1987 Superstition Hills-02, Parachute Test Site

Plots of original ground motion, extracted pulse, and residual ground motion:

Map of epicenter, rupture extent and station location:

Ground motion information:

NGA Record Sequence Number 723

Magnitude = 6.5
Closest Distance = 1 km
Hypocentral Distance = 18.35 km
Vs30 = 349 m/s
Mechanism = Strike slip

T_p = 2.39 s
PGV = 143.9 cm/s

Orientation of strongest pulse, relative to north = 242 degrees
Orientation of strongest pulse, relative to fault parallel = 65 degrees
Pulse in fault normal direction = 1
Pulse due to directivity = 1

Comments:

no comment

Directivity parameters:

X = 0.8
s = 15.96 km
θ = 3.4

Y = 0.75
d = 9 km
φ = 6

IDP = 2.4
Rowshandel parameter = 0.45

Notes:

These results were computed November 1st, 2012
These results are based on the June 2012 version of the NGA West 2 database
If you have any observations, comments or requests regarding this data, please e-mail Jack Baker and Shrey Shahi

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