Community Computational Platforms for Developing Three-Dimensional Models of Earth Structure, Phase II

用于开发地球结构三维模型的社区计算平台，第二阶段

• 批准号: 1349180
• 负责人: Thomas Jordan
• 金额: $ 110万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-08-15 至 2017-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1349180&HistoricalAwards=false
• 关键词: Community; Computational; Platforms; Developing; Three

The principal investigators of this proposal are a collaboration of seismologists, computer scientists, and structural geologists who are developing computational platforms that can combine seismological and geological information into three dimensional (3D) representations of Earth structure. They derive the seismological information from earthquakes, controlled-source experiments, and observations of the ambient seismic field generated by ocean waves and other near-surface disturbances. They derive the geological information from an even wider variety of sources: field mapping, electromagnetic remote sensing, geotechnical measurements, drilling and well-logging, fault trenching, and laboratory measurements of material properties. The systematic integration of such diverse datasets into unified structural representations (USRs) is a key problem of geoinformatics. The goal of this project is to develop for community use the complex cyberinfrastructure needed to manage the ?USR lifecycle?, including the effective application of high performance computing (HPC) to invert joint datasets in the iterative improvement of USRs. The lifecycle is initiated by the integration of several components into a starting model; the starting model is refined by full-3D tomographic inversion of seismic waveform data; the refined model is validated for its proposed applications and then disseminated to user communities. This new model becomes the main component of the starting model for the next lifecycle.

该提案的主要研究人员是地震学家、计算机科学家和结构地质学家的合作，他们正在开发计算平台，可以将地震和地质信息结合成地球结构的三维 (3D) 表示。他们从地震、受控源实验以及对海浪和其他近地表扰动产生的周围地震场的观测中获取地震学信息。他们从更广泛的来源获取地质信息：现场测绘、电磁遥感、岩土测量、钻井和测井、断层挖沟以及材料特性的实验室测量。 将这些不同的数据集系统地集成到统一的结构表示（USR）中是地理信息学的一个关键问题。该项目的目标是为社区开发管理“USR生命周期”所需的复杂网络基础设施，包括有效应用高性能计算（HPC）来反转USR迭代改进中的联合数据集。 生命周期是通过将多个组件集成到起始模型中来启动的；通过地震波形数据的全三维层析反演对起始模型进行细化；改进后的模型针对其建议的应用程序进行了验证，然后分发给用户社区。这个新模型成为下一个生命周期起始模型的主要组成部分。