2004 Niigata, Japan, NIG021

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 4211

Magnitude = 6.6
Closest Distance = 11.3 km
Hypocentral Distance = 23.99 km
Vs30 = 418 m/s
Mechanism = Reverse-oblique

T_p = 0.32 s
PGV = 66.9 cm/s

Orientation of strongest pulse, relative to north = 40 degrees
Orientation of strongest pulse, relative to fault parallel = 8 degrees
Pulse in fault normal direction = 0
Pulse due to directivity = 1

Comments:

no comment

Directivity parameters:

X = 0.46
s = 11 km
θ = 9.7

Y = 0.64
d = 9 km
φ = 24.2

IDP = 0.96
Rowshandel parameter = 0.11

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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