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| Titel |
Crustal deformation in the Calabro-Peloritan area from GPS measurements: an analytical model of the local tectonic |
| VerfasserIn |
M. Mattia, M. Palano, V. Bruno, F. Cannavò |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250021323
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| Zusammenfassung |
| On 1908 December 28 a Mw=7.1 earthquake struggled the cities of Messina and Reggio
Calabria causing more than 100.000 casualties. Since that dramatic episode, geologists and
geophysicists have attempted to understand the complex tectonic of the Calabro-Peloritan
Arc, with the aim to improve the knowledge of the active faults of this area and the seismic
hazard. In this work we have studied the deformation pattern along the southernmost part of
the Calabro-Peloritan Arc through 12 years of GPS measurements. We present and discuss
mayor results, in terms of rates of movements along the principal fault systems and of
velocity field (computed in an Eurasian reference frame) and strain-rate field of the
investigated area. In particular, we have found that a 0.15 μstrain/yr extension across the
Messina Strait and across the Aeolian-Tindari-Letoianni fault system is acting. Moreover,
an N-S compressive strain (0.65 μstrain/yr) is acting across Vulcano and Lipari
Islands coupled with an extensional strain-rate of 0.15 μstrain/yr in E-W direction.
The results are also investigated through a simplified analytical model of the local
tectonic, taking into account the regional context at a larger scale (Eurasia-Africa
convergence). The results inferred from the analytical inversion of geodetic velocities
have been compared with structural and seismological data of the investigated area. |
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