2:45 PM - 3:00 PM
[SCG49-05] Determining the temporal and spatial seismic sequence with RSQSim in southwestern Taiwan
Keywords:RSQSim (Rate-and-State Earthquake Simulator), Seismic sequence, Fault interaction, Stress transfer, Seismic hazard assessment
Southwestern Taiwan is located in a tectonically active region where the Philippine Sea Plate converges with the Eurasian Plate, producing significant crustal deformation and leading to frequent seismic events. In order to better understand the temporal and spatial characteristics of earthquake sequences in this region, we utilize RSQSim (Rate-and-State Earthquake Simulator), a physics-based computational model that simulates seismicity by incorporating frictional properties on faults governed by rate-and-state friction laws. This approach represents an advancement over traditional empirical or statistical models, as it explicitly considers dynamic rupture processes, stress interactions, and fault heterogeneity to generate synthetic catalogs of seismic events. In contrast to standard probabilistic seismic hazard assessments, the RSQSim approach captures critical physical processes that govern earthquake nucleation, propagation, and triggering, allowing for a more realistic representation of how seismic events unfold over time. Moreover, the model results underscore the need for continued refinement of regional fault geometry and frictional parameters, as uncertainties in these inputs directly affect seismic events. This work demonstrates the utility of RSQSim in illuminating complex fault interactions and earthquake recurrence patterns in southwestern Taiwan. By integrating geological, geophysical, and computational approaches, researchers, engineers, and policymakers gain a more robust framework for evaluating seismic risk, optimizing earthquake preparedness strategies, and guiding long-term urban planning in this seismically active region.