2010 Darfield, New Zealand, SHLC

Ground motion information:

NGA Record Sequence Number 6966

Magnitude = 7
Closest Distance = 22.3 km
Hypocentral Distance = 52.18 km
Vs30 = 210 m/s
Mechanism = Strike slip

T_p = 8.76 s
PGV = 65.7 cm/s

Orientation of strongest pulse, relative to north = 157 degrees
Orientation of strongest pulse, relative to fault parallel = 72 degrees
Pulse in fault normal direction = 1
Pulse due to directivity = 1

Comments:

See Bradley (2012) for more details about this earthquake.

Directivity parameters:

X = 0.55
s = 29 km
θ = 8.7

Y = 0.46
d = 11 km
φ = 27.6

IDP = 3.19
Rowshandel parameter = 0.61