Southern Italy: An Intricate Litosphere
Description:
High-resolution adjoint tomography stands out as a valuable method for comprehending the complexities of the Earth's lithosphere. This paper offers an overview of the seismic images resulting from IMAGINE_IT adjoint tomography in the study of the lithosphere beneath Southern Italy and the Adriatic region.
The Adria plate plays a crucial role in the geodynamics of the Central Mediterranean, serving as the foreland of non-coeval mountain ranges. Its margins are subjected to subduction systems beneath the Alps to the north, the Apennines to the west, and the Dinarides to the east. The intricate behavior of this system, combined with geographical data heterogeneity, has led to a fragmented understanding of the Adria plate. The lithospheric structure, specifically Vp and Vs profiles, remains poorly understood due to limited seismic stations, compromised earthquake location quality, and a lack of coverage by traditional seismic tomography methods. These uncertainties complicate the assessment of seismic hazards along the Adriatic coasts, including tsunami hazard evaluation. We present a preliminary analysis incorporating seven years of supplementary data beyond IMAGINE_IT original timeframe (limited to data until 2015). Noteworthy contributions come from the deployment of dense regional arrays of broadband seismic stations, such as AlpArray and the ongoing AdriaArray initiative.
Furthermore, the focus extends to southern Italy, covering the L’Aquila region up to the Calabrian Arc. The analysis of images produced by high-resolution adjoint tomography IMAGINE_IT reveals details of the lithospheric architecture, including crustal thickness variations, seismic velocity anomalies, and clear support of a significant interruption of delamination/subduction-related features.
Session: 3D Wavefield Simulations: From Seismic Imaging to Ground Motion Modelling [Poster Session]
Type: Poster
Date: 5/2/2024
Presentation Time: 08:00 AM (local time)
Presenting Author: Emanuele
Student Presenter: No
Invited Presentation:
Authors
Emanuele Casarotti Presenting Author Corresponding Author emanuele.casarotti@ingv.it Istituto Nazionale di Geofisica e Vulcanologia - INGV |
Federica Magnoni federica.magnoni@ingv.it Istituto Nazionale di Geofisica e Vulcanologia - INGV |
Maria Grazia Ciaccio mariagrazia.ciaccio@ingv.it Istituto Nazionale di Geofisica e Vulcanologia - INGV |
Raffaele Di Stefano raffaele.distefano@ingv.it Istituto Nazionale di Geofisica e Vulcanologia - INGV |
|
|
|
|
|
Southern Italy: An Intricate Litosphere
Category
3D Wavefield Simulations: From Seismic Imaging to Ground Motion Modelling