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Site-specific Ground Motion

  • What is the Site-specific Ground Motion Project?
  • Project Image
  • Value-Added-Information Generation
  • Role of NAMR
  • Role of 4DVE

What is the Site-specific Ground Motion Project?

The Site-specific Ground Motions Project aims to evaluate Site-specific Ground Motions of large earthquakes using sophisticated seismic wave propagation simulations. Data from this project is used for improving design and establishing implementation policies of important constructions.
In this web page, the databases of crustal structure models of oceanic and terrestrial areas are available. These databases can be used for large-scale parallel finite element method code E-wave FEM to simulate the seismic wave propagations.

・Database of oceanic and terrestrial crustal structure models

Project Image

  • ES4 ES4ES4The Earth SimulatorThe Earth Simulator (ES4) is a multi-architecture supercomputer based on AMD EPYC CPUs, combined with accelerators (NEC SX-Aurora TSUBASA and NVIDIA GPU A100).
  • DA DADASuper Computer System DA (Data Analyzer system) is a supercomputer system equipped with Intel processors with high performance and high reliability.
  • DIAS DIASDIASData Integration
    and Analysis System    The data obtained from observations in each region is collected, analyzed, and converted into useful information for crisis management against threats such as global environmental problems and large-scale natural disasters.
  • NAMR Numerical Analysis Method Repository NAMR is Numerical Analysis Method Repository. (Numerical analysis methods: artificial intelligence, sparse modeling, finite element method, particle method, verification method) Role of NAMR
  • 4DVE 4DVE develops and maintains a system that allows users to map variety of analysis data including time fluctuations, and seamlessly combine and extract information. It is called the 4th Dimensional Virtual Earth. Role of 4DVE
  • VAi VAi（Value-Added-Information Generation）VAi aims to contribute to the resolution of policy issues and the development of a sustainable socio-economic system by creating and disseminating information that meets various needs. VAi Details

VAi（Value-Added-Information Generation）

VAi aims to contribute to the resolution of policy issues and the development of a sustainable socio-economic system by creating and disseminating information that meets various needs.

  • Evaluation of Site-specific Ground Motions of large earthquakes:
    E-wave FEM (NAMR) simulation outputs the expected ground motion at the specific location of the important structure based on the predicted scenario of earthquake. The simulation uses the secondary data (4DVE) processed from the primary database of crustal observations. This service is provided to infrastructure companies as an advanced technology for evaluating the seismic resistance of important structures, and to public organizations (e.g., Cabinet Office Disaster Management) as an advanced technology for evaluating wide-area seismic motions.

Role of NAMR

NAMR is Numerical Analysis Method Repository. (Numerical analysis methods: artificial intelligence, sparse modeling, finite element method, particle method, verification method)

  • E-waveFEM
    A large-scale parallel finite element method code for high-resolution analysis of seismic wave propagation processes.
    Example of calculation with E-wave FEM

Role of 4DVE

4DVE develops and maintains a system that allows users to map variety of analysis data including time fluctuations, and seamlessly combine and extract information. It is called the 4th Dimensional Virtual Earth.

  • Generation of primary crustal structure database Database of oceanic and terrestrial crustal structure models based on observations

    ・Database of oceanic and terrestrial crustal structure models