ESTIMATION OF STRONG MOTION GENERATION AREAS AND STRONG MOTIONS DURING THE 1923 KANTO EARTHQUAKE USING REVISED STOCHASTIC GREEN'S FUNCTION METHOD

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  • SATOH Toshimi
    Institute of Technology, Shimizu Corporation, Chief Researcher, Dr.Eng.

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  • 改良統計的グリーン関数法に基づく1923年関東地震の強震動生成域と強震動の推定
  • カイリョウ トウケイテキ グリーン カンスウホウ ニ モトズク 1923ネン カントウ ジシン ノ キョウシンドウ セイセイイキ ト キョウシンドウ ノ スイテイ

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Abstract

 We estimate strong motion generation areas and strong motions during the 1923 Kanto earthquake by the forward modeling of the seismic intensity scale using the revised stochastic Green's function method. The nonlinear site effects on the seismic intensity scale are considered. The strong motion generation areas are located at almost the same position as large slip areas. Site amplification factors of spectral model and site coefficients of envelope model are interpolated by applying the Kriging method. Strong motions are spatially estimated using this method. The strong motion estimated at Hongo is consistent with the restored Imamura-type seismogram.

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