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Improvement of precision of waveform of the coherent seismic wave tomography method

Research Project

Project/Area Number 11450172
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section一般
Research Field 構造工学・地震工学
Research InstitutionUniversity of Tokyo

Principal Investigator

HIGASHIHARA Hiromichi  EARTHQUAKE RESEARCH INSTITUTE, University of Tokyo, professor, 地震研究所, 教授 (10125891)

Co-Investigator(Kenkyū-buntansha) ARAYA Akito  EARTHQUAKE RESEARCH INSTITUTE, University of Tokyo, research associate, 地震研究所, 助手 (30272503)
TOUHEI Terumi  SCIENCE UNIVERSITY OF TOKYO, associate professor, 理工学部, 助教授 (50246691)
HORI Muneo  EARTHQUAKE RESEARCH INSTITUTE, University of Tokyo, associate professor, 地震研究所, 助教授 (00219205)
OHTAKE Yuji  EARTHQUAKE RESEARCH INSTITUTE, University of Tokyo, research associate, 地震研究所, 助手 (60282729)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥13,400,000 (Direct Cost: ¥13,400,000)
Fiscal Year 2000: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 1999: ¥10,600,000 (Direct Cost: ¥10,600,000)
Keywordsphysical prospecting / controlled sources / earthquake prediction / elastic wave tomography / seismic motion
Research Abstract

We have developed an active seismic underground tomography system based on a new-brand idea. In 1999 fiscal year, we designed and manufactured an advanced model of rotary seismic source that has much more capability than the old one. We had planed to deploy the new source in a test field in 2000 fiscal year ; it appeared soon that this deployment needs a lot of budget fund, though, because the experience of another trial of a rotary seismic source done by Nagoya University revealed that the continuity between the source and the supporting ground required a careful introduction of the anchorage devices. Fortunately, another research plan that aimed the deployment was accepted elsewhere and we could submit the present fund to the original target, improvement of the ability of the system.
(1) Phased array of sources that realizes the coherent wave field requires not only the control of its velocity but also the control of its position. We realized this position control through a combination of an optical sensor and the encoder of the motor.
(2) We carried out a laboratory experiment of scattering of elastic wave in rock specimens. The objective of this experiment was to provide materials to construction of models of scattering of elastic wave through stress concentration in the ground ; good scattering models are supposed to support inversion calculations.
(3) We also analyzed mathematically the elastic wave in layered ground and established a formula that described the transformation to the emitted elastic wave energy from the electromagnetic energy submitted into the motor.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (27 results)

All Other

All Publications (27 results)

  • [Publications] M.Saeki.and H.Higashihara: "Analysis of harmonic seismic wave field as a basis of new tomography method"Proc.International Workship WAVE2000. 399-408 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Higashihara et al.: "Development of a new coherent seismic wave tomography method"Proc.Fourteenth Engineering Mechanics Conference, ASCE. 1-6 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Hori et al.: "Prediction of stress field in Japan using GPS network data"Earth Planets Space. 52. 1101-1105 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Hori and S.Munasighe: "Generalized Hashin-Shtrikman variational principle for boundary-value problem of linear and non-linear heterogeneous body"Mechanics of Materials. 31. 471-486 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Touhei: "A scattering problem by means of the spectral representation of Green's function for a layered acoustic half-space"Computational Mechanics. 25. 477-488 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Otake: "Development of a horizontal component seismometer using a magnetic spring"Review of Scientific Instruments. Vol.71,No.12. 4576-4581 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Higashihara, H.and Shiogama Y.: "Development of a new, high precision harmonic seismic wave tomography method"Proc.fourth European Conf.Structural Dynamics. Vol.1. 593-598 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Saeki, and H.Higashihara: "Analysis of harmonic seismic wave field as a basis of new tomography method"Proc.International Workshop WAVE2000. 399-408 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Higashihara et al.: "Development of a new coherent seismic wave tomography method"Proc. Fourteenth Engineering Mechanics Conference, ASCE. 1-6 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Hori and S.Munasighe: "Generalized Hashin-Shtrikman variational principle for boundary-value problem of linear and non-linear heterogeneous body"Mechanics of Materials. 37. 471-486 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Hori and T.Koyama: "Proposal of two grout analysis methods"J.Geotech.Eng., JSCE. No.624, /III-47. 31-38 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Hori, T.Kameda, and N.Hosokawa: "Formulation of identifying material property distribution based on equivalent inclusion method"Structural Eng./Earthquake Eng., JSCE.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Hori et al.: "Prediction of stress field in Japan using GPS network data"Earth Planets Space. 52. 1101-1105 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Touhei: "A scattering problem by means of the spectral representation of Green's function for a layered acoustic half-space"Computational Mechanics. 25. 477-488 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Otake: "Development of a horizontal component seismometer using a magnetic spring"Review of Scientific Instruments. Vol.71, No.12. 4576-4581 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Saeki,and H.Higashihara: "Analysis of harmonic seismic wave field as a basis of new tomography method"Proc.International Workshop WAVE2000. 399-408 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] H.Higashihara et al.: "Development of a new coherent seismic wave tomography method"Proc.Fourteenth Engineering Mechanics Conference, ASCE. 1-6 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] M.Hori et al.: "Prediction of stress field in Japan using GPS network data"Earth Planets Space. 52. 1101-1105 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] M.Hori and S.Munasighe: "Generalized Hashin-Shtrikman variational principle for boundary-value problem of linear and non-linear heterogeneous body"Mechanics of Materials. 31. 471-486 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Touhei: "A scattering problem by means of the spectral representation of Green's function for a layered acoustic half-space"Computational Mechanics. 25. 477-488 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Otake: "Development of a horizontal component seismometer using a magnetic spring"Review of Scientific Instruments. Vol.71,No.12. 4576-4581 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 吉見雅行,東原紘道: "兵庫県南部地震の3次元差分シミュレーション-西宮市域および明石海峡周辺の強震動"応用力学論文集. Vol.2. 477-484 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Higashihara.H. and Shiogama Y.: "Development of a new,high precision harmonic seismic wave tomography method"Proc.fourth European Conf.Structural Dynamics. Vol.1. 593-598 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M,Hori and T.Koyama: "Proposal of two grout analysis methods"J.Geotech.Eng.,JSCE. No.624/III-47. 31-38 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Hori,T.Kameda, and N.Hosokawa: "Formulation of identifying material property distribution based on equivalent inclusion method"Structural Eng./Earthquake Eng.,JSCE. Vol.16,No.1. 21-30 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Hori and S.Munashinge: "Generalized Hashin-Shtrikman variational principle for boundary-value problem of linear and non-linear heterogeneous body"Mechanics of Materials. Vol.31.. 471-486 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 東平光生: "Hyperfunctionの概念を用いたスカラー成層波動場のGreen関数のスペクトル表現の誘導"応用力学論文集. Vol.2. 485-493 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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