3D ultra-high resolution seismic imaging of shallow Solfatara crater in Campi Flegrei (Italy): New insights on deep hydrothermal fluid circulation processes
| Autor: | Gaetano Festa, Guido Russo, Aldo Zollo, Ortensia Amoroso, Pier Paolo Bruno, Vincenzo Serlenga, Marceau Gresse, Grazia De Landro, Jean Vandemeulebrouck |
|---|---|
| Přispěvatelé: | De Landro, Grazia, Serlenga, Vincenzo, Russo, Guido, Amoroso, Ortensia, Festa, Gaetano, Bruno, Pier Paolo Gennaro, Gresse, Marceau, Vandemeulebrouck, Jean, Zollo, Aldo |
| Rok vydání: | 2017 |
| Předmět: |
010504 meteorology & atmospheric sciences
Science CALIFORNIA Aquifer natural hazard 010502 geochemistry & geophysics environmental impact 01 natural sciences Article Hydrothermal circulation Impact crater DEFORMATION TOMOGRAPHY 3-DIMENSIONAL VELOCITY STRUCTURE Caldera INVERSION Tephra Petrology 0105 earth and related environmental sciences environmental impact natural hazard geography Multidisciplinary geography.geographical_feature_category IDENTIFICATION VOLCANO EVOLUTION Fumarole RESTLESS CALDERA UNREST EPISODES Volcano 13. Climate action Seismic tomography Medicine Geology |
| Zdroj: | Scientific reports (Nature Publishing Group) 7 (2017). doi:10.1038/s41598-017-03604-0 info:cnr-pdr/source/autori:De Landro, Grazia; Serlenga, Vincenzo; Russo, Guido; Amoroso, Ortensia; Festa, Gaetano; Bruno, Pier Paolo; Gresse, Marceau; Vandemeulebrouck, Jean; Zollo, Aldo/titolo:3D ultra-high resolution seismic imaging of shallow Solfatara crater in Campi Flegrei (Italy): New insights on deep hydrothermal fluid circulation processes/doi:10.1038%2Fs41598-017-03604-0/rivista:Scientific reports (Nature Publishing Group)/anno:2017/pagina_da:/pagina_a:/intervallo_pagine:/volume:7 Scientific Reports, Vol 7, Iss 1, Pp 1-10 (2017) Scientific Reports |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-017-03604-0 |
| Popis: | 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 CO2 flux measurements, define the following characteristics: 1. A depth-dependent P-wave velocity layer down to 14 m, with Vp 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 CO2 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|