1999 Chi-Chi, Taiwan-03, CHY024

Ground motion information:

NGA Record Sequence Number 2457

Magnitude = 6.2
Closest Distance = 19.7 km
Hypocentral Distance = 26.68 km
Vs30 = 428 m/s
Mechanism = Reverse-oblique

T_p = 3.19 s
PGV = 32.7 cm/s

Orientation of strongest pulse, relative to north = 274 degrees
Orientation of strongest pulse, relative to fault parallel = 86 degrees
Pulse in fault normal direction = 1
Pulse due to directivity = 0

Comments:

Borderline

Directivity parameters:

X = 0.55
s = 5.51 km
θ = 76.7

Y = 0.59
d = 6.46 km
φ = 7.4

IDP = 1.59
Rowshandel parameter = 0.51