Assessment of the reliability of the SPAC method in urban areas

Raffaele Martorana, Dario Luzio, Patrizia Capizzi, Antonino D'Alessandro, D'Alessandro, D'Alessandro, D'Alessandro, D'Alessandro, Antonino D'Alessandro

Risultato della ricerca: Otherpeer review

Abstract

We have carried out several long-term measures of seismic noise with triangular arrays of broad-band seismic sensors, to investigate the reliability of the SPAC method in urban areas. We investigate the stationary and anisotropy of the microtremor wave field. We have found that the anisotropy of the microtremor wave field can be evaluated analyzing the HVNSR as function the azimuth. Furthermore, we showed as strong anisotropies in the microtremors are often observable in particular at high frequencies (> 1 Hz). We have verified as microtremors can be difficult to considered as ergodic processes, and for this reason time averaging, also even over a long periods of time, cannot replace an appropriate azimuthal sampling.
Lingua originaleEnglish
Pagine366-370
Numero di pagine5
Stato di pubblicazionePublished - 2015

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geotechnical Engineering and Engineering Geology
  • Environmental Engineering

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