A geophysical multidisciplinary approach to investigate the shallow subsoil structures in volcanic environment: The case of Ischia Island

Nardone, Lucia; Vassallo, Maurizio; Cultrera, Giovanna; Sapia, Vincenzo; Petrosino, Simona; Pischiutta, Marta; Di Vito, Mauro; de Vita, Sandro; Galluzzo, Danilo; Milana, Giuliano; Bellucci Sessa, Eliana; Bobbio, Antonella; Bordoni, Paola; Cara, Fabrizio; Carandente, Antonio; Civico, Riccardo; Cogliano, Rocco; Cusano, Paola; Di Giulio, Giuseppe; Esposito, Roberta; Famiani, Daniela; Fodarella, Antonio; Giannattasio, Fabio; Marchetti, Marco; Marotta, Enrica; Moretti, Milena; Napolitano, Ferdinando; Pucillo, Stefania; Riccio, Gaetano; Sepe, Vincenzo; Tarabusi, Gabriele; Tramelli, Anna

doi:10.1016/j.jvolgeores.2023.107820

Cited by 5 publications

(1 citation statement)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3c) but is still significantly large (about 0.2%) for such a small magnitude earthquake (Taira et al, 2018). At station IFOR, located in the southern part of the island, we again observe a depth dependence of the coseismic drop (Poli et al, 2020), highlighting largest damage due to the presence of less consolidate shallow rocks (Foda & Chang, 1995;Nardone et al, 2023).…”

Section: Dynamic Response To the Mw 39 Casamicciola Earthquakementioning

confidence: 54%

Short- and long-term velocity variations and strain evolution at Ischia (ITALY) and their implications for dynamics of the hydrothermal system

Tarantino,

Poli,

Vassallo

et al. 2024

Preprint

View full text Add to dashboard Cite

In active volcanic systems, the elevated pressurization of fluids and the movement of melt materials have an enormous influence on the stress-state of rocks and their mechanical behavior. We use seismic ambient noise to evaluate the static seismic velocity variations related to long-term volcanic deformation, and the dynamic changes associated with the 2017 Casamicciola earthquake (Mw 3.9), in the active volcanic complex of the Ischia Island (Italy). Our study reveals a significant dynamic velocity reduction mostly related to the near-surface damage, with a permanent drop near the red zone, that we posit to be related to the documented landslides and the subsidence observed immediately after the earthquake. We also report a positive long-term linear trend of velocity variations, sensitive to a generalized contraction of the Ischia Caldera that we revealed with geodetic modeling. Our results suggest a depressurization of the shallow hydrothermal system, through degassing along faults or sills.

show abstract

Section: Dynamic Response To the Mw 39 Casamicciola Earthquakementioning

confidence: 54%

Short- and long-term velocity variations and strain evolution at Ischia (ITALY) and their implications for dynamics of the hydrothermal system

Tarantino,

Poli,

Vassallo

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

Shear-wave velocity imaging of weathered granite in La Campana (Chile) from Bayesian inversion of micro-tremor H/V spectral ratios

Trichandi,

Bauer,

Ryberg

et al. 2023

Journal of Applied Geophysics

View full text Add to dashboard Cite

Short‐ and Long‐Term Seismic Velocity Variations and Strain Evolution at Ischia (Italy): Implications for Dynamics of the Hydrothermal System

Tarantino,

Poli,

Vassallo

et al. 2024

Geophysical Research Letters

View full text Add to dashboard Cite

In active volcanic systems, the elevated pressurization of fluids and the movement of molten materials influence the stress state and mechanical behavior of rocks, but the direct measurement of these processes and the related evolution of rocks properties is difficult. By studying seismic velocity variations, we quantify the physical changes in rocks induced by long‐term volcanic deformation and the dynamic changes associated with the 2017 Casamicciola earthquake (Mw 3.9) in the active volcanic complex of Ischia Island, Italy. Our study reveals a significant dynamic velocity reduction (∼0.2%), primarily due to near‐surface damage, with a permanent drop linked to documented landslides and subsidence observed immediately after the earthquake. We also identified a positive long‐term linear trend in velocity variations, indicative of a generalized contraction of the Ischia Caldera, as revealed by geodetic modeling. Our results suggest a depressurization of the shallow hydrothermal system through degassing along faults or sills.

show abstract

A geophysical multidisciplinary approach to investigate the shallow subsoil structures in volcanic environment: The case of Ischia Island

Cited by 5 publications

References 47 publications

Short- and long-term velocity variations and strain evolution at Ischia (ITALY) and their implications for dynamics of the hydrothermal system

Short- and long-term velocity variations and strain evolution at Ischia (ITALY) and their implications for dynamics of the hydrothermal system

Shear-wave velocity imaging of weathered granite in La Campana (Chile) from Bayesian inversion of micro-tremor H/V spectral ratios

Short‐ and Long‐Term Seismic Velocity Variations and Strain Evolution at Ischia (Italy): Implications for Dynamics of the Hydrothermal System

Contact Info

Product

Resources

About