Publication Date:
2023-11-21
Description:
3D earthquake locations, focal mechanisms and stress tensor distribution in a 16-
month interval covering the 2018 Mt. Etna flank eruption, enabled us to investigate
the relationship between magma intrusion and structural response of the volcano
and shed light on the dynamic processes affecting the instability of Mt. Etna. The
magma intrusion likely caused tension in the flanks of the volcano, leading to significant
ground deformation and redistribution of stress on the neighbouring faults
at the edge of Mt. Etna's unstable sector, encouraging the ESE sliding of the eastern
flank of the volcano. Accordingly, FPSs of the post-eruptive events show strike slip
faulting mechanisms, under a stress regime characterized by a maximum compressive
σ1, NE-SW oriented. In this perspective, any flank eruption could temporarily
enhance the sliding process of both the southern and eastern flanks of the volcano.
Description:
Published
Description:
334-344
Description:
5V. Processi eruttivi e post-eruttivi
Description:
JCR Journal
Keywords:
Mt. Etna
;
volcano
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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