Meyer-Yamadaのウェーブレットを利用した非定常地盤増幅特性の経験的評価

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タイトル別名
  • EMPIRICAL ESTIMATION OF NON-STATIONARY SITE EFFECTS USING THE MEYER-YAMADA WAVELET
  • Meyer Yamada ノ ウェーブレット オ リヨウシタ ヒテイジョウ ジバン ゾウフク トクセイ ノ ケイケンテキ ヒョウカ

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抄録

A technique for empirically estimating non-stationary site effects in time domain is proposed by ingeniously averaging out the wavelet coefficients to improve Birgoren and Irikura procedure (2005). They developed a method for estimating site effects in amplification and phase using the Meyer-Yamada wavelet. An advantage of the method is an equalization of the wavelet coefficients for multiple seismic records. However, it requires accurately synchronized records. In this study, an automated phase identification algorithm to synchronize the S-wave phases is proposed. The applicability of the proposed method is demonstrated for the observed seismic records.

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