2007 Chuetsu-oki, Yan Sakuramachi City watershed

Ground motion information:

NGA Record Sequence Number 4879

Magnitude = 6.8
Closest Distance = 19 km
Hypocentral Distance = 23.79 km
Vs30 = 210 m/s
Mechanism = Reverse-oblique

T_p = 1.41 s
PGV = 39.4 cm/s

Orientation of strongest pulse, relative to north = 304 degrees
Orientation of strongest pulse, relative to fault parallel = 90 degrees
Pulse in fault normal direction = 1
Pulse due to directivity = 0

Comments:

Soft site. The ringing is evidence of a site effect

Directivity parameters:

X = 0.19
s = 6 km
θ = 30.5

Y = 0.16
d = 3.74 km
φ = 74.9

IDP = 0.77
Rowshandel parameter = -0.35