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' CALCULATION OF WEIGHTED AVERAGE 2008 NGA MODELS: by Linda At Atik,PEER-Sep,2009-Latik@berkeley.edu Fault Name: San Andreas This Excel file calculates the weighted average of the natural logarithm of the spectral values from the NGA models ' NGA Model: ASOS BA08 CB08 CY08 108 Weight: AS08:Abrahamson d Silva 2008 NGA Model BA08:Boone 6 Atkinson 2008 NGA Model N CBOS:Campbell&Bozorgnia 2008 NGA Model CY08:Chiou b Youngs 2008 NGA Model L 108:Idriss 2008 NGA Model Explanatory Variables Geometric Mean Horizontal Component M GMP T(s) SA Median SA Median+No SA Median-No SO Median 5%-Damped Pseudo-Absolute Acceleration Response Spectrum ,8.10 PSA(g) 0.010 7.136E-02 1.205E-01 4.225E-02 1.771E-04 10 SO(cm) 0.020 7.226E-02 1.223E-01 4.270E-02 7.175E-04 ' puP(km) 0.030 7.556E-02 1.297E-01 4.403E-02 1.688E-03 75.00 0.060 8.655E-02 1.525E-01 4.912E-02 5.371E-03 0.075 1.012E-01 1.826E-01 5.605E-02 1.413E-02 (km) 0.10 1.142E-01 2.075E-01 6.278E-02 2.834E-02 1 +75.00 0.15 1.341E-01 2.440E-01 7.371E-02 7.491E-02 0.20 1.500E-01 2.704E-01 8.323E-02 1.490E-01 ' x(km) 0.25 1.466E-01 2.632E-01 8.161E-02 2.274E-01 u 0.1 0.00 0.30 1.420E-01 2.549E-01 7.913E-02 3.173E-01 0.40 1.270E-01 2.274E-01 7.088E-02 5.042E-01 U 0.50 1.232E-01 2.223E-01 6.829E-02 7.646E-01 0 0.75 1.029E-01 1.898E-01 5.583E-02 1.437E+00 0. y 0.01 1.0 8.673E-02 1.616E-01 4.653E-02 2.153E.00 Fav 1.5 6.395E-02 1.209E-0t 3.382E-02 3.572E+00 0 2.0 5.084E-02 9.671E-02 2.672E-02 5.048E+00 3.0 3.455E-02 6.594E-02 1.810E-02 7.719E+00 Fara 4.0 2.650E-02 5.067E-02 1.386E-02 1.053E+01 0.001 0.01 0.1 1 10 0 5.0 2.218E-02 4.467E-02 1.101E-02 1.377E+01 Period(s) 7.5 1.655E-02 3.538E-02 7.739E-03 2.311E+01 F_ 10.0 1.345E-02 3.067E-02 5.894E-03 3.338E+01 0 ioa(km) PGA(g) 0 0.071 1.205E-01 4.225E-02 0.20 PGV(Gs) -1 1.309E+01 2.212E+01 7.742E+00 5 90 (Wsec) 760 - M0 0 zi.o(m) DEF DEFAU DEFINITION OF PARAMETERS: Z21( N =Number of standard deviations to be considered in the calculations DEFA PSA =Pseudo-absolute acceleration response spectrum(g;5%damping) PGA =Peak ground acceleration(g) ' W( PGV =Peak ground velocity(cm/s) 1 SD =Relative displacement response spectrum(cm;5%damping) Moment magnitude Fxs E=Closest distance to coseismic rupture(km),used in ASO8,CB08 and CYO8.See Figures a,b and c for illustation 0 =Gosest 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 ASO8 and CY08.See Figures a,b and c for illustation HINT- U =Unspecified-mechanism factor:1 for unspecified;0 otherwise,used in BA08 =Reverse-faulting factor:0 for strike slip,normal,normal-oblique;1 for reverse,reverse-oblique and thrust =Normal-faulting factor:0 for strike slip,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 =Depth to top of coselsmic rupture(km),used in AS08.CB08 and CY08 ' =Average dip of rupture plane(degrees),used in ASO8,CB08 and CYOS =Average shear-wave velocity in top 30m of site profile Fa,,,,,.,a=Vs30 Factor:1 if VS30 Is measured,0 if Vs30 is inferred,used in AS08 and CY08 Z1a =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 CB08.Enter"DEFAULT"in order to use the default value or enter your site specific number W =Fault rupture width(km),used in AS08 FAS =Aftershock factor:0 for mainshock;1 for aftershock,used in ASO8 and CY08 HWTaper=To choose the hanging wall taper to be used in ASOB.Enter 0 to use the hanging wall taper as published in Abrahamson and Silva(2008), or enter 1 to use the revised hanging wall taper suggested by Norm Abrahamson