2007 Chuetsu-oki, Kariwa



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 4875

Magnitude = 6.8
Closest Distance = 12 km
Hypocentral Distance = 16.06 km
Vs30 = 210 m/s
Mechanism = Reverse-oblique

Tp = 3.08 s
PGV = 154.5 cm/s

Orientation of strongest pulse, relative to north = 319 degrees
Orientation of strongest pulse, relative to fault parallel = 75 degrees
Pulse in fault normal direction = 1
Pulse due to directivity = 0


Comments:

Similar to 4856. The ringing from 40s to 60s at the pulse period shows site resonance.

Directivity parameters:


X = 0.33
s = 10.59 km
θ = 37.2

Y = 0.05
d = 1.21 km
φ = 84.2

IDP = 0.37
Rowshandel parameter = -0.19


Notes:



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