1989 Loma Prieta, Saratoga - Aloha Ave



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 802

Magnitude = 6.9
Closest Distance = 8.5 km
Hypocentral Distance = 32.35 km
Vs30 = 387 m/s
Mechanism = Reverse-oblique

Tp = 4.57 s
PGV = 53.5 cm/s

Orientation of strongest pulse, relative to north = 70 degrees
Orientation of strongest pulse, relative to fault parallel = 58 degrees
Pulse in fault normal direction = 0
Pulse due to directivity = 1


Comments:

no comment

Directivity parameters:


X = 0.5
s = 20.02 km
θ = 23.2

Y = 0.81
d = 14.53 km
φ = 11.5

IDP = 2.9
Rowshandel parameter = 0.16


Notes:



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