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Authors: Del Pezzo, E.*
Ibanez, J.*
Morales, J.*
Akinci, A.*
Maresca, R.*
Title of journal: Bulletin of the Seismological Society of America
Series/Report no.: 5/85 (1995)
Publisher: Seismological Society of America
Issue Date: Oct-1995
Keywords: Seismic scattering
Seismic attenuation
Abstract: Intrinsic 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.
Appears in Collections:04.06.09. Waves and wave analysis
Papers Published / Papers in press

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