Journal of the Japan Society of Engineering Geology
Online ISSN : 1884-0973
Print ISSN : 0286-7737
ISSN-L : 0286-7737
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Volume 55, Issue 3
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Original Article
  • Deep S-wave Velocity Structure in Osaka Plains Urban Area Estimated by Microtremor Survey Method
    Yuichiro MINAMI, Yukihiro MIZUOCHI, Tatsurou MATSUOKA, Tsuyoshi HARAGU ...
    Article type: Original Article
    2014 Volume 55 Issue 3 Pages 110-117
    Published: August 10, 2014
    Released on J-STAGE: November 26, 2014
    DOIhttps://doi.org/10.5110/jjseg.55.110
    JOURNAL FREE ACCESS
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     By using the new analysis method which focuses on stationarity of microtremor (ρ curve split calculating method), The S-wave velocity structures were obtained from the phase velocity dispersion curve with a smaller array size. In this way, we carried out microtremor array observations at 30 sites which cover all of Osaka City area. Consequently, 4 cross sections of east-west direction were obtained in the area spreading about 10km from south to north and 15km from east-west. From the east-west transects 4 cross sections, we could indicate that the S-wave velocity structures provide the obvious difference of the upper level of the basement rock between the west-and the east-side along the Uemachi fault．
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