1979 Imperial Valley-06, Agrarias



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 159

Magnitude = 6.5
Closest Distance = 0.7 km
Hypocentral Distance = 10.3 km
Vs30 = 275 m/s
Mechanism = Strike slip

Tp = 2.34 s
PGV = 53.5 cm/s

Orientation of strongest pulse, relative to north = 53 degrees
Orientation of strongest pulse, relative to fault parallel = 90 degrees
Pulse in fault normal direction = 1
Pulse due to directivity = 1


Comments:

Small s value but very clear pulse.

Directivity parameters:


X = 0.05
s = 2.38 km
θ = 24.6

Y = 0.77
d = 10 km
φ = 3.8

IDP = 0.55
Rowshandel parameter = -0.69


Notes:



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