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Study on practical application of the CCA method, a new analysis method for array observations of microtremors

Research Project

Project/Area Number 24560688
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Building structures/materials
Research InstitutionKyushu University

Principal Investigator

KANNO Tatsuo  九州大学, 人間・環境学研究科(研究院), 教授 (80363026)

Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords微動アレー観測 / 地下構造 / CCA法 / SPAC法
Outline of Final Research Achievements

Analysis results for observed microtremors by the CCA method were compared with those by the SPAC method, and the following knowledge was provided.
1. When the array of the small radius is used, the CCA method shows superior estimation ability of the phase velocity, but with the array of radius of more than 100m, ability of both methods does not have the difference. 2. When the same array radius is used, the frequency band of the Rayleigh wave where the CCA method can estimate phase velocity shifts to the low frequency side, and, the SPAC method have higher ability of analysis in the high frequency range. 3. The combination of both methods widens a frequency range of the estimated phase velocity. 4. If the SN ratios of the observed microtremors are managed appropriately, the CCA method can reduce the array radius of approximately 100m to 20-40m.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (4 results)

All 2015 2014

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (3 results)

  • [Journal Article] 微動アレー観測におけるCCA法とSPAC法によるRayleigh波の位相速度の比較2014

    • Author(s)
      田川佳典、神野達夫
    • Journal Title

      都市・建築学研究 : 九州大学大学院人間環境学研究院紀要

      Volume: 26 Pages: 41-47

    • NAID

      120005623153

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 微動アレー観測におけるCCA法が推定される地下構造に与える影響2015

    • Author(s)
      田川佳典、神野達夫
    • Organizer
      日本建築学会研究報告. 九州支部研究発表会
    • Place of Presentation
      熊本県立大学(熊本県熊本市)
    • Year and Date
      2015-03-01
    • Related Report
      2014 Annual Research Report
  • [Presentation] 微動アレー観測におけるCCA法とSAPC法によるRayleigh波位相速度の比較2014

    • Author(s)
      田川佳典、神野達夫
    • Organizer
      日本建築学会大会(近畿)学術講演会
    • Place of Presentation
      神戸大学(兵庫県神戸市)
    • Year and Date
      2014-09-12 – 2014-09-14
    • Related Report
      2014 Annual Research Report
  • [Presentation] 微動アレー観測におけるCCA 法とSAPC 法によるRayleigh 波位相速度の比較2014

    • Author(s)
      田川佳典、 神野達夫
    • Organizer
      日本建築学会九州支部研究発表会
    • Place of Presentation
      佐賀大学
    • Related Report
      2013 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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