1999 Chi-Chi, Taiwan-03, CHY080

Ground motion information:

NGA Record Sequence Number 2495

Magnitude = 6.2
Closest Distance = 22.4 km
Hypocentral Distance = 30.49 km
Vs30 = 496 m/s
Mechanism = Reverse-oblique

T_p = 1.38 s
PGV = 69.8 cm/s

Orientation of strongest pulse, relative to north = 272 degrees
Orientation of strongest pulse, relative to fault parallel = 88 degrees
Pulse in fault normal direction = 1
Pulse due to directivity = 0

Comments:

Borderline

Directivity parameters:

X = 0.55
s = 5.51 km
θ = 36.6

Y = 0.59
d = 6.46 km
φ = 13.9

IDP = 0.88
Rowshandel parameter = 0.35