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Table 3 Variation reduction in the variance (R σ ) in % for the 12 ANN models for PGA, PGV and at T = [0.2, 0.5, 1.0, 2.0] s

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

Ground-motion parameters (log10)

One SCP (log10)

Two SCPs (log10)

Three SCPs (log10)

Four SCPs (log10)

V S30

f 0

H 800

Slope

(V S30, f 0)

(V S30, H 800)

(f 0, slope)

(H 800, slope)

(f 0, H 800)

(V S30, slope)

(V S30, f 0, H 800)

(V S30, f 0, H 800, slope)

PGA

1.46

0.00

0.28

0.33

1.50

4.88

0.97

1.94

1.88

1.89

5.73

6.23

PGV

13.44

8.26

5.08

4.00

13.97

13.83

10.07

7.37

9.09

14.27

16.03

16.70

0.2 s

10.78

4.04

1.88

2.09

10.35

12.02

5.72

3.53

5.17

11.18

13.41

13.87

0.5 s

22.81

19.31

14.69

2.58

26.49

23.12

18.86

14.79

21.32

21.85

27.21

26.32

1 s

17.72

24.27

18.72

7.35

25.96

19.87

25.34

21.55

26.36

19.37

26.13

26.72

2 s

16.60

20.33

18.28

7.82

23.26

19.61

21.85

22.20

23.66

18.72

24.12

25.13