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' CALCULATION OF WEIGHTED AVERAGE 2008 NGA MODELS: by Linda At Atfk,PEER-Sep,2009-I-atik@berkeley.edu Fault Name: Hayward Fault Zone This Excel file calculates the weighted average of the natural logarithm of the spectral values from the NGA models NGA Modd: AS08 BA08 CBO8 CY08 108 Weigbt: ASOB:Abrahamson d Silva 2008 NGA Model BA08:Boore d Atkinson 2008 NGA Model N C808:Campbell d Bozorgnia 2008 NGA Model CY08:Chiou d Youngs 2008 NGA Model ' 108:Idriss 2008 NGA Model Explanatory Variables Geometric Mean Horizontal Component M GMP T(s) SA Median SA Median+No SA Median-Na SD Median 5%-Damped Pseudo-Absolute Acceleration Response Spectrum 7.30 PSA(g) 0.010 7.801E-02 1.317E-01 4.619E-02 1.937E-04 10 SD(cm) 0.020 7.920E-02 1.340E-01 4.681E-02 7.864E-04 ' Rip(km) 0.030 8.372E-02 1.436E-01 4.879E-02 1.870E-03 45.00 0.050 9.883E-02 1.741E-01 5.611E-02 6.133E-03 0.075 1.232E-01 2.222E-01 6.827E-02 1.720E-02 1 Ria(km) 0.10 1.440E-01 2.618E-01 7.926E-02 3.576E-02 45.00 0.15 1.703E-01 3.098E-01 9.363E-02 9.512E-02 020 1.794E-01 3233E-01 9.951E-02 1.781E-01 a Rx(km) 025 1.660E-01 2.981E-01 9.243E-02 2.575E-01 9 0.00 0.30 1.551E-01 2.783E-01 8.639E-02 3.464E-01 m 0.1 0.40 1.338E-01 2.397E-01 7.471E-02 5.315E-01 Q U 0.50 1.190E-01 2.148E-01 6.598E-02 7.388E-01 0 0.75 8.495E-02 1.566E-01 4.608E-02 1.186E+00 m y 0.01 1.06.492E-02 1.210E-01 3.483E-02 1.612E+00 Fey 1.5 4.172E-02 7.887E-02 2.206E-02 2.330E+00 0 2.0 3.052E-02 5.806E-02 1.604E-02 3.030E+00 3.0 1.938E-02 3.698E-02 1.015E-02 4.329E+00 F 4.0 1.436E-02 2.745E-02 7.511E-03 5.704E+00 0.001 NM o.ot 0.1 t 10 06.0 1.173E-02 2.363E-02 5.826E-03 7.282E+00 Period(s) 7.5 6.723E-03 1.437E-02 3.144E-03 9.387E+00 FMw 10.0 4.530E-03 1.033E-02 1.986E-03 1.124E+01 0 roM(km) PGA(g) 0 0.078 1.317E-01 4.619E-02 ' 2.40 PGV(ds) .1 8.034E+00 1.358E+01 4.753E+00 d 90 Vsaa(Msec) 760 F- 0 Zr.o(m) DEFA DEFINITION OF PARAMETERS: Zis(km N =Number of standartl deviations to be considered in the calculations 7.,(ko NDEFAULT PSA =Pseudo-absolute acceleration response spectrum(g;5%damping) PGA Peak ground acceleration(g) ' W(km) PGV =Peak ground velocity(cads) 1 SD Relative displacement response spectrum(cm;5%damping) E-Moment magnitude Fps =Closest distance to coseismic rupture(km),used in ASOB,CBOS and CY08.See Figures a,b and c for illustation 0 =Closest distance to surface projection of coseismic rupture(km).See Figures a,b and c for illustation ' Rx =Horizontal distance from top of rupture measured perpendicular to fault strike(km),used in AS08 and CY08.See Figures a,b and c for illustation W Taper U =Unspecified-mechanism factor:1 for unspecified;0 otherwise,used in BA08 =Reverse-faulfing factor:0 for strike slip,normal,normal-oblique;1 for reverse,reverse-oblique and thrust =Normal-faulting factor.0 for strike stip,reverse,reverse-oblique,thrust and normal-oblique;1 for normal =Hanging-wall factor:1 for site on down-dip side of top of rupture;0 otherwise,used in AS08 and CY08 ioa =Depth to top of coseismic rupture(km),used in ASO$,CB08 and CY08 ' =Average dip of rupture plane(degrees),used in ASO8,CBOB and CY08 =Average shear-wave velocity in top 30m of site profile Fn,,,,,,a -Vs30 Factor.1 if VS30 is measured,0 if Vs30 is inferred,used in AS08 and CYOS Z1_a =Depth to 1.0 km/sec velocity horizon(m),used in AS08 and CY08.Enter"DEFAULT"in order to use the default values or enter your site specific number --Depth of 2.5 kmis shear-wave velocity horizon(km),used in CBOB.Enter"DEFAULT"in order to use the default value or enter your site specific number IV =Fault rupture width(km),used in ASOB FAS -Aftershock factor:0 for mainshock;1 for aftershock,used in AS08 and CY08 RW Taper-To choose the hanging wall taper to be used in ASO&Enter 0 to use the hanging wall taper as published in Abrahamson and Silva(2008), or enter 1 to use the revised hanging well taper suggested by Norm Abrahamson 1