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Earth, Planets and Space
Fig. 20 | Earth, Planets and Space

Fig. 20

From: Unified approach for evaluation of horizontal site amplification factors with special reference to history of studies on the effects of surface geology on seismic motion

Fig. 20

Comparison of sHSAF and wHSAF for Fourier spectra derived by the GIT analysis (top three panels) and sHSAF and wHSAF for pseudo response spectra with 5% damping derived in the same way as Fourier spectra. We should note that the amplitudes of sHSAF for response spectra are close to that for Fourier spectra, with stronger smoothing effects, however, the amplitudes of wHSAF for response spectra are strongly underestimated, especially in the lower frequency range

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