Ground motion simulations with dynamic source and parallel computing

  • 创建时间: 2015-03-26
报告题目:Ground motion simulations with dynamic source and parallel computing 报 告 人:Benchun Duan 博士, Associate Professor, Department of Geology & Geophysics, Texas A&M University, College Station, TX 77843-3115 报告时间:2015年3月24日(周 二)10:00—12:00 报告地点:中科院计算地球动力学重点实验室会议室 中国科学院大学科研楼西楼106室 报告摘要: Ground motion simulations can provide us with detailed information of ground shaking characteristics (such as PGA, PGV) and time histories (i.e., seismograms) from past and future (e.g., scenario) earthquakes, which can be directly used for seismic hazard analysis and reduction, engineer designs, and earthquake response. In this talk, I will review recent progress and activities in ground motion simulations in the US, in particular in the SCEC (the Southern California Earthquake Center) and USGS (US Geological Survey) communities. These activities include large--‐area (e.g., Southern California) or site--‐specific (e.g., the proposed Yucca Mountain nuclear waste storage site) ground motion simulations. A trend in ground motion simulation, which is to use dynamic source to replace kinematic source in source characterization of ground motion calculation, is emerging. The need of producing high--‐frequency contents of engineering interests in simulated ground motions in large areas requires efficient parallelization of computational codes, so that large--‐scale ground motion simulations can be performed on advanced supercomputers. I will also present recent efforts on these aspects by the community, including my own group.