Evaluation of thickness and surface layer S-wave velocity of the two layered subsurface model by dispersion curve and H/V spectrum

Moeko Koie, Toshiro Maeda

    Research output: Contribution to journalArticle

    Abstract

    Subsurface structure model is constructed by simulating dispersion curves usually by GA with reference data such as PS logging. When the reference data is not available or micro-tremor array radius is inadequate for the wavelength of interest, method to infer a simpler subsurface model such as a two-layered model is desirable. We propose the method to deduce surface layer thickness and shear wave velocity of the model by resorting to quarter wavelength theory and the concept of wavelength-thickness ratio. The method itself and the wavelength-thickness ratio is tested by PS logging data at K-NET and KiK-net observation sites.

    Original languageEnglish
    Pages (from-to)975-978
    Number of pages4
    JournalAIJ Journal of Technology and Design
    Volume24
    Issue number58
    DOIs
    Publication statusPublished - 2018 Oct 1

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    Wavelength
    Shear waves
    Model structures

    Keywords

    • Dispersion curve
    • H/V spectrum
    • Microtremor array observation
    • Sub-surface structure

    ASJC Scopus subject areas

    • Architecture
    • Building and Construction

    Cite this

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    abstract = "Subsurface structure model is constructed by simulating dispersion curves usually by GA with reference data such as PS logging. When the reference data is not available or micro-tremor array radius is inadequate for the wavelength of interest, method to infer a simpler subsurface model such as a two-layered model is desirable. We propose the method to deduce surface layer thickness and shear wave velocity of the model by resorting to quarter wavelength theory and the concept of wavelength-thickness ratio. The method itself and the wavelength-thickness ratio is tested by PS logging data at K-NET and KiK-net observation sites.",
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    AU - Maeda, Toshiro

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