Applicability of the Method Based on Wavelength-Thickness Ratio to Observed Micro-tremor for Surface Layer of Two-layered Subsurface Model

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  • 波長層厚比を用いた2層地盤モデル構成法の微動観測結果への適用性

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<p>Micro-tremor array data with limited wavelength range or inversion analysis without reference soil profile calls for a method to infer a simpler subsurface model. We have proposed the method to deduce surface layer thickness and shear wave velocity of a two-layered model by resorting to the quarter wavelength theory and the concept of wavelength-thickness ratio. The method was effective in numerical tests with PS logging data at K-NET and KiK-net observation stations with relevant wavelength-thickness ratio. The effectiveness of the method for observed dispersion curves is tested in this report.</p>

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