A variational approach for energy-based analysis of near-fault pulse-like seismic records
Near-fault earthquakes often exhibit a pulse in the velocity time-history that mainly occurs in the strike-normal direction at locations towards which the earthquake rupture has propagated. The extraction of the dominant impulsive component embedded into such kind of seismic records and the proper consideration of the other signal modes are critical tasks for a reliable prediction of the behavior of structural systems subjected to earthquakes close to active faults.