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Development of crust deformation analysis method for enhancing earthquake fault scenario

Research Project

Project/Area Number 25630192
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Structural engineering/Earthquake engineering/Maintenance management engineering
Research InstitutionThe University of Tokyo

Principal Investigator

Ichimura Tsuyoshi  東京大学, 地震研究所, 准教授 (20333833)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2013: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords震源断層シナリオ / 地殻変動 / 有限要素法
Outline of Final Research Achievements

Although analysis of crustal deformation has been intensively performed, most studies use analytical solutions with the assumption that the crustal structure is a half-space or a layered half-space, but some recent studies have used the 3D finite element method. This is because the heterogeneity of the crustal structure and ground-surface/layer-boundary geometry have a significant impact on simulation results. Crustal deformation analyses using high-fidelity crustal structure can be expected to consider such effects more realistically. The combination of computation results and crustal deformation observation data is expected to elucidate the earthquake mechanisms, which leads the reduction of earthquake disasters. With the accumulation of high-resolution observation data and the advancement of computer environment, the crustal deformation analysis method with such high-fidelity crustal structure data have been developed in this research project.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (5 results)

All 2015 2014 2013

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Numerical Verification Criteria for Coseismic and Postseismic Crustal Deformation Analysis with Large-scale High-fidelity Model2015

    • Author(s)
      R. Agata, T. Ichimura, K. Hirahara, M. Hyodo, T. Hori, C. Hashimoto, M. Hori
    • Journal Title

      Procedia Computer Science

      Volume: 51 Pages: 1534-1544

    • NAID

      120006323771

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Several Hundred Finite Element Analyses of an Inversion of Earthquake Fault Slip Distribution using a High-fidelity Model of the Crustal Structure2014

    • Author(s)
      R. Agata, T. Ichimura, K. Hirahara, M. Hyodo, T. Hori, M. Hori
    • Journal Title

      Procedia Computer Science

      Volume: 29 Pages: 877-887

    • DOI

      10.1016/j.procs.2014.05.079

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fast Numerical Simulation of Crustal Deformation using a Three-Dimensional High-fidelity Model2013

    • Author(s)
      Tsuyoshi Ichimura, Ryoichiro Agata, Takane Hori, Kazuro Hirahara, Muneo Hori
    • Journal Title

      Geophysical Journal International

      Volume: 195 Issue: 3 Pages: 1730-1744

    • DOI

      10.1093/gji/ggt320

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] 震源断層の想定高度化に関する基礎研究--高詳細な三次元地殻構造モデルを用いた地殻変形解析手法の開発--2013

    • Author(s)
      縣亮一郎,市村強,兵藤守,堀高峰,平原和朗,堀宗朗
    • Journal Title

      土木学会論文集A1(構造・地震工学)

      Volume: 69

    • NAID

      130004556987

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] Simultaneous Inverse Analysis Method of Fault Slip and Asthenosphere Viscosity Using Large Scale Finite Element Simulation of Postseismic Deformation2015

    • Author(s)
      R. Agata, T. Ichimura, T. Hori, K. Hirahara, C. Hashimoto, M. Hori
    • Organizer
      AGU Fall Meeting
    • Place of Presentation
      San Francisco, the U.S.
    • Year and Date
      2015-12-14
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research

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Published: 2014-07-25   Modified: 2019-07-29  

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