The main characteristics of the lithosphere-asthenosphere system in Italy and surrounding regions |
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| Authors: | G Calcagnile G F Panza |
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| Institution: | (1) Istituto di Geodesia e Geofisica, Università di Bari, Bari, Italy |
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| Abstract: | We present a summary of the available information on Rayleigh-wave dispersion data for the Italian area. The dispersion curves can be grouped into two main families according to their shape: one with an almost linear trend in the period range from 40 to 150 sec the other with a relatively flat portion in the period range from 40 to 80 sec. The inversion of these data shows that there are strong lateral variation in the lithosphere system: a very rapid transition in the lithospheric thickness, from about 130 km to about 30 km, as well as in the S-wave velocity of the lithosphere and asthenosphere.Some cross-sections are described in order to have a more direct insight on the gross features of the upper mantle.An attempt is made to discuss the properties of the upper mantle taking into account the tectonic evolution of the Mediterranean. |
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| Keywords: | Rayleigh-wave dispersion in Italy Lithosphere-Asthenosphere of Italy Italy Rayleigh-wave dispersion |
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