Three-Dimensional Seismic Response Analysis of Zhubi Reef in the South China Sea

Table 2

Average amplification ratios of peak acceleration on the reef flat calculated by the 2D and 3D models and their relative deviations.

		Pulse wave	Wave A	Wave B	Wave C	Average value
Slice 1		2.09	2.40	2.32	2.38	2.30
		1.69	2.22	2.20	2.10	2.05
	δ (%)	23.67	8.11	5.45	13.33	12.20
Slice 2		1.85	2.52	2.55	2.48	2.35
		1.91	2.36	2.26	2.20	2.18
	δ (%)	−3.14	6.78	12.83	12.72	7.80
Slice 3		1.89	2.34	2.25	2.21	2.17
		1.77	2.33	2.21	2.19	2.13
	δ (%)	6.78	0.43	1.81	0.91	0.48
Slice 4		1.91	2.52	2.41	2.41	2.31
		1.78	2.33	2.28	2.21	2.15
	δ (%)	7.30	8.15	5.70	9.05	7.44
Slice 5		1.96	2.43	2.31	2.39	2.27
		1.94	2.75	2.64	2.54	2.47
	δ (%)	1.03	−11.63	−12.5	−5.91	−8.10
Slice 6		1.84	2.40	2.32	2.24	2.20
		1.95	2.41	2.41	2.35	2.28
	δ (%)	−5.64	−0.41	−3.73	−4.68	−3.51