1989 Loma Prieta, Saratoga - W Valley Coll.

Ground motion information:

NGA Record Sequence Number 803

Magnitude = 6.9
Closest Distance = 9.3 km
Hypocentral Distance = 32.2 km
Vs30 = 387 m/s
Mechanism = Reverse-oblique

T_p = 5.65 s
PGV = 62 cm/s

Orientation of strongest pulse, relative to north = 280 degrees
Orientation of strongest pulse, relative to fault parallel = 28 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 = 27.6

Y = 0.81
d = 14.53 km
φ = 15.7

IDP = 2.8
Rowshandel parameter = 0.15