Modeling Earthquake-Induced Ground Motions in Sedimentary Basins Using Massively Parallel Computers

该研究项目有两个目标：直接目标是利用大规模并行超级计算机生成实际的分析和计算机模型，以确定沉积盆地的三维地震反应。其目的是了解地震引起的地表运动在人口稠密的盆地中的时间和空间分布，如洛杉矶盆地或旧金山湾区。最终目标是推导出分析模型，以足够的精度提供所建造设施设计所需的地面运动。可行性研究通过调查所需的计算机需求、计算机方法和建模技术来实现这些目标。它代表了目前可用的先进计算机软件和硬件在多大程度上可以用于最终目标的基准；也是确定实现这一目标所需的进一步发展方向的一种手段。

This research program has two objectives: The immediate goal is to generate realistic analytical and computer models for determining the three-dimensional earthquake response of sedimentary basins using massively-parallel supercomputers. The aim is to obtain an understanding of the time and spatial distribution of earthquake-induced surface ground motions within populated basins, such as the Los Angeles basin, or the San Francisco Bay area. The ultimate objective is to derive analytical models that provide, with sufficient accuracy, the ground motions needed in the design of constructed facilities. This feasibility study addresses these objectives by investigating the needed computer requirements, computer methodologies, and modeling techniques. It represents a benchmark on how far currently available advanced computer software and hardware can be used toward the ultimate objective; and a means of determining the direction of further advances needed to meet this objective.