Validation of One Predominant Frequency Presence in Seismic Ground Displacement by Means of Deformation Response Spectra

There are very few results in the literature on spectral content of seismic ground displacement; nonetheless, these singular as most is limited to a narrow low frequency band, contrary acceleration. These characterizations have been obtained, expectedly, by means power or Fourier analyses displacement records, only. As records not reliable acceleration existence clear predominant warrants confirmation through different procedure. We propose corroboration method this highly narrow-band characteristic that based more dependable signal, rather than same record subject study. Specifically, response spectra analyzed (which rely records) verify previously observed neat frequencies displacement, which novelty.