1994 Northridge-01, Sylmar

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 1084

Magnitude = 6.7
Closest Distance = 5.4 km
Hypocentral Distance = 21.87 km
Vs30 = 251 m/s
Mechanism = Reverse-oblique

T_p = 2.98 s
PGV = 106.3 cm/s

Orientation of strongest pulse, relative to north = 63 degrees
Orientation of strongest pulse, relative to fault parallel = 59 degrees
Pulse in fault normal direction = 0
Pulse due to directivity = 1

Comments:

no comment

Directivity parameters:

X = 0.07
s = 1.23 km
θ = 84.6

Y = 0.81
d = 19.5 km
φ = 13.3

IDP = 2.62
Rowshandel parameter = 0.43

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