Publication Date:
2024-02-08
Description:
Active normal faulting and uplifting, consistent with a WNW-ESE-oriented regional
extension, dominate the Quaternary tectonics of the southern Calabrian Arc. The
main tectonic structures of this extensional domain are considered to be the source
of numerous historical and recent strong earthquakes, among which the
1783 seismic sequence (M 6.5–7) was one of the most destructive earthquakes
ever recorded in Southern Italy. Previous works on the seismotectonic of the
Calabrian Arc indicate a disagreement on the attitude (E-dipping vs W-dipping)
of the main seismogenic sources slicing across southern Calabria, whereby the
seismotectonic framework is still debated. Following a multidisciplinary approach,
based on morpho-structural and seismological data, the geometry at depth of the
most reliable sources (i.e., Cittanova and Serre faults) was first modelled in a 3D
environment to retrieve information about their seismic potential. The GNSS data
from the permanent stations of RING/RDN and TopNETlive Italy networks have
been processed in order to estimate the velocity field affecting this area. Then, data
inversion allowed us to document a predominant WNW-ESE active extensional
strain orthogonally to the modelled faults, consistent with the regional dynamics.
The reliability of the model was tested using empirical relationships and fault
response modelling simulation. Furthermore, slip tendency analysis revealed the
propensity to slip of the modelled planes by applying a remote stress state derived
from the kinematic-structural survey on fault planes.
Description:
PRIN 2017, under grant number “2017KT2MKE”
PIAno di inCEntivi per la RIcerca di Ateneo (PIACERI 2020/2022)
Description:
Published
Description:
1240051
Description:
OST3 Vicino alla faglia
Description:
JCR Journal
Keywords:
Calabrian Arc
;
active tectonics
;
seismogenic faults
;
3D modelling
;
fault response modelling
;
04. Solid Earth
;
04.07. Tectonophysics
;
05.08. Risk
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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