Characteristics of the seismic attenuation in two tectonically active zones of Southern Europe |
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| Authors: | E Del Pezzo S De Martino F De Miguel J Ibanez A Sorgente |
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| Institution: | (1) Istituto di Scienze della Terra, Università di Catania, Corso-Italia-55-I-95129, Catania, Italy;(2) Present address: Dipartimento di Fisica, Università di Salerno, 1-84081 Baronissi (SA), Italy;(3) Dipartimento di Fisica, Università di Salerno, 1-84081 Baronissi (SA), Italy;(4) Osservatorio de Cartuja, Universidad de Granada, Granada, Spain |
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| Abstract: | The seismic energy attenuation in the frequency range of 1–18 Hz was studied in the two tectonically active zones of Irno Valley (Southern Italy) and Granada Basin (South-East Spain). Data were recorded by short period vertical components seismographs for low-magnitude local earthquakes. The method of coda waves, assuming singleS toS scattering approximation, was used to calculate the quality factorQ from the two data set. Results show a quality factor increasing with frequency, following the empirical lawQ=Q
o
f
n
.Q
o
andn are lower for the Irno Valley than for Granada. This result is interpreted in terms of different scattering environments present in the two investigated areas. |
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| Keywords: | Seismotectonics attenuation coda waves |
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