1989 Loma Prieta, Emeryville - 6363 Christie

Ground motion information:

NGA Record Sequence Number 758

Magnitude = 6.9
Closest Distance = 77 km
Hypocentral Distance = 98.09 km
Vs30 = 199 m/s
Mechanism = Reverse-oblique

T_p = 1.67 s
PGV = 44 cm/s

Orientation of strongest pulse, relative to north = 264 degrees
Orientation of strongest pulse, relative to fault parallel = 44 degrees
Pulse in fault normal direction = 0
Pulse due to directivity = 0

Comments:

Soft soil site. Too far away to be directivity

Directivity parameters:

X = 0.5
s = 20.02 km
θ = 30

Y = 0.81
d = 14.53 km
φ = 50.1

IDP = 1.97
Rowshandel parameter = 0.12