2007 Chuetsu-oki, Iizuna Imokawa

Ground motion information:

NGA Record Sequence Number 4891

Magnitude = 6.8
Closest Distance = 66.4 km
Hypocentral Distance = 92.37 km
Vs30 = 425 m/s
Mechanism = Reverse-oblique

T_p = 0.92 s
PGV = 81.5 cm/s

Orientation of strongest pulse, relative to north = 23 degrees
Orientation of strongest pulse, relative to fault parallel = 11 degrees
Pulse in fault normal direction = 0
Pulse due to directivity = 0

Comments:

Huge distance and not a clear pulse

Directivity parameters:

X = 0.81
s = 26 km
θ = 13.4

Y = 0.5
d = 11.98 km
φ = 58.9

IDP = 0.8
Rowshandel parameter = 0.19