2004 Niigata, Japan, NIGH11

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 4228

Magnitude = 6.6
Closest Distance = 8.9 km
Hypocentral Distance = 20.3 km
Vs30 = 375 m/s
Mechanism = Reverse-oblique

T_p = 1.8 s
PGV = 65.6 cm/s

Orientation of strongest pulse, relative to north = 43 degrees
Orientation of strongest pulse, relative to fault parallel = 11 degrees
Pulse in fault normal direction = 0
Pulse due to directivity = 1

Comments:

no comment

Directivity parameters:

X = 0.46
s = 11 km
θ = 3.9

Y = 0.61
d = 8.56 km
φ = 36.6

IDP = 0.94
Rowshandel parameter = 0.08

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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