1999 Chi-Chi, Taiwan, TCU018

Ground motion information:

NGA Record Sequence Number 1473

Magnitude = 7.6
Closest Distance = 66.3 km
Hypocentral Distance = 117.31 km
Vs30 = 560 m/s
Mechanism = Reverse-oblique

T_p = 10.23 s
PGV = 42.7 cm/s

Orientation of strongest pulse, relative to north = 69 degrees
Orientation of strongest pulse, relative to fault parallel = 33 degrees
Pulse in fault normal direction = 0
Pulse due to directivity = 0

Comments:

A little distant, cycles after the pulse

Directivity parameters:

X = 0.62
s = 56.01 km
θ = 27.3

Y = 0.4
d = 14.71 km
φ = 0.3

IDP = 2.66
Rowshandel parameter = 0.3