  In recent years, considerable attention has been paid to research and
development methods able to assess the seismic energy propagation on the
territory. The seismic energy propagation is strongly related to the complexity
of the source and it is affected by the attenuation and the scattering effects
along the path. Thus, the effect of the earthquake is the result of a complex
interaction between the signal emitted by the source and the propagation
effects. The purpose of this work is to develop a methodology able to reproduce
the propagation law of seismic energy, hypothesizing the "transmission"
mechanisms that preside over the distribution of seismic effects on the
territory, by means of a structural optimization process with a predetermined
energy distribution. Briefly, the approach, based on a deterministic physical
model, determines an objective correction of the detected distributions of
seismic intensity on the soil, forcing the compatibility of the observed data
with the physical-mechanical model. It is based on two hypotheses: (1) the
earthquake at the epicentre is simulated by means of a system of distortions
split into three parameters; (2) the intensity is considered coincident to the
density of elastic energy. The optimal distribution of the beams stiffness is
achieved, by reducing the difference between the values of intensity
distribution computed on the mesh and those observed during four regional
events historically reported concerning the Campania region (Italy).
