1979 Imperial Valley-06, Holtville Post Office

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 185

Magnitude = 6.5
Closest Distance = 7.5 km
Hypocentral Distance = 22.16 km
Vs30 = 203 m/s
Mechanism = Strike slip

T_p = 4.82 s
PGV = 73.4 cm/s

Orientation of strongest pulse, relative to north = 263 degrees
Orientation of strongest pulse, relative to fault parallel = 60 degrees
Pulse in fault normal direction = 1
Pulse due to directivity = 1

Comments:

no comment

Directivity parameters:

X = 0.38
s = 18.91 km
θ = 17.2

Y = 0.68
d = 8.79 km
φ = 40.5

IDP = 1.31
Rowshandel parameter = -0.21

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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