1999 Chi-Chi, Taiwan, TCU026

Ground motion information:

NGA Record Sequence Number 1475

Magnitude = 7.6
Closest Distance = 56.1 km
Hypocentral Distance = 106.51 km
Vs30 = 570 m/s
Mechanism = Reverse-oblique

T_p = 8.37 s
PGV = 45.7 cm/s

Orientation of strongest pulse, relative to north = 57 degrees
Orientation of strongest pulse, relative to fault parallel = 21 degrees
Pulse in fault normal direction = 0
Pulse due to directivity = 1

Comments:

A little distant, but it has a large s

Directivity parameters:

X = 0.62
s = 56.01 km
θ = 26.5

Y = 0.35
d = 12.7 km
φ = 15.8

IDP = 2.56
Rowshandel parameter = 0.29