4.100 Shabestari and Yamazaki (2000)

• Ground-motion model is:

  where c_i(T) is the station coefficient, reflecting the relative site effect for each period, assuming zero mean for all stations.

• Response parameters are acceleration and velocity for 5% damping.
• Depths between 1 (includes earthquakes with depths reported as 0km) and 158km. Exclude earthquakes with focal depths greater than 200km.
• Exclude records with vectorial composition of PGA less than 0.01m∕s2.
• Exclude data from stations which have recorded less than two records, because the station coefficient could not be determined adequately. Use records from 823 stations.
• Most records from distances between 50 and 300km.
• Use three-stage iterative partial regression method.
• For T ≥ 5s constrain horizontal anelastic coefficient to zero because get positive coefficient.