2008 Iwate, Machimukai Town

Ground motion information:

NGA Record Sequence Number 5810

Magnitude = 6.9
Closest Distance = 24.1 km
Hypocentral Distance = 43.64 km
Vs30 = 425 m/s
Mechanism = Reverse-oblique

T_p = 4.16 s
PGV = 40 cm/s

Orientation of strongest pulse, relative to north = 276 degrees
Orientation of strongest pulse, relative to fault parallel = 67 degrees
Pulse in fault normal direction = 1
Pulse due to directivity = 0

Comments:

Not sure

Directivity parameters:

X = 0.53
s = 21 km
θ = 16.6

Y = 0.29
d = 5.26 km
φ = 67.8

IDP = 1.24
Rowshandel parameter = -0.08