2002 Denali, Alaska, TAPS Pump Station #10

Ground motion information:

NGA Record Sequence Number 2114

Magnitude = 7.9
Closest Distance = 2.7 km
Hypocentral Distance = 84.89 km
Vs30 = 329 m/s
Mechanism = Strike slip

T_p = 3.16 s
PGV = 121.4 cm/s

Orientation of strongest pulse, relative to north = 56 degrees
Orientation of strongest pulse, relative to fault parallel = 13 degrees
Pulse in fault normal direction = 0
Pulse due to directivity = 1

Comments:

Clear pulse (this is also a good case of s being better than X as s directivity parameter)

Directivity parameters:

X = 0.22
s = 60.91 km
θ = 3.8

Y = 0.64
d = 9.64 km
φ = 35.9

IDP = 0.82
Rowshandel parameter = -0.37