 for metropolitan cities brought the public awareness. An occurrence of a moderate earthquake with significant damage in 2016 following the publication of Taiwan PSHA map was an important alert to the government and the industrial community. We further compiled the fragility curves using the damaging data of the 1999 Chi-Chi (7.6) earthquake, and the 2016 Meinong (6.3) earthquake to justify the exiting fragility curves. The development of these fragility curves is a key to link the hazard analysis from science to risk assessment and management. We hope through this exercise, we can establish the database for seismic hazard and risk assessment, and, also for the next step on scenario based model.