2010 Darfield, New Zealand, HORC

Ground motion information:

NGA Record Sequence Number 6911

Magnitude = 7
Closest Distance = 7.3 km
Hypocentral Distance = 15.42 km
Vs30 = 275 m/s
Mechanism = Strike slip

T_p = 9.92 s
PGV = 106.1 cm/s

Orientation of strongest pulse, relative to north = 16 degrees
Orientation of strongest pulse, relative to fault parallel = 69 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 = 0.12
s = 6.47 km
θ = 53.6

Y = 0.46
d = 11 km
φ = 31.1

IDP = 0.59
Rowshandel parameter = 0.61