Analysis of near-fault pulse-like seismic signals through Variational Mode Decomposition technique
The present work illustrates the results obtained from the application of the Variational Mode Decomposition technique for processing near-fault pulse-like seismic signals. This method has been adopted to analyze a database of fault-normal horizontal impulsive seismic signal components and proved able to extract the mode that embeds the dominant pulse, which is approximated by means of well-known numerical pulse-like waveforms. Pulse period values estimated according to this technique are in good agreement with the ones obtained by means of existing methods.