Electronic Supplement to
Nonlinear Site Models Derived from 1D Analyses for Ground-Motion Prediction Equations Using Site Class as the Site Parameter

by J. X. Zhao, Junsheng Hu, Fei Jiang, Jun Zhou, Yingbin Zhang, Xiaowen An, Ming Lu, and David A. Rhoades

Table S1. Model Parameters for SC IV1 Sites

Period Number	Spectral Period T (s)	CB(T)	CA(T)	SReffC	Amax
1	PGA	0.235	−0.699	0.895	1.808
2	0.05	0.220	−0.583	0.926	1.678
3	0.10	0.433	−0.467	1.389	1.958
4	0.15	0.494	−0.408	1.661	2.019
5	0.20	0.521	−0.376	1.843	2.041
6	0.25	0.542	−0.360	1.978	2.067
7	0.30	0.525	−0.353	1.956	2.025
8	0.35	0.483	−0.353	1.825	1.941
9	0.40	0.461	−0.327	1.871	1.874
10	0.45	0.455	−0.366	1.693	1.901
11	0.50	0.460	−0.441	1.496	1.984
12	0.60	0.462	−0.597	1.253	2.153
13	0.70	0.451	−0.660	1.175	2.200
14	0.80	0.441	−0.632	1.187	2.146
15	0.90	0.422	−0.550	1.248	2.020
16	1.00	0.403	−0.457	1.346	1.889
17	1.25	0.415	−0.158	3.643	1.641

C_B(T) and C_A(T) are coefficients; S_ReffC is the crossover effective rock spectrum at which the amplification ratio is 1.0; and A_max is the maximum amplification ratio when the rock site spectrum approaches zero.

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