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The Chi-Chi Earthquake occurred on the Chelungpu fault on September 21, 1999; the moment magnitude of the main shock was 7.6. The ground motions generated by the earthquake were recorded by 387 strong motion stations in Taiwan. Details about the recordings of the main shock can be found in Lee et al. (1999). Digital data about all the station records can be found through this link: http://www-scf.usc.edu/~asghari/ChiChi.htm. Ten strong motion stations that might be considered for liquefaction analysis in the study areas, are shown in Figure 11. The basic data of the ten stations are listed in Table 1.

Station	Coordinates		Epicenter distance (km)	Peak Ground Acceleration PGA (gal)
Station	Longitude (N)	Latitude (E)	Epicenter distance (km)	Vertical	N-S	E-W
TCU065	120^o41.46'	24^o03.54'	25.57	257.80	563.22	774.42
TCU076	120^o40.54'	23^o54.47'	15.25	275.38	420.02	340.10
TCU110	120^o34.19'	23^o57.70'	27.50	116.28	187.52	178.24
TCU112	120^o25.41'	24^o03.36'	45.50	65.26	68.00	78.30
TCU117	120^o27.62'	24^o07.98'	47.22	89.96	113.46	121.30
TCU120	120^o36.78'	23^o58.80'	24.62	166.52	193.50	222.98
TCU123	120^o32.56'	24^o01.06'	32.89	85.54	131.96	149.00
TCU129	120^o41.06	23^o52.70'	13.54	334.96	610.76	983.00
TCU138	120^o35.07'	23^o55.34'	55.34	110.36	207.40	202.24
CHY104	120^o27.94'	23^o40.19'	41.33	129.68	177.12	142.90

Table 1. Peak Ground Accelerations recorded by the ten stations related to this study

Ground Motion Records