Soft Schemes for Earthquake-Geotechnical Dilemmas

Table 3

Seismic events contained in the database.

Earthquake	Magnitude 𝑀𝑤	PGA* (g)	Epicentral distance (km)	Number of patterns
1906 San Francisco	7.9	0.28–0.26	13–27	4
1964 Alaska	9.2	0.21–0.39	35–100	7
1964 Niigata, Japan	7.5	0.19	21	299
1971 San Fernando	6.4	0.55	1	28
1979 Imperial Valley	6.5–6.6	0.21–0.51	2–6	32
1983 Nihonkai-Chubu, Japan	7.7	0.25	27	72
1987 Superstition Hills	6.6	0.21	23	6