1999 Chi-Chi, Taiwan, NST

Ground motion information:

NGA Record Sequence Number 1402

Magnitude = 7.6
Closest Distance = 38.4 km
Hypocentral Distance = 89.2 km
Vs30 = 405 m/s
Mechanism = Reverse-oblique

T_p = 7.88 s
PGV = 32.3 cm/s

Orientation of strongest pulse, relative to north = 48 degrees
Orientation of strongest pulse, relative to fault parallel = 11 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 = 27

Y = 0.36
d = 13.07 km
φ = 10.1

IDP = 2.65
Rowshandel parameter = 0.3