3D structure of the Campi Flegrei caldera central sector reconstructed through short-period magnetotelluric imaging

3D structure of the Campi Flegrei caldera central sector reconstructed through short-period magnetotelluric imaging | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article 3D structure of the Campi Flegrei caldera central sector reconstructed through short-period magnetotelluric imaging Antonio Troiano, Maria Giulia Di Giuseppe, Roberto Isaia This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-2155564/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 8 You are reading this latest preprint version Abstract The Campi Flegrei caldera experienced an unrest phase dating to 2005, which primary expression is the impressive ground uplift, accompanied by increasing degassing and seismic activities. Such last two phenomena developed mainly in the caldera central sector, including the Solfatara – Pisciarelli complex. However, the inner structure of such an area is still not defined, and this originates a poor understanding of the ongoing unrest. This paper describes the results of a new magnetotelluric survey performed in the Campi Flegrei caldera central sector. Through the inversion of data collected in 47 independent soundings, a 3D model of the electrical resistivity has been retrieved, which evidenced a partition of the investigated structure. The Agnano – Astroni area seems to be associated with a liquid-dominated geothermal reservoir, whereas the Solfatara – Pisciarelli area seems to be characterized by a single mixed liquid and gasses -dominated geothermal reservoir, which supplies the main caldera fumaroles. The proposed reconstruction of the geometrical characteristics of the hydrothermal system and the primary fluid rising pathways gives substantial clues about the significance of the detected structures in the evolution of the caldera unrest. Earth and environmental sciences/Solid earth sciences/Geophysics Earth and environmental sciences/Solid earth sciences/Volcanology Figures Figure 1 Figure 2 Figure 3 Full Text Additional Declarations No competing interests reported. Supplementary Files datafiles.zip supplementary1st.pdf SM01.jpg SM02.jpg SM03.jpg SM04.jpg SM05.jpg Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Major revision 04 Nov, 2022 Reviews received at journal 29 Oct, 2022 Reviewers agreed at journal 18 Oct, 2022 Reviewers invited by journal 18 Oct, 2022 Editor assigned by journal 17 Oct, 2022 Editor invited by journal 17 Oct, 2022 Submission checks completed at journal 17 Oct, 2022 First submitted to journal 11 Oct, 2022 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-2155564","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":144839886,"identity":"27a1ff35-c9dc-4cb7-8570-e7c3e2324b7f","order_by":0,"name":"Antonio 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