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Development of crust deformation monitor using GPS array data

Research Project

Project/Area Number 13308020
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Natural disaster science
Research InstitutionThe University of Tokyo

Principal Investigator

HORI Muneo  The University of Tokyo, Earthquake Research Institute, Professor, 地震研究所, 教授 (00219205)

Co-Investigator(Kenkyū-buntansha) OGUNI Kenji  The University of Tokyo, Earthquake Research Institute, Research Associate, 地震研究所, 助手 (20323652)
KATO Teruyuki  The University of Tokyo, Earthquake Research Institute, Professor, 地震研究所, 教授 (80134633)
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥31,460,000 (Direct Cost: ¥24,200,000、Indirect Cost: ¥7,260,000)
Fiscal Year 2003: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2002: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Fiscal Year 2001: ¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
KeywordsGPS / inverse analysis / regional stress / regional strain / regional elasticity / optimization of non-linear problem / monitoring / large-scale numerical computation / 解析解 / 数値シミュレーション / 地域ひずみ場 / 数値解析 / 応力関数 / バックスリップ / 特異摂動
Research Abstract

This research is aimed at developing a crust deformation monitor which continuously monitors the state of the Japanese Island by analyzing the nation-wide array of GPS. The key point of the monitor is the inverse analysis theory that predict a stress field by using data measured in a discrete and the equilibrium equation that stress satisfies. By comparing the measured strain and the predicted stress, the monitor is able to evaluate the mechanical state for instance, apparent mechanical properties are identified. The validity of the crust deformation monitor has been checked through a numerical experiment in which both stress and strain are known. It is shown that as the quality and quantity of the data increases, the monitor is able to find the stress and state of the target the uncertainty of the monitored variables is estimated. The monitor is applied to analyze actual data of the nation-wide GPS data during 1998-2002. In view of the quality of available data, the monitor seeks to identify the distribution of Poisson's ratio over the Japanese Islands, which is in harmony with the S-wave and P-wave structure which is identified through the artificial earthquake measurement. This shows the usefulness of the developed crust deformation monitor, although further modification and improvement is needed as the quantity of the measured data increase such modification can be more rationally made. In order to estimate the uncertainty of the monitored field variables, a new theory of stochastic modeling has been developed for continuum mechanics. The theory is being applied to the crust deformation monitor.

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (32 results)

All Other

All Publications (32 results)

  • [Publications] M.Hori, T.Ichimura, H.Nakagawa: "Analysis of stochastic model : application to strong motion and fault problems"Structural Eng./Earthquake Eng., JSCE. 20. 11-24 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Hori, K.Oguni: "Two analysis methods for the crustal deformation of Japanese Islands"Key Engineering/Materials Vols.. 243-244. 493-498 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Hori, H.Nakagawa: "Numerical simulation of surface earthquake fault using spectral stochastic finite element method"Prediction and Simulation Methods in Geomechanics. 137-140 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Hori: "Stress inversion method for predicting local stress distribution of body in two-dimensional state of plane stress or strain"Mechanics of Materials. 35. 395-406 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Hori: "Application of spectral decomposition of Green's function to linear inverse problem"Engineering Analysis with Boundary Elements. 28. 183-193 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 堀宗朗(編集委員): "構造工学ハンドブック"丸善. 2000 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Hori, T.Ichimura, H.Nakagawa: "Analysis of stochastic model : application to strong motion and fault problems"Structural Eng./Earthquake Eng., JSCE. 20. 11-24 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Hori, K.Oguni: "Two analysis methods for the crustal deformation of Japanese Islands"Key Engineering/Materials. 243-244. 493-498 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Hori, H.Nakagawa: "Numerical simulation of surface earthquake fault using spectral stochastic finite element method"Prediction and Simulation Methods in Geomechanics. 137-140 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Hori: "Stress inversion method for predicting local stress distribution of body in two-dimensional state of plane stress or strain"Mechanics of Materials. 35. 395-406 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Hori: "Application of spectral decomposition of Green's function to linear inverse problem"Engineering Analysis with Boundary Elements. 28. 183-193 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Hori (editors): "Handbook of Structure Engineering (in Japanese)"Maruzen. 2000 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Hori, T.Ichimura, H.Nakagawa: "Analysis of stochastic model : application to strong motion and fault problems"Structural Eng./Earthquake Eng., JSCE. 20. 11-24 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Hori, K.Oguni: "Two analysis methods for the crustal deformation of Japanese Islands"Key Engineering/Materials Vols.. 243-244. 493-498 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Hori, H.Nakagawa: "Numerical simulation of surface earthquake fault using spectral stochastic finite element method"Prediction and Simulation Methods in Geomechanics. 137-140 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Hori: "Stress inversion method for predicting local stress distribution of body in two-dimensional state of plane stress or strain"Mechanics of Materials. 35. 395-406 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Hori: "Application of spectral decomposition of Green's function to linear inverse problem"Engineering Analysis with Boundary Elements. (印刷中). (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 小国健二, 堀宗朗, 坂口秀: "破壊現象の解析に適した新しい数値解析手法について"土木学会論文集第1部門. (印刷中). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 堀宗朗(編集委員): "構造工学ハンドブック"丸善. 2000 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Hori: "Stress inversion method for predicting local stress distribution of body in two-dimensional state of plane stress or strain"Mechanics of Materials. 35. 395-406 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Hori: "Application of spectral decomposition of Green's function to linear inverse problem"Engineering Analysis with Boundary Elements. (印刷中). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 堀宗朗, 亀田敏弘, 小国健二: "GPS地殻変動計測への新しい解析理論の応用"地盤工学会誌. 51・2. 16-18 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Hori, T.Kameda: "Inversion of stress from strain without full knowledge of constitutive relations"J.Mech.Phys.Solids. 49. 449-478 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Hori: "Inverse analysis method using spectral decomposition of Green's function"International Journal of Geophysics. 147. 77-87 (2001)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Hori, T.Kameda, T.Kato: "Application of stress inversion method to predict stress distribution in Japanese Islands"International Journal of Geophysics. 144. 597-608 (2001)

    • Related Report
      2002 Annual Research Report
  • [Publications] 村上章, 登坂宣好, 堀宗朗, 鈴木誠: "有限要素法・境界要素法による逆問題解析-カルマンフィルタと等価介在物法の応用-"コロナ社. 187 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Hori, T.Kameda: "Inversion of stress from strain without full knowledge of constitutive relations"J. Mech. Phys. Solids. 49. 449-478 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Hori: "Inverse analysis method using spectral decomposition of Green's function"International Journal of Geophysics. 147. 77-87 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Hori, T.Kameda, T.Kato: "Application of stress inversion method to predict stress distribution in Japanese"International Journal of Geophysics. 144. 597-608 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 堀宗朗, 小国健二: "応力逆解析手法の構築と日本列島の応力増分分布推定への応用"応用力学論文集. 3. 195-201 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Hori, T.Kameda T.Kato: "Prediction of stress filed in Japan using GPS network data"Earth, Planets Space. 52. 1101-1105 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Hori, K.Oguni: "Bifurcating initiation and evolution of periodic micro-defects"Materials Science and Engineering. A285. 122-129 (2000)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2021-08-23  

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