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Authors: Azzaro, R.* 
Barberi, G.* 
Cannavò, F.* 
Cocina, O.* 
Palano, M.* 
Scarfì, L.* 
Title: Assessing seismic efficiency from scalar Moment-rates: an application to Mt. Etna volcano (Italy)
Issue Date: 19-Apr-2015
Keywords: Mt. Etna, moment-rates, seismic efficiency, creeping faults
Subject Classification04. Solid Earth::04.06. Seismology::04.06.02. Earthquake interactions and probability 
Abstract: Here we propose an improved estimation of the scalar seismic (from instrumental and historical catalogues), geodetic and geologic moment-rates for the eastern flank of Mt. Etna. The estimated moment-rates have been compared in terms of seismic efficiency. Results show that all the calculated efficiency values are lower than 40%, i.e., the geodetic moment-rate estimations are generally larger than the seismic and the geologic ones. Although a number of reasons may account for the observed discrepancy, we are confident that a large amount of the deformation affecting the eastern flank occurs aseismically.
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