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

该奖项是根据2009年美国恢复和再投资法案(公法111-5)资助的。该项目的目标是利用千万亿级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。在他们目前的PetaApps奖的科学和技术成就的基础上，PI将通过他们对地震系统科学的持续发展，将更好的理论和数据纳入他们的地震模拟中。地震系统科学展示了地球科学中一些最具挑战性的计算途径。从头到尾来看，地震问题包括构造断层的加载和破坏、地震波的产生和传播、地表场地的响应和？在地震风险方面的应用？地震对建筑环境造成的破坏。南加州地震中心的社区建模环境是一个使用美国国家科学基金会S TeraGrid高性能计算设施研究地震系统的大型协作室。通过一系列赠款，NSF/EAR和NSF/OCI资助了CME合作，以开发一个综合的网络设施？佩塔莎？使用美国国家科学基金会S最有能力的计算中心执行基于物理的SHA计算和管理产生的数据量。在这个项目中，私人投资机构将继续进行PetaShake平台(一种新的千万亿级能力计算平台)的CME开发。除了将他们的模拟推向千万亿级之外，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级资源，以做出关于地震的科学验证的推断。

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.