Outward on the Spiral: Petascale Inference in Earthquake System Science (SCEC PetaShake Project)

该奖项是根据2009年美国复苏和再投资法案（公法111- 5）资助的。该项目的目标是使用千万亿次计算资源将基于物理的地震危险性分析（SHA）提升到一个新的水平。 在当前PetaApps奖的科学和技术成就的基础上，PI将通过继续发展地震系统科学，将更好的理论和数据纳入地震模拟中。地震系统科学提出了地球科学中一些最具挑战性的计算途径。 从端到端，地震问题包括加载和破坏的构造断层，地震波的产生和传播，地面网站的反应，和？在地震风险中的应用地震对建筑环境造成的破坏。 这些途径涉及各种各样的相互作用，一些高度非线性和多scale.The社区建模环境（CME）的南加州地震中心（SCEC）是一个大型的合作实验室调查地震系统使用NSF？的TeraGrid设施，用于高性能计算（HPC）。 通过一系列的赠款，NSF/OCI和NSF/OCI资助了CME协作，以开发一个综合的网络设施？PetaSHA？用于执行基于物理的SHA计算并使用NSF管理由此产生的数据量？最强大的计算中心。 在这个项目中，PI将继续CME开发PetaShake平台（一个新的千万亿次能力计算平台）。 除了将他们的模拟推向千万亿次之外，PI还将为PetaShake平台配备一套新的模拟分析工具，这些工具将用于应用千万亿次资源对地震进行科学验证的推断。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5.The goal of this project is to take physics-based seismic hazard analysis (SHA) to a new level using petascale computational resources. Building on the scientific and technical successes under their current PetaApps award the PIs will incorporate better theory and data into their earthquake simulations through their continued development of Earthquake system science.Earthquake system science presents some of the most challenging computational pathways in geoscience. Taken from end to end, the earthquake problem comprises the loading and failure of tectonic faults, the generation and propagation of seismic waves, the response of surface sites, and ? in its application to seismic risk ? the damage caused by earthquakes to the built environment. These pathways involve a wide variety of interactions, some highly nonlinear and multiscale.The Community Modeling Environment (CME) of the Southern California Earthquake Center (SCEC) is a large collaboratory for investigating earthquake systems using NSF?s TeraGrid facilities for high performance computing (HPC). Through a series of grants, NSF/EAR and NSF/OCI have funded the CME Collaboration to develop an integrated cyber facility ? PetaSHA ? for executing physics-based SHA computations and managing the resulting data volumes using the NSF?s most capable computing centers. In this project, the PIs will continue CME development of the PetaShake platform (a new petascale capability-computing platform). In addition to pushing their simulations toward petascale, the PIs will equip the PetaShake platform with a new set of simulation-analysis tools that will be needed in applying petascale resources to make scientifically validated inferences about earthquakes.