2004 Parkfield-02, CA, Parkfield - Stone Corral 4E

Ground motion information:

NGA Record Sequence Number 4116

Magnitude = 6
Closest Distance = 8.8 km
Hypocentral Distance = 11.87 km
Vs30 = 387 m/s
Mechanism = Strike slip

T_p = 0.6 s
PGV = 84.3 cm/s

Orientation of strongest pulse, relative to north = 64 degrees
Orientation of strongest pulse, relative to fault parallel = 77 degrees
Pulse in fault normal direction = 1
Pulse due to directivity = 0

Comments:

Not a directivity geometry, and the pulse isn't as clear here as in other Parkfield records.

Directivity parameters:

X = 0.04
s = 1.48 km
θ = 80.2

Y = 0.7
d = 5.6 km
φ = 45.6

IDP = 0.42
Rowshandel parameter = -0.61