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Authors: Del Pezzo, E.* 
Bianco, F.* 
Giampiccolo, E.* 
Tusa, G.* 
Tuvé, T.* 
Title: A reappraisal of seismic Q evaluated at Mt. Etna volcano. Receipt for the application to risk analysis
Issue Date: 2015
Series/Report no.: /19(2015)
DOI: 10.1007/s10950-014-9453-0
Keywords: Seismic attenuation
MLTWA method
Mt. Etna
Subject Classification04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis 
Abstract: A new approach in dealing with seismic risk in the volcanic areas of Italy, by taking into account the possible occurrence of damaging pre- or syn-eruptive seismic events, is exciting the scientific interest and is actually the topic developed in several research projects funded by the European Community (e.g., UPStrat- MAFA, and the Civil Defense Department of Italy. To achieve this goal, it is necessary to have a detailed knowledge of the local attenuation-distance relations. In the present paper, we make a survey of the estimates of the seismic quality factor of the medium reported in literature for the Etna area. In the framework of a similar paper published for the Campi Flegrei zone in Southern Italy, we first review the results on seismic attenuation already obtained for Etna and then apply a standard technique to separately measure intrinsic and scattering attenuation coefficients from passive seismic data recorded by the Etna seismological network. Indications are then given for the correct utilization of the attenuation parametersto obtain the best candidate quality factorQ to be used in this area for seismic risk purposes.
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