1999 Chi-Chi, Taiwan, TCU017

Ground motion information:

NGA Record Sequence Number 1472

Magnitude = 7.6
Closest Distance = 54.3 km
Hypocentral Distance = 105.6 km
Vs30 = 559 m/s
Mechanism = Reverse-oblique

T_p = 8.67 s
PGV = 47.5 cm/s

Orientation of strongest pulse, relative to north = 59 degrees
Orientation of strongest pulse, relative to fault parallel = 23 degrees
Pulse in fault normal direction = 0
Pulse due to directivity = 0

Comments:

A little distant, lots more cycles after the pulse

Directivity parameters:

X = 0.62
s = 56.01 km
θ = 27.7

Y = 0.4
d = 14.68 km
φ = 1.1

IDP = 2.71
Rowshandel parameter = 0.31