Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/6949
AuthorsDel Pezzo, E.* 
Ibanez, J.* 
Morales, J.* 
Akinci, A.* 
Maresca, R.* 
TitleMEASUREMENTS OF INTRINSIC AND SCATTERING SEISMIC ATTENUATION IN THE CRUST
Issue DateOct-1995
Series/Report no.5/85 (1995)
URIhttp://hdl.handle.net/2122/6949
KeywordsSeismic scattering
Seismic attenuation
Subject Classification04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis 
AbstractIntrinsic and scattering attenuation parameters, Q~ and Qs, have been measured in three different tectonic areas for local and shallow earthquakes located close to the receiver. The approach developed by Wennerberg (1993), which takes into account the numerical correction of the coda-Q parameter for the multiple scat- tering formulation of Zeng, was used to infer from the estimates of coda Q and direct S-wave Q the intrinsic (Qi) and scattering (Qs) Q values. Results for 1 to 12 Hz range show that Q~ is comparable to Qs for the Etna volcano and for the Campi Flegrei area, while Qi for the tectonically active area of Granada is lower than Qs. Coda Q is close to intrinsic Q, suggesting that, at least in the crust, coda Q is a good estimate of the intrinsic Q. Volcanic areas show a reasonable higher degree of heterogeneity, if compared with the nonvolcanic area of Granada.
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