Chiou and Youngs PEER-NGA Empirical Ground Motion Model for ...

Chiou and Youngs PEER-NGA Empirical Ground Motion Model for ... Chiou and Youngs PEER-NGA Empirical Ground Motion Model for ...

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Comparison with Data at Distances > 70 km: Figure 45 shows intra-event residuals for the two large California earthquakes that are in both the PEER-NGA data set and the extended TriNet data set. The residuals were computed using the event terms determined fro the regression of the PEER-NGA data for RRUP ≤ 70 km. The model fit to the data for RRUP ≤ 70 km does a reasonable job of predicting the ground motions at larger distances when extrapolated using the model for γ given in Equation (19). Figure 45: Intra-event residuals for the Northridge and Hector Mines pga data from the PEER-NGA and extended data sets. The residuals were computed using the event term for each earthquake determined in the overall regression of the PEER-NGA data for RRUP ≤ 70 km. C&Y2006 Page 63

EXAMPLE CALCULATIONS FORTRAN routine CY2006.FOR and the accompanying coefficients table file CY2006.C are provided to implement the model developed in this study. Example input and output files are provided for four scenarios: M 5 and M 7 strike-slip earthquakes and M 5 and M 7 reverse faulting earthquakes. The required input variables are indicated by the header record in the example input files. Note the routine reads a value for the source-site angle θSITE, but it is not presently used in the model. The routine accepts its main input and writes the output to the console. After invoking at the command prompt, the routine asks for the coefficient file and then loops over prompts for the input and output files. Table 6 list the computed values of ground motion for the four example scenarios for spectral periods of 0.01, 0.2, 1.0, 3.0 seconds. Table 6: Example Calculations Period (sec) M RRUP VS30 RJB Width (km) FRV FNM ZTOR δ SA1130 (g) SA (g) M 5 Strike Slip 0.01 5 5 760 5 2.98 0 0 5 90 0.176143 0.209829 0.01 5 10 760 10 2.98 0 0 5 90 0.090143 0.108028 0.01 5 15 760 15 2.98 0 0 5 90 0.054094 0.065046 0.01 5 30 760 30 2.98 0 0 5 90 0.019356 0.023371 0.01 5 50 760 50 2.98 0 0 5 90 0.008551 0.010340 0.01 5 100 760 100 2.98 0 0 5 90 0.002559 0.003097 0.01 5 200 760 200 2.98 0 0 5 90 0.000469 0.000567 0.2 5 5 760 5 2.98 0 0 5 90 0.381812 0.461236 0.2 5 10 760 10 2.98 0 0 5 90 0.190465 0.232906 0.2 5 15 760 15 2.98 0 0 5 90 0.112706 0.138741 0.2 5 30 760 30 2.98 0 0 5 90 0.039643 0.049184 0.2 5 50 760 50 2.98 0 0 5 90 0.017440 0.021698 0.2 5 100 760 100 2.98 0 0 5 90 0.005271 0.006569 0.2 5 200 760 200 2.98 0 0 5 90 0.001001 0.001249 1 5 5 760 5 2.98 0 0 5 90 0.042062 0.057565 1 5 10 760 10 2.98 0 0 5 90 0.020717 0.028364 1 5 15 760 15 2.98 0 0 5 90 0.012403 0.016984 1 5 30 760 30 2.98 0 0 5 90 0.004750 0.006505 1 5 50 760 50 2.98 0 0 5 90 0.002427 0.003324 1 5 100 760 100 2.98 0 0 5 90 0.001108 0.001518 1 5 200 760 200 2.98 0 0 5 90 0.000495 0.000678 3 5 5 760 5 2.98 0 0 5 90 0.004184 0.006020 3 5 10 760 10 2.98 0 0 5 90 0.002059 0.002962 3 5 15 760 15 2.98 0 0 5 90 0.001238 0.001781 3 5 30 760 30 2.98 0 0 5 90 0.000485 0.000698 3 5 50 760 50 2.98 0 0 5 90 0.000257 0.000370 3 5 100 760 100 2.98 0 0 5 90 0.000130 0.000187 3 5 200 760 200 2.98 0 0 5 90 0.000072 0.000103 M 5 Reverse 0.01 5 5 760 0 2.98 1 0 5 45 0.206129 0.245144 0.01 5 10 760 7.03 2.98 1 0 5 45 0.101354 0.121352 0.01 5 15 760 13.21 2.98 1 0 5 45 0.060198 0.072341 0.01 5 30 760 29.15 2.98 1 0 5 45 0.021427 0.025864 0.01 5 50 760 49.49 2.98 1 0 5 45 0.009456 0.011433 0.01 5 100 760 99.75 2.98 1 0 5 45 0.002828 0.003423 0.01 5 200 760 199.87 2.98 1 0 5 45 0.000518 0.000627 0.2 5 5 760 0 2.98 1 0 5 45 0.448670 0.540181 0.2 5 10 760 7.03 2.98 1 0 5 45 0.214421 0.261728 C&Y2006 Page 64

EXAMPLE CALCULATIONS<br />

FORTRAN routine CY2006.FOR <strong>and</strong> the accompanying coefficients table file CY2006.C<br />

are provided to implement the model developed in this study. Example input <strong>and</strong> output files<br />

are provided <strong>for</strong> four scenarios: M 5 <strong>and</strong> M 7 strike-slip earthquakes <strong>and</strong> M 5 <strong>and</strong> M 7<br />

reverse faulting earthquakes. The required input variables are indicated by the header record<br />

in the example input files. Note the routine reads a value <strong>for</strong> the source-site angle θSITE, but it<br />

is not presently used in the model. The routine accepts its main input <strong>and</strong> writes the output to<br />

the console. After invoking at the comm<strong>and</strong> prompt, the routine asks <strong>for</strong> the coefficient file<br />

<strong>and</strong> then loops over prompts <strong>for</strong> the input <strong>and</strong> output files.<br />

Table 6 list the computed values of ground motion <strong>for</strong> the four example scenarios <strong>for</strong> spectral<br />

periods of 0.01, 0.2, 1.0, 3.0 seconds.<br />

Table 6: Example Calculations<br />

Period<br />

(sec)<br />

M RRUP VS30 RJB Width<br />

(km)<br />

FRV FNM ZTOR δ<br />

SA1130<br />

(g)<br />

SA<br />

(g)<br />

M 5 Strike Slip<br />

0.01 5 5 760 5 2.98 0 0 5 90 0.176143 0.209829<br />

0.01 5 10 760 10 2.98 0 0 5 90 0.090143 0.108028<br />

0.01 5 15 760 15 2.98 0 0 5 90 0.054094 0.065046<br />

0.01 5 30 760 30 2.98 0 0 5 90 0.019356 0.023371<br />

0.01 5 50 760 50 2.98 0 0 5 90 0.008551 0.010340<br />

0.01 5 100 760 100 2.98 0 0 5 90 0.002559 0.003097<br />

0.01 5 200 760 200 2.98 0 0 5 90 0.000469 0.000567<br />

0.2 5 5 760 5 2.98 0 0 5 90 0.381812 0.461236<br />

0.2 5 10 760 10 2.98 0 0 5 90 0.190465 0.232906<br />

0.2 5 15 760 15 2.98 0 0 5 90 0.112706 0.138741<br />

0.2 5 30 760 30 2.98 0 0 5 90 0.039643 0.049184<br />

0.2 5 50 760 50 2.98 0 0 5 90 0.017440 0.021698<br />

0.2 5 100 760 100 2.98 0 0 5 90 0.005271 0.006569<br />

0.2 5 200 760 200 2.98 0 0 5 90 0.001001 0.001249<br />

1 5 5 760 5 2.98 0 0 5 90 0.042062 0.057565<br />

1 5 10 760 10 2.98 0 0 5 90 0.020717 0.028364<br />

1 5 15 760 15 2.98 0 0 5 90 0.012403 0.016984<br />

1 5 30 760 30 2.98 0 0 5 90 0.004750 0.006505<br />

1 5 50 760 50 2.98 0 0 5 90 0.002427 0.003324<br />

1 5 100 760 100 2.98 0 0 5 90 0.001108 0.001518<br />

1 5 200 760 200 2.98 0 0 5 90 0.000495 0.000678<br />

3 5 5 760 5 2.98 0 0 5 90 0.004184 0.006020<br />

3 5 10 760 10 2.98 0 0 5 90 0.002059 0.002962<br />

3 5 15 760 15 2.98 0 0 5 90 0.001238 0.001781<br />

3 5 30 760 30 2.98 0 0 5 90 0.000485 0.000698<br />

3 5 50 760 50 2.98 0 0 5 90 0.000257 0.000370<br />

3 5 100 760 100 2.98 0 0 5 90 0.000130 0.000187<br />

3 5 200 760 200 2.98 0 0 5 90 0.000072 0.000103<br />

M 5 Reverse<br />

0.01 5 5 760 0 2.98 1 0 5 45 0.206129 0.245144<br />

0.01 5 10 760 7.03 2.98 1 0 5 45 0.101354 0.121352<br />

0.01 5 15 760 13.21 2.98 1 0 5 45 0.060198 0.072341<br />

0.01 5 30 760 29.15 2.98 1 0 5 45 0.021427 0.025864<br />

0.01 5 50 760 49.49 2.98 1 0 5 45 0.009456 0.011433<br />

0.01 5 100 760 99.75 2.98 1 0 5 45 0.002828 0.003423<br />

0.01 5 200 760 199.87 2.98 1 0 5 45 0.000518 0.000627<br />

0.2 5 5 760 0 2.98 1 0 5 45 0.448670 0.540181<br />

0.2 5 10 760 7.03 2.98 1 0 5 45 0.214421 0.261728<br />

C&Y2006 Page 64

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