Shear-velocity structure and dynamics beneath the Central Mediterranean inferred from seismic surface waves

Autor: Agius, Matthew, Magrini, Fabrizio, Diaferia, Giovanni, Kastle, Emanuel, Cammarano, Fabio, Faccenna, Claudio, Funiciello, Francesca, Van der Meijde, M.
Přispěvatelé: Department of Applied Earth Sciences, UT-I-ITC-4DEarth, Faculty of Geo-Information Science and Earth Observation
Jazyk: angličtina
Rok vydání: 2022
Zdroj: EGU General Assembly 2022
Popis: The evolution of the Sicily Channel Rift Zone (SCRZ), located south of the Central Mediterranean, is thought to accommodate the regional tectonic stresses of the Calabrian subduction system. It is unclear whether the rifting of the SCRZ is passive from far-field extensional stresses or active from mantle upwelling beneath. To map the structure and dynamics of the region, we measure Rayleigh- and Love-wave phase velocities from ambient seismic noise and invert for an isotropic 3-D shear-velocity and radial anisotropic model. Variations of crustal S-velocities coincide with topographic and tectonic features: slow under high elevation, fast beneath deep sea. The Tyrrhenian Sea has a VSV); areas experiencing compression and subduction-related volcanism have negative anisotropy (VSH
Databáze: OpenAIRE