2010 Darfield, New Zealand, ROLC

Ground motion information:

NGA Record Sequence Number 6962

Magnitude = 7
Closest Distance = 1.5 km
Hypocentral Distance = 28.98 km
Vs30 = 275 m/s
Mechanism = Strike slip

T_p = 7.14 s
PGV = 85.7 cm/s

Orientation of strongest pulse, relative to north = 151 degrees
Orientation of strongest pulse, relative to fault parallel = 66 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 = 0.51
s = 26.85 km
θ = 0.1

Y = 0.45
d = 10.79 km
φ = 8.2

IDP = 3.04
Rowshandel parameter = 0.61