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Portugal database. Alexandra Carvalho LNEC, Lisboa, Portugal. Alexandra Carvalho. Stochastic methodology applied to the definition of MCE. Upper crustal attenuation. Geometric attenuation. R. Inelastic attenuation. r. O. Boore , 1983 (w 2 model )
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Portugal database Alexandra Carvalho LNEC, Lisboa, Portugal Alexandra Carvalho
Stochastic methodology applied to the definition of MCE Upper crustal attenuation Geometric attenuation R Inelastic attenuation r O Boore, 1983 (w2model) Beresnev & Atkinson, 1998 (Finsin) Motazedian & Atkinson,, 2005 (Exsim) Geometric attenuation
Stochastic methodology applied to the definition of MCE Upper crustal attenuation Geometric attenuation R Inelastic attenuation r O Boore, 1983 (w2model) Beresnev & Atkinson, 1998 (Finsin) Motazedian & Atkinson,, 2005 (Exsim) Geometric attenuation
Stochastic methodology applied to the definition of MCE Upper crustal attenuation Geometric attenuation R Inelastic attenuation r O Boore, 1983 (w2model) Beresnev & Atkinson, 1998 (Finsin) Motazedian & Atkinson,, 2005 (Exsim) Geometric attenuation
Portugal: Azores: Other studies Our goal: Other studies Our goal: k Q(f) M0 fc Δσ β ρ D Q(f) k M0 fc Δσ β ρ D
Methodology 1.E-01 1.E-01 1.E-02 1.E-02 AF [cm/s] AF [cm/s] 1.E-03 1.E-03 1.E-04 1.E-04 0 10 20 0 10 20 Frequência [Hz] Frequência [Hz] 1.E+16 3.23 Momento [Nm] 1.E+14 source 1.E-02 1.E-01 1.E+12 0.1 1 10 100 1.E-04 Frequência [Hz] 1.E-02 AF [m.s] 1.E-06 AF [m.s] 1.E-03 1.E-08 0.1 1 10 100 1.E-04 Frequência [Hz] 0.1 1 10 100 Frequência [Hz] Perfil 1D, Carrilho [2004] 1.E-01 1.E-02 Q(f) Q(f) AF [m.s] 1.E-03 1.E-04 0.1 1 10 100 Frequência [Hz] k Fourier Spectrum Acceleration Graphic Correction Fourier Spectrum displacemnet Theory Fit
PAD 1.0.Portuguese Accelerometer Database 1969-2006 [Vilanova et al., 2009] stations implemented in stiff soil and on ground level 58 records
Methodology 1.E-01 1.E-01 1.E-02 1.E-02 AF [cm/s] AF [cm/s] 1.E-03 1.E-03 1.E-04 1.E-04 0 10 20 0 10 20 Frequência [Hz] Frequência [Hz] 1.E+16 3.23 Momento [Nm] 1.E+14 source 1.E-02 1.E-01 1.E+12 0.1 1 10 100 1.E-04 Frequência [Hz] 1.E-02 AF [m.s] 1.E-06 AF [m.s] 1.E-03 1.E-08 0.1 1 10 100 1.E-04 Frequência [Hz] 0.1 1 10 100 Frequência [Hz] Perfil 1D, Carrilho [2004] 1.E-01 1.E-02 Q(f) Q(f) AF [m.s] 1.E-03 1.E-04 0.1 1 10 100 Frequência [Hz] k Fourier Spectrum Acceleration Graphic Correction Fourier Spectrum displacemnet Theory Fit
Stochastic methodology applied to the definition of MCE Upper crustal attenuation Geometric attenuation Inelastic attenuation O data: 21 distances x 8 azimuths x 18 magnitudes x 15 x 15 simulations= 45360 spectra
Finite-fault simulations Alexandra Carvalho LNEC, Lisboa, Portugal Alexandra Carvalho