Seismological constraints on the 2018 Mt. Etna (Italy) flank eruption and implications for the flank dynamics of the volcano

• DOI: 10.1111/ter.12463
• Publication Date: 2020-03-16T08:41:47Z
• Authors: Salvatore Alparone; Graziella Barberi; Elisabetta Giampi...; Vincenza Maiolino; Antonino Mostaccio; Carla Musumeci; Antonio Scaltrito; Luciano Scarfì; Tiziana Tuvè; Andrea Ursino
• Keywords: Flank; Lateral eruption

Abstract 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 relationship between magma intrusion structural response of volcano shed light on dynamic processes affecting instability Etna. The likely caused tension flanks volcano, leading significant ground deformation redistribution neighbouring faults at edge Etna's unstable sector, encouraging ESE sliding eastern volcano. Accordingly, FPSs post‐eruptive events show strike slip faulting mechanisms, under regime characterized by maximum compressive σ 1 , NE‐SW oriented. In this perspective, any eruption could temporarily enhance process both southern