Table E-1
Dispersion relationships for horizontal rock motion from the attenuation relationships of
Sadigh et al. (1993).
Ground Motion Parameter
Period
Sigma [ln(y)]
Peak Ground Acceleration
--
1.39 - 0.14*M; 0.38 for M > 7.21
Response Spectra Acceleration
0.05
1.39 - 0.14*M; 0.38 for M > 7.21
Response Spectra Acceleration
0.07
1.40 - 0.14*M; 0.39 for M > 7.21
Response Spectra Acceleration
0.09
1.40 - 0.14*M; 0.39 for M > 7.21
Response Spectra Acceleration
0.10
1.41 - 0.14*M; 0.40 for M > 7.21
Response Spectra Acceleration
0.12
1.41 - 0.14*M; 0.40 for M > 7.21
Response Spectra Acceleration
0.14
1.42 - 0.14*M; 0.41 for M > 7.21
Response Spectra Acceleration
0.15
1.42 - 0.14*M; 0.41 for M > 7.21
Response Spectra Acceleration
0.17
1.42 - 0.14*M; 0.41 for M > 7.21
Response Spectra Acceleration
0.20
1.43 - 0.14*M; 0.42 for M > 7.21
Response Spectra Acceleration
0.24
1.44 - 0.14*M; 0.43 for M > 7.21
Response Spectra Acceleration
0.30
1.45 - 0.14*M; 0.44 for M > 7.21
Response Spectra Acceleration
0.40
1.48 - 0.14*M; 0.47 for M > 7.21
Response Spectra Acceleration
0.50
1.50 - 0.14*M; 0.49 for M > 7.21
Response Spectra Acceleration
0.75
1.52 - 0.14*M; 0.51 for M > 7.21
Response Spectra Acceleration
1.00
1.53 - 0.14*M; 0.52 for M > 7.21
Response Spectra Acceleration
>1.00
1.53 - 0.14*M; 0.52 for M > 7.21
Note: Sigma [ln(y)] is the standard deviation of the natural logarithm of the respective ground motion
parameter, y. M is the earthquake moment magnitude.
E-22
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