- Ground-motion model is:
where amax is in cm∕s2, M0 is in dyncm and R is in cm, ϕ1 = 0.0451, ϕ2 = 0.3089, ϕ3 = 0.9642 and
σ = 0.3148.
- Instruments in basement of buildings located on rock or very stiff ground.
- Records from 21 different stations.
- Focal depths between 1 and 11km.
- Most records from digital instruments with 200Hz sampling frequency and high dynamic range.
- Seismic moments calculated using the strong-motion data.
- Most data from M0 ≤ 5 × 1023dyncm and from de ≤ 40km.