2007 Chuetsu-oki, SERVICE HALL:50.8 M DEPTH

Ground motion information:

NGA Record Sequence Number 4897

Magnitude = 6.8
Closest Distance = 11 km
Hypocentral Distance = 16.31 km
Vs30 = 310 m/s
Mechanism = Reverse-oblique

T_p = 2.98 s
PGV = 85.3 cm/s

Orientation of strongest pulse, relative to north = 66 degrees
Orientation of strongest pulse, relative to fault parallel = 32 degrees
Pulse in fault normal direction = 0
Pulse due to directivity = 0

Comments:

The station title suggests that this is a downhole instrument. Exclude it on that basis.

Directivity parameters:

X = 0.38
s = 12.07 km
θ = 27.5

Y = 0.01
d = 0.21 km
φ = 88.9

IDP = 0.45
Rowshandel parameter = -0.14