1999 Chi-Chi, Taiwan, TCU047

Ground motion information:

NGA Record Sequence Number 1487

Magnitude = 7.6
Closest Distance = 35 km
Hypocentral Distance = 86.76 km
Vs30 = 520 m/s
Mechanism = Reverse-oblique

T_p = 12.31 s
PGV = 44.4 cm/s

Orientation of strongest pulse, relative to north = 55 degrees
Orientation of strongest pulse, relative to fault parallel = 19 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 = 29.1

Y = 0.39
d = 14.48 km
φ = 1.9

IDP = 2.8
Rowshandel parameter = 0.31