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Seismic strong motion estimation with risk evaluation in Mexico City

Research Project

Project/Area Number 09041127
Research Category

Grant-in-Aid for international Scientific Research

Allocation TypeSingle-year Grants
SectionField Research
Research Field Natural disaster science
Research InstitutionTokyo Metropolitan University

Principal Investigator

MOCHIZUKI Toshio  東京都立大学, 都市研究所, 教授 (80087270)

Co-Investigator(Kenkyū-buntansha) ORDAZ Mario  メキシコ国立防災センター, 主任研究員
QUAAS Roberto  メキシコ国立防災センター, 主任研究員
IIDA Masahiro  東京大学, 地震研究所, 助手 (50159563)
TANIGUCHI Hitoshi  国際連合地域開発センター, 研究員 (20121361)
ORDAZ Morio  メキシコ国立防災センター, 主任研究員
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥9,000,000 (Direct Cost: ¥9,000,000)
Fiscal Year 1998: ¥4,600,000 (Direct Cost: ¥4,600,000)
Fiscal Year 1997: ¥4,400,000 (Direct Cost: ¥4,400,000)
KeywordsMexico City / Soft ground / Long-period strong motion / Wavefield / 3-D nonlinear building response / Soil-building interaction system / Seismic risk evaluation system
Research Abstract

We investigate large-amplitude long-period strong motions with long duration, which caused much building damage in the lakebed zone of Mexico City during the 1985 earthquake. We estimate strong motions reasonably, and perform a building response analysis in the lakebed zone. We evaluate seismic risk in Mexico City, and summarize countermeasures for earthquake disaster prevention. For these purposes, we performed the following 3 research themes.
1.Strong motions. (1) We analyzed strong motions recorded at a 3-dimensional, small array station in the lakebed zone of Mexico City. We estimated a theoreticalwavefield, using a shallow and deep structures. Also, we separated body andsurface waves theoretically. Furthermore, we performed a numerical simulation for body-wave propagation, considering nonlinearity and subsidence of soils. (2) We analyzed strong motions recorded at several borehole stations in Mexico City, and investigated wavefields in different geotechnical zones. We estimated some theoretical wavefields using deep structures, and indicated that surface waves were excited by the Mexican Volcanic Belt.
2.Buildings. (1) We developed a 3-dimensional nonlinear soil-building interaction analysis, which considered characteristics of strong motions. We performed the interaction analysis for low- to high-rise buildings in the lakebed zone of Mexico-City during the hypothetical Guerrero earthquake, which is similar to the 1985 earthquake. We interpreted much damage to mid-rise buildings during the 1985 earthquake. (2) We conducted the same analysis in different geotechnical zones of Mexico City, and interpreted local differences in damage level.
3.Urban disaster prevention. We started to improve an existing seismic risk evaluation system for Mexico City, by considering strong-motion characteristics and building responses. Also, we are estimating economical damage in Mexico City due to some earthquakes.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] 飯田昌弘・谷口仁士他: "Strong-motion observation demonstration of the long-path effects from the Bcific Ocean to Mexico City" Natural Disaster Science. 19・1. 47-66 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 飯田昌弘: "Three-dimensional non-linear soil-building interaction analysis in the lakebed zone of Mexico City during the hypothetical Guerrero earthquake" Earthquake Engineering Structural Dynamics. 27. 1483-1502 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 飯田昌弘: "3次元構造物-地盤系の非線形解析による仮想ゲレロ地震時のメキシコ市の建物の応答予測" 日本建築学会・構造物と地盤の動的相互作用シンポジウム. 5. 149-154 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 飯田昌弘・木下繁夫: "Systematic analysis of borehole recordings to estimate wavefield in the lakebed zone of Mexico City" Effects Surface Geology Seismic Motion. 2・2. 357-364 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 飯田昌弘: "Transfer-functions of S waves by considering subsidence and nonlinearity of shallow soft deposits" Effects Surface Geology Seismic Motion. 2・2. 743-748 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 飯田昌弘: "Excitation of high-frequency surface waves with long duration in the Valley of Mexico" J. Geophysical Research-Solid Earth. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M.Iida, H.Taniguchi et al.: "Strong-motion observation demonstration of long-path effects from the Pacific Ocean to Mexico City" Natural Disaster Science. 19-1. 47-66 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M.Iida: "Three-dimensional nonlinear soil-building interaction analysis in the lakebed zone of Mexico City during the hypothetical Guerrero earthquake" Earthquake Engineering Structural Dynamics. 27. 1483-1502 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M.Iida and S.Kinoshita: "Systematic analysis of borehole recordings to estimate wavefield in the lakebed zone of Mexico City" Effects Surface Geology Seismic Motion. 2-2. 357-364 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M.Iida: "Transfer functions of S waves by considering subsidence and nonlinearity of shallow soft deposits" Effects Surface Geology Seismic Motion. 2-2. 743-748 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M.Iida: "Excitation of high-frequency surface waves with long duration in the Valley of Mexico" J.Geophysical Research Solid Earth. (in print).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 飯田昌弘・谷口仁士他: "Strong-motion observation demonstration of the long-poth effects from the Pacific Ocean to Mexico City" Natural Disasfer Science. 19・1. 47-66 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] 飯田昌弘: "Three-dimensional non-linear soil-building interaction analysis in the lakebed zone of Mexico City during the hypothetical Guerrerc earthquake" Earthquake Engineering Structural Dynamics. 27. 1483-1502 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 飯田昌弘: "3次元構造物-地盤系の非線形解析による仮想ゲレロ地震時のメキシコ市の建物の応答予測" 日本建築学会・構造物と地盤の動的相互作用シンポジウム. 5. 149-154 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 飯田昌弘・木下繁夫: "Systematic analysis of borehole recordings to estimate wavefield in the lakebed zone of Mexico City" Effects Surface Geology Seismic Motion. 2・2. 357-364 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 飯田昌弘: "Transfer functions of S waves by considering subsidence and nonlinearity of shallow soft deposits" Effects Surface Geology Seismic Motion. 2・2. 743-748 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 飯田昌弘: "Excitation of high-frequency surface waves with long Suration in the Valley of Mexico" J.Geophysical Research-Solid Earth. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 飯田 昌弘・ORDAZ Mario・谷口 仁士 他: "Interpretation of wave field inside the Mexico Valley based upon the borehole data." 第11回世界地震工学会議. (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] 飯田 昌弘: "仮想ゲレロ地震による、メキシコ市の超軟弱地盤での3次元構造物-地盤系の非線形解析" 第24回土木学会地震工学研究発表会. 561-564 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 飯田 昌弘・谷口 仁士 他: "Strong-motion observation demonstration of the long-path effects from the Pacific Ocean to Mexico City" Natural Disaster Science.

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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