Xiaofei Chen The Applications of Computational Seismology on Hazards Mitigation
Xiaofei Chen - Southern University of Science and Technology, China
Session chair: Haohuan Fu

Abstract : The threat and the risk caused by earthquakes are becoming more and more serious as the highly developing society. How to effectively mitigate the casualties and economic loss are the urgent problems needed to be solved for our country and other places exposed to serious risk caused by earthquakes. By combing of the knowledges of earthquakes and capability of supercomputers, computational seismology can be used to investigate the occurred destructive earthquakes and simulate the scenarios of potential earthquakes. In the past decades, we developed a powerful numerical method to solve the rupture dynamics, strong ground motion under the real complex conditions, such as the irregular topography, non-planar fault, and heterogeneous media. With helps from supercomputers, we can use this method to investigate seismic hazards with much fine resolutions and high accuracy if we have enough computing capability. It is lucky that more and more computing resource can be available due to the supercomputer developing, which enables us to investigate earthquakes with high spatial and temporal resolutions. One of the examples is the Nonlinear Tangshan earthquake simulations on Sunway TaihuLight, enabling us to investigate the seismic hazards in the frequency up to 18 Hz and resolution of 8 m. These studies of computational seismology could help us to understand the causes of seismic hazards, and provide scientific basis for designating and implementing the effective mitigating measures to seismic hazards.