1999 Chi-Chi, Taiwan, CHY024

Plots of original ground motion, extracted pulse, and residual ground motion:

Map of epicenter, rupture extent and station location:

Ground motion information:

NGA Record Sequence Number 1193

Magnitude = 7.6
Closest Distance = 9.6 km
Hypocentral Distance = 25.39 km
Vs30 = 428 m/s
Mechanism = Reverse-oblique

T_p = 6.65 s
PGV = 61.6 cm/s

Orientation of strongest pulse, relative to north = 144 degrees
Orientation of strongest pulse, relative to fault parallel = 33 degrees
Pulse in fault normal direction = 0
Pulse due to directivity = 1

Comments:

no comment

Directivity parameters:

X = 0.14
s = 12.55 km
θ = 67.4

Y = 0.3
d = 10.83 km
φ = 2

IDP = 1.21
Rowshandel parameter = -0.26

Notes:

These results were computed November 1st, 2012
These results are based on the June 2012 version of the NGA West 2 database
If you have any observations, comments or requests regarding this data, please e-mail Jack Baker and Shrey Shahi

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