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3D ultra-high resolution seismic imaging of shallow Solfatara crater in Campi Flegrei (Italy): New insights on deep hydrothermal fluid circulation processes
Seismic tomography can be used to image the spatial variation of rock properties within complex geological media such as volcanoes. Solfatara is a volcano located within the Campi Flegrei, a still active caldera, so it is of major importance to characterize its level of activity and potential danger...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5469761/ https://www.ncbi.nlm.nih.gov/pubmed/28611382 http://dx.doi.org/10.1038/s41598-017-03604-0 |
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author | De Landro, Grazia Serlenga, Vincenzo Russo, Guido Amoroso, Ortensia Festa, Gaetano Bruno, Pier Paolo Gresse, Marceau Vandemeulebrouck, Jean Zollo, Aldo |
author_facet | De Landro, Grazia Serlenga, Vincenzo Russo, Guido Amoroso, Ortensia Festa, Gaetano Bruno, Pier Paolo Gresse, Marceau Vandemeulebrouck, Jean Zollo, Aldo |
author_sort | De Landro, Grazia |
collection | PubMed |
description | Seismic tomography can be used to image the spatial variation of rock properties within complex geological media such as volcanoes. Solfatara is a volcano located within the Campi Flegrei, a still active caldera, so it is of major importance to characterize its level of activity and potential danger. In this light, a 3D tomographic high-resolution P-wave velocity image of the shallow central part of Solfatara crater is obtained using first arrival times and a multiscale approach. The retrieved images, integrated with the resistivity section and temperature and the CO(2) flux measurements, define the following characteristics: 1. A depth-dependent P-wave velocity layer down to 14 m, with V(p) < 700 m/s typical of poorly-consolidated tephra and affected by CO(2) degassing; 2. An intermediate layer, deepening towards the mineralized liquid-saturated area (Fangaia), interpreted as permeable deposits saturated with condensed water; 3. A deep, confined high velocity anomaly associated with a CO(2) reservoir. These features are expression of an area located between the Fangaia, water saturated and replenished from deep aquifers, and the main fumaroles, superficial relief of the deep rising CO(2) flux. Therefore, the changes in the outgassing rate greatly affect the shallow hydrothermal system, which can be used as a “mirror” of fluid migration processes occurring at depth. |
format | Online Article Text |
id | pubmed-5469761 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-54697612017-06-19 3D ultra-high resolution seismic imaging of shallow Solfatara crater in Campi Flegrei (Italy): New insights on deep hydrothermal fluid circulation processes De Landro, Grazia Serlenga, Vincenzo Russo, Guido Amoroso, Ortensia Festa, Gaetano Bruno, Pier Paolo Gresse, Marceau Vandemeulebrouck, Jean Zollo, Aldo Sci Rep Article Seismic tomography can be used to image the spatial variation of rock properties within complex geological media such as volcanoes. Solfatara is a volcano located within the Campi Flegrei, a still active caldera, so it is of major importance to characterize its level of activity and potential danger. In this light, a 3D tomographic high-resolution P-wave velocity image of the shallow central part of Solfatara crater is obtained using first arrival times and a multiscale approach. The retrieved images, integrated with the resistivity section and temperature and the CO(2) flux measurements, define the following characteristics: 1. A depth-dependent P-wave velocity layer down to 14 m, with V(p) < 700 m/s typical of poorly-consolidated tephra and affected by CO(2) degassing; 2. An intermediate layer, deepening towards the mineralized liquid-saturated area (Fangaia), interpreted as permeable deposits saturated with condensed water; 3. A deep, confined high velocity anomaly associated with a CO(2) reservoir. These features are expression of an area located between the Fangaia, water saturated and replenished from deep aquifers, and the main fumaroles, superficial relief of the deep rising CO(2) flux. Therefore, the changes in the outgassing rate greatly affect the shallow hydrothermal system, which can be used as a “mirror” of fluid migration processes occurring at depth. Nature Publishing Group UK 2017-06-13 /pmc/articles/PMC5469761/ /pubmed/28611382 http://dx.doi.org/10.1038/s41598-017-03604-0 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article De Landro, Grazia Serlenga, Vincenzo Russo, Guido Amoroso, Ortensia Festa, Gaetano Bruno, Pier Paolo Gresse, Marceau Vandemeulebrouck, Jean Zollo, Aldo 3D ultra-high resolution seismic imaging of shallow Solfatara crater in Campi Flegrei (Italy): New insights on deep hydrothermal fluid circulation processes |
title | 3D ultra-high resolution seismic imaging of shallow Solfatara crater in Campi Flegrei (Italy): New insights on deep hydrothermal fluid circulation processes |
title_full | 3D ultra-high resolution seismic imaging of shallow Solfatara crater in Campi Flegrei (Italy): New insights on deep hydrothermal fluid circulation processes |
title_fullStr | 3D ultra-high resolution seismic imaging of shallow Solfatara crater in Campi Flegrei (Italy): New insights on deep hydrothermal fluid circulation processes |
title_full_unstemmed | 3D ultra-high resolution seismic imaging of shallow Solfatara crater in Campi Flegrei (Italy): New insights on deep hydrothermal fluid circulation processes |
title_short | 3D ultra-high resolution seismic imaging of shallow Solfatara crater in Campi Flegrei (Italy): New insights on deep hydrothermal fluid circulation processes |
title_sort | 3d ultra-high resolution seismic imaging of shallow solfatara crater in campi flegrei (italy): new insights on deep hydrothermal fluid circulation processes |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5469761/ https://www.ncbi.nlm.nih.gov/pubmed/28611382 http://dx.doi.org/10.1038/s41598-017-03604-0 |
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