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Authors: Giampiccolo, E.*
Musumeci, C.*
Falà, F.*
Gresta, S.*
Title: Seismological investigations in the Gioia Tauro Basin (southern Calabria, Italy)
Issue Date: Oct-2008
Series/Report no.: 5-6/51 (2008)
Keywords: Southern Calabria
Stress tensor
Source parameters
Abstract: This study provides new seismological information to characterize the seismically active area of the Gioia Tauro basin (southern Calabria, Italy). Seismic activity recorded by a temporary network from 1985 to 1994 was analyzed for focal mechanisms, stress tensor inversion, P-wave seismic attenuation and earthquake source parameters estimation. Fault plane solutions of selected events showed a variety of different mechanisms, even if a prevalence of normal dip-slip solutions with prevalent rupture orientations occurring along ca. NE-SW directions was observed. Stress tensor inversion analysis disclosed a region governed mainly by a NW-SE extensional stress regime with a nearly vertical σ1. These results are consistent with the structure movements affecting the studied area and with geodetic data. Furthermore, evaluation of P-waves seismic attenuation and earthquake source parameters of a subset of events highlighted a strong heterogeneity of the crust and the presence of fault segments and/or weakened zones where great stress accumulation or long-rupture propagation are hindered.
Appears in Collections:04.06.03. Earthquake source and dynamics
Annals of Geophysics

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