Reconstructing Hydrothermal Fluid Pathways and Storage at the Solfatara Crater (Campi Flegrei, Italy) Using Seismic Scattering and Absorption

Publication type:
Journal article
Metadata:
Abstract
<jats:p>Imaging of fluid pathways is crucial to characterize processes taking place in hydrothermal systems, a primary cause of volcanic unrest and associated hazards. The joint imaging of seismic absorption and scattering is an efficient instrument to map fluid flow at crustal scale, and specifically in volcanoes; however, this technique has so far been applied to image volcanoes and hydrothermal systems at the kilometre scale. Here, we use data from a meter-scale, active seismic survey inside the shallow structure of the Solfatara crater to obtain the first frequency-dependent near-surface scattering and absorption model of a hydrothermal system. The Solfatara crater is the place used to monitor historic unrest at Campi Flegrei caldera (Italy), a high-risk volcano under continuous surveillance due to its closeness to a densely populated area. Improving the imaging of the shallow part of this system is crucial to broaden the understanding of unrest processes that are progressively characterizing other portions of the eastern caldera. The scattering contrasts highlight the primary structural feature, a fault separating the hydrothermal plume from zones of CO<jats:sub>2</jats:sub>saturation nearing fumaroles. While high-absorption anomalies mark zones of high soil temperatures and CO<jats:sub>2</jats:sub>fluxes, low-absorption anomalies indicate zones of very shallow upflow and are caused by contrasts between liquid-rich and vapour-rich fluids coming from mud pools and fumaroles, respectively. All maps show a SW-NE trend in anomalies consistent with fluid-migration pathways towards the eastern fumaroles. The results provide structural constraints that clarify mechanisms of fluid migration inside the crater. The techniques offer complementary geophysical images to the interpretation of hydrothermal processes and prove that seismic attenuation measurements are suitable to map fluid pathways in heterogeneous media at a detailed scale.</jats:p>
Autoren
  • Maria Del Pilar Di Martino
  • Luca De Siena
  • Vincenzo Serlenga
  • Grazia De Landro
DOI
10.3389/feart.2022.852510
eISSN
2296-6463
Zeitschrift
Frontiers in Earth Science
Online publication date
2022
Status
Published online
Herausgeber
Frontiers Media SA
Herausgeber URL
http://dx.doi.org/10.3389/feart.2022.852510
Datum der Datenerfassung
2023
Titel
Reconstructing Hydrothermal Fluid Pathways and Storage at the Solfatara Crater (Campi Flegrei, Italy) Using Seismic Scattering and Absorption
Ausgabe der Zeitschrift
10

Data source: Crossref

Other metadata sources:
Author's licence
CC-BY
Autoren
  • Maria Del Pilar Di Martino
  • Luca De Siena
  • Vincenzo Serlenga
  • Grazia De Landro
Hosting institution
Universitätsbibliothek Mainz
Sammlungen
  • DFG-491381577-G
Resource version
Published version
DOI
10.3389/feart.2022.852510
Funding acknowledgements
  • Gefördert durch die Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 491381577
File(s) embargoed
false
Open access
true
ISSN
2296-6463
Zeitschrift
Frontiers in earth science
Schlüsselwörter
  • 550 Geowissenschaften
  • 550 Earth sciences
Sprache
eng
Open access status
Open Access
Paginierung
852510
Datum der Veröffentlichung
2022
Public URL
https://openscience.ub.uni-mainz.de/handle/20.500.12030/8089
Herausgeber
Frontiers Media
Herausgeber URL
https://www.frontiersin.org/articles/10.3389/feart.2022.852510/full
Datum der Datenerfassung
2022
Datum, an dem der Datensatz öffentlich gemacht wurde
2022
Zugang
Public
Titel
Reconstructing hydrothermal fluid pathways and storage at the Solfatara Crater (Campi Flegrei, Italy) using seismic scattering and absorption
Ausgabe der Zeitschrift
10

Files

reconstructing_hydrothermal_f-20221017142411477.pdf

Data source: OPENSCIENCE.UB

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