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.
D'Alessandro, A., Martorana, R., Capizzi, P., & Luzio, D. (2015). Assessment of the reliability of the SPAC method in urban areas. In Near Surface Geoscience 2015 - 21st European Meeting of Environmental and Engineering Geophysics (pp.366-370). European Association of Geoscientists and Engineers, EAGE [10.3997/2214-4609.201413737].
Autori: | D'Alessandro, A.; Martorana, R.; Capizzi, P.; Luzio, D. | |
Titolo: | Assessment of the reliability of the SPAC method in urban areas | |
Settore Scientifico Disciplinare: | Settore GEO/11 - Geofisica Applicata | |
Data di creazione: | 2015-09-06 | |
Nome del convegno: | 21st European Meeting of Environmental and Engineering Geophysics, Near Surface Geoscience 2015 | |
Luogo del convegno: | ita | |
Anno del convegno: | 2015 | |
Numero del convegno: | 21 | |
Data di pubblicazione: | 2015 | |
Formato: | Online | |
Numero di pagine: | 5 | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.3997/2214-4609.201413737 | |
URL: | http://www.earthdoc.org/publication/publicationdetails/?publication=82332 | |
Citazione: | D'Alessandro, A., Martorana, R., Capizzi, P., & Luzio, D. (2015). Assessment of the reliability of the SPAC method in urban areas. In Near Surface Geoscience 2015 - 21st European Meeting of Environmental and Engineering Geophysics (pp.366-370). European Association of Geoscientists and Engineers, EAGE [10.3997/2214-4609.201413737]. | |
Tipologia: | 0 - Proceedings (TIPOLOGIA NON ATTIVA) | |
Appare nelle tipologie: | 0 - Proceedings (TIPOLOGIA NON ATTIVA) |
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