Electronic Supplement to
The SDSU Broadband Ground-Motion Generation Module BBtoolbox Version 1.5

by Kim Olsen and Rumi Takedatsu

Table S4. Region-Dependent Parameters for BBtoolbox V1.5

Parameter	Explanation	Western Scenarios	Tottori	Niigata	Eastern United States/Canada
afac	Qk=afac+Vs×bfac	41	41	30	228
bfac	Qk=afac+Vs×bfac	34	34	20	136
Q0	Q(f)=Q0ffdec	150	150	95	500
fdec	Q(f)=Q0ffdec	0.8	1.14	1.14	0.6
κ	Kappa value	0.04 s−1	0.02 s−1	0.035 s−1	0.02 s−1
strfac	Brune stress parameter	50 bars	50 bars	50 bars	350 bars or Mw dependent
c0	Subfault corner frequency scale parameter	2.1	2.1	2.1	1.1

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