ITR: Development of an Integrated Tool for Modeling Quasi-static Deformation in the Solid Earth

ITR：开发模拟固体地球准静态变形的集成工具

• 批准号: 0313238
• 负责人: Charles Williams
• 金额: $ 30万
• 依托单位: Rensselaer Polytechnic Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-10-01 至 2007-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0313238&HistoricalAwards=false
• 关键词: ITR; Development; Integrated; Tool; Modeling

This project is providing a complete modeling environment for solving quasi-static problems in geophysics. The goal is to provide a tool that is easy to use, open-source, and able to solve problems of all scales, including large-scale problems that are not presently solvable. With this tool, users are able to address problems on time scales ranging from days (e.g., postseismic relaxation following a large earthquake, magma chamber expansion/contraction beneath an active volcano), to years (e.g., models of interseismic stress/strain accumulation to evaluate seismic hazard), to hundreds or thousands of years (e.g., multi-earthquake simulations of an active seismic zone), to millions of years (e.g., evolution of tectonic features). Ease of use is aided by incorporating the code into the Pyre framework being developed at Caltech. By using this framework, users automatically gain access to other tools already included in Pyre, including the ability to couple different codes. Use of the Pyre framework also greatly reduces the complexity of creating a model, exploring parameter space, and visualizing the results. Comprehensive documentation and a suite of test problems are also being provided as a starting point for new users, allowing them to rapidly develop their own models. The core of this project is a version of the finite element code TECTON, which has been specifically designed to solve tectonic problems. In addition to incorporating the code into the Pyre framework, the code is also being parallelized using the PETSc parallel libraries. The parallel implementation will allow the code to be used on a wide range of computer architectures, including serial (single processor) machines, shared memory (multiprocessor) machines, networks of PC's or workstations, or specially-designed workstation clusters. Thus, users will be able to solve problems of all scales, depending on the available computational resources

该项目为解决地球物理中的准静态问题提供了一个完整的建模环境。 目的是提供一种易于使用，开源的工具，并能够解决所有尺度的问题，包括目前无法解决的大规模问题。 With this tool, users are able to address problems on time scales ranging from days (e.g., postseismic relaxation following a large earthquake, magma chamber expansion/contraction beneath an active volcano), to years (e.g., models of interseismic stress/strain accumulation to evaluate seismic hazard), to hundreds or thousands of years (e.g., multi-earthquake simulations of an active seismic zone), to millions of years （例如，构造特征的演变）。 通过将代码纳入加州理工学院开发的PYRE框架中，可以帮助使用易用性。 通过使用此框架，用户可以自动访问PYRE中已包含的其他工具，包括策划不同代码的能力。 使用Pyre框架的使用还大大降低了创建模型，探索参数空间和可视化结果的复杂性。还提供了全面的文档和一套测试问题，作为新用户的起点，使他们能够快速开发自己的模型。 该项目的核心是有限元代码Tecton的版本，该版本专门设计用于解决构造问题。 除了将代码合并到PYRE框架中，该代码还使用PETSC并行库并行化。并行实现将允许代码在广泛的计算机架构上使用，包括串行（单处理器）机器，共享内存（多处理器）机器，PC或工作站网络或专门设计的工作站群集。 因此，用户将能够根据可用的计算资源解决所有量表的问题