常時微動計測に基づく名古屋市域の地盤震動特性と基盤深さの推定に関する研究

概要

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In order to estimate characteristics of ground motion and subsurface structure in Nagoya City, spectral ratios between horizontal and vertical components (H/V spectra) based on the microtremor records measured at 341 sites are used. Before using H/V spectra, interpretations of H/V spectrum for microtremors and strong ground motion are examined at the site where the subsurface structure had been clarified. As a result, it is confirmed that H/V spectrum for microtremors is the amplitude ratio between horizontal and vertical motion of Rayleigh wave including higher modes. Based on it, we investigate relationship between the shape of H/V spectrum for microtremors and subsurface structure in Nagoya City. The depth of seismological bedrock and engineering-basis bedrocks are also estimated from predominant periods of H/V spectrum for microtremors.
一般社団法人日本建築学会の論文
2000-03-20