Bozorgnia et al. (2000)

Ground-motion model is:
$ln Y = c1 + c2Mw + c3(8.5- Mw )2 + c4ln({R2 + [(c5SHS + c6{SP S + SSR} + c7SHR ) s 2 2 1∕2 exp(c8Mw + c9{8.5- Mw } )] } ) + c10FSS + c11FRV + c12FT H + c13SHS + c14SPS + c15SSR + c16SHR$
Use four site categories:
HS
Holocene soil: recent alluvium ⇒ S_HS = 1,S_PS = 0,S_SR = 0,S_HR = 0.
PS
Pleistocene soil: older alluvium ⇒ S_PS = 1,S_HS = 0,S_SR = 0,S_HR = 0.
SR
Soft rock ⇒ S_SR = 1,S_HS = 0,S_PS = 0,S_HR = 0.
HR
Hard rock ⇒ S_HR = 1,S_HS = 0,S_PS = 0,S_SR = 0.
Consider all records to be free-field.
All earthquakes occurred in shallow crustal tectonic environment.
Consider three source mechanisms: strike-slip (F_SS = 1,F_RV = 0,F_TH = 0) 20+ earthquakes (including 1+ normal faulting shock), reverse (F_RV = 1,F_SS = 0,F_TH = 0) 7+ earthquakes and thrust (F_TH = 1,F_SS = 0,F_RV = 0) 6+ earthquakes.
Coefficients not given, only predictions.