INQUA ROMA 2023 -Session 204: Late Quaternary Faulting and Earthquake Geology in volcanic areas

Session 204: Late Quaternary Faulting and Earthquake Geology in volcanic areas In the last years, the study of complex volcano-tectonic stress field is providing new clues on the surface deformation of several volcanoes. Novel observations on volcano-tectonic features of the Ischia 2017 earthquake, Etna 2018 eruption and earthquake, and 2021 Cumbre Vieja eruption, for instance, are stimulating significant debate and allow testing a wide range of scientific ideas concerning the relations between regionally-controlled late-Quaternary fault systems, coseismic and aseismic surface rupture, magmatic activity (intrusions and eruptions) and seismic events. In particular, coseismic surface faulting has only rarely been documented in volcanic areas, which are characterized by low-energy earthquakes with magnitudes typically less than 4. New geologic coseismic data and the macroseismic data evaluated with ESI scale for understanding the surface- faulting mechanism due to small-size or moderate earthquakes in volcano-tectonic settings are very useful to complete the gap of the available database that are significantly lacking information for magnitude range 3.0 < M < 5.0. Moreover, the assignment of seismic intensity offers better spatial resolution, as well as an increase of the time window for the assessment of the seismic hazard, allowing to reduce the implicit uncertainty in the intensity attenuation laws in this peculiar volcano-tectonic setting. We welcome multidisciplinary contributions based on a wide range of methodologies dealing with volcano- tectonic faulting, fissures, fractures and earthquakes, in order to estimate rupture characteristics of past earthquakes, slip-rate, earthquake occurrence model as well as the potential for earthquake surface rupture, for the mitigation the surface faulting risks.