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Earth, Planets and Space
Fig. 10 | Earth, Planets and Space

Fig. 10

From: V S30, slope, H 800 and f 0: performance of various site-condition proxies in reducing ground-motion aleatory variability and predicting nonlinear site response

Fig. 10

Comparison of the NL components of site amplification for different descriptions of the loading level, for the one-SCP ANN model using V S30. Each panel represents the (soft/stiff) site amplification at a given oscillator period as a function of a loading parameter. The three columns correspond to three different oscillator periods (0, 0.2 and 1.0 s). The three rows correspond to different choices for the loading level: strain proxy PGVsoft/V S30 on top, spectral ordinates at the stiff-site PSAstiff (T) in the middle and PSAstiff at the 0.0 s (bottom). As shown in Fig. 9, the site amplification factors (SR: Eq. 3) are calculated for three distances: 30 km, 50 km and 75 km, for which the variation of loading level corresponds to magnitude variations between 5 and 7 (for a fixed focal depth equal to 10 km)

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