Seismotectonics of Southern Calabria Terrane(South Italy) Seismotectonics of Southern Calabria Terrane(South Italy)

最小化 最大化

Vol19 No.11: 3148-3162 

Title】Seismotectonics of Southern Calabria Terrane(South Italy)

Author】Vincenzo TRIPODI1; Anna GERVASI2; Mario LA ROCCA3;. Federica Lucà3; Francesco MUTO3*

Addresses】1 National Research Council of Italy (CNR)—Research Institute for Geo-Hydrological Protection (IRPI), Rende 87036, Italy; 2 National Institute of Geophysics and Volcanology (INGV), National Earthquake Observatory Section, Roma 00143, Italy; 3 Department of Biology, Ecology and Earth Science (DiBEST), University of Calabria, Rende 87036, Italy

Corresponding author】Francesco MUTO

Citation】Tripodi V, Gervasi A, La Rocca M, et al. (2022) Seismotectonics of Southern Calabria Terrane (South Italy). Journal of Mountain Science 19(11). https://doi.org/10.1007/s11629-022-7354-1

DOI】https://doi.org/10.1007/s11629-022-7354-1

Abstract】Seismic data of earthquakes recorded during the last 40 years in southern Calabria have been compared with geological data in order to obtain a seismotectonic picture of the area. We sought for any possible correlation between the main regional tectonic structures, the distribution of earthquake hypocentres and the focal mechanism of earthquakes with magnitude (Ml)≥3. Studies of historical and recent seismicity and analysis of geological structures allowed to define the main shear strips on a regional scale. More than 2600 earthquakes with 1.5 ≤ Ml ≤ 4.5 have been considered. The focal mechanisms of earthquakes with Ml≥3 have been compared with the kinematics of known faults and used to give insight on the current active stress field. From the analysis carried out it was possible to expand the cognitive framework regarding the activity of the main tectonic structures present in the area. This study also served to identify areas of high seismicity which do not correspond to any evidence of tectonic structures on the surface, and areas where recognized tectonic structures have not shown any seismicity during the last decades. These cases could be the subject of future investigation in order to correctly assess the seismic hazard in Calabria. This task is important in the context of seismic hazard evaluation and mitigation.

Keywords】Calabria;Seismicity;Tectonics;Earthquakes