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, www.upstrat-mafa.ov.ingv.it/UPstrat/) 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 parameters to obtain the best candidate quality factor Q to be used in this area for seismic risk purposes.
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Acknowledgments
This work has been partially supported by the following projects: V2-Precursori di Eruzioni in Vulcani Quiescenti: Campi Flegrei e Vulcano-Convenzione INGV-DPC (2012–2013); EPHESTOS CGL2011-2949-C02-01 (University of Granada, Instituto Andaluz de Geofisica); MEDiterranean SUper-site Volcanoes (MED-SUV) FP7 ENV.2012.6.4-2 grant agreement no. 308665 (European Community); and Urban Disaster Prevention Strategies Using MAcroseimic Fields and Fault Sources (UPStrat-MAFA), http://upstratmafa.ov.ingv.it/UPStrat/ (European Community). Jens Havskov is gratefully acknowledged for his helpful revision.
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Del Pezzo, E., Bianco, F., Giampiccolo, E. et al. A reappraisal of seismic Q evaluated at Mt. Etna volcano. Receipt for the application to risk analysis. J Seismol 19, 105–119 (2015). https://doi.org/10.1007/s10950-014-9453-0
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DOI: https://doi.org/10.1007/s10950-014-9453-0