- Ground-motion model is:
where c

_{i}(T) is an individual site amplification factor for each of 12 stations. - Response parameter is acceleration for 5% damping.
- Focal depths between 0 and 60km.
- Use data either recorded at ground surface where 0.5 ≤ V
_{s}≤ 2.7km∕s (1.7 ≤ V_{p}≤ 5.5km∕s) or obtained by analytically removing effects of uppermost surface layers of ground from underground observation data (or by stripping-off analysis) using underground structure. - Use only ground motion after arrival of first S wave because most important for aseismic design.
- Do not give table of coefficients, only graphs of coefficients.
- Define amplification factors, d
_{i}(T) = c_{i}(T) - c_{0}(T) for horizontal motion and d_{i}(T) = c_{v,i}(T) - c_{0}(T) for vertical motion, where c_{0}(T) is the regression coefficient for data observed at ground layer equivalent to seismic bedrock. - Find S
_{h}(T) = S_{b}(T)α_{h}(T)β_{h}(T) where S_{b}(T) is S_{0}(T). α_{h}(T) = (V_{s}∕V_{s,b})^{-δh(T)}for T ≤ T_{s,1}and α_{h}(T) = α_{h}(T_{s,1}) for T > T_{s,1}where T_{s,1}is the primary predominant period of surface layer. β_{h}(T) = 1 for T ≤ T_{s,1}, β_{h}(T) = (T∕T_{s,1})^{- log(αh(Ts,1))}for 10T_{s,1}> T > T_{s,1}and β_{h}(T) = 10^{- log(αh(Ts,1))}for T ≥ 10T_{s,1}. V_{s,b}= 2.2km∕s. Similar relationships are defined for vertical motion, S_{v}(T). - Note that relation does not include effect of source mechanism or rupture propagation, so probably less valid in near-fault region.