Delineation and Fine‐Scale Structure of Fault Zones Activated During the 2014–2024 Unrest at the Campi Flegrei Caldera (Southern Italy) From High‐Precision Earthquake Locations
Abstract In the past two decades, the central portion of Campi Flegrei caldera has experienced ground uplift up to 15 mm/month, with an increase of rate, magnitude and extent of the seismicity. In this work, we perform multi‐scale precise earthquake relocation of the 2014–2024 seismicity, mapping in...
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Wiley
2024-06-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2023GL107680 |
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| author | Francesco Scotto di Uccio Anthony Lomax Jacopo Natale Titouan Muzellec Gaetano Festa Sahar Nazeri Vincenzo Convertito Antonella Bobbio Claudio Strumia Aldo Zollo |
| author_facet | Francesco Scotto di Uccio Anthony Lomax Jacopo Natale Titouan Muzellec Gaetano Festa Sahar Nazeri Vincenzo Convertito Antonella Bobbio Claudio Strumia Aldo Zollo |
| author_sort | Francesco Scotto di Uccio |
| collection | DOAJ |
| description | Abstract In the past two decades, the central portion of Campi Flegrei caldera has experienced ground uplift up to 15 mm/month, with an increase of rate, magnitude and extent of the seismicity. In this work, we perform multi‐scale precise earthquake relocation of the 2014–2024 seismicity, mapping in detail activated fault zones. We relate the geometry, extent, and depth of these zones with up‐to‐date structural reconstructions of the caldera. The current seismicity is mainly driven by ground‐uplift‐induced stress concentration on pre‐existing, weaker fault zones, some of which identified for the first time. These structures are not only related to the inner caldera and dome resurgence but also to volcano‐tectonic events of the last 10 ka. The extent of imaged fault segments suggests they can accommodate ruptures up to a moment magnitude 5.1, significantly increasing seismic hazard in the area. |
| format | Article |
| id | doaj-art-e70ba879e43f4f43a2d72583e919c698 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2024-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-e70ba879e43f4f43a2d72583e919c6982025-08-20T01:52:06ZengWileyGeophysical Research Letters0094-82761944-80072024-06-015112n/an/a10.1029/2023GL107680Delineation and Fine‐Scale Structure of Fault Zones Activated During the 2014–2024 Unrest at the Campi Flegrei Caldera (Southern Italy) From High‐Precision Earthquake LocationsFrancesco Scotto di Uccio0Anthony Lomax1Jacopo Natale2Titouan Muzellec3Gaetano Festa4Sahar Nazeri5Vincenzo Convertito6Antonella Bobbio7Claudio Strumia8Aldo Zollo9Department of Physics Ettore Pancini Università di Napoli Federico II Napoli ItalyALomax Scientific Mouans‐Sartoux FranceDepartment of Earth and Geoenvironmental Sciences Università di Bari “Aldo Moro” Bari ItalyDepartment of Physics Ettore Pancini Università di Napoli Federico II Napoli ItalyDepartment of Physics Ettore Pancini Università di Napoli Federico II Napoli ItalyDepartment of Physics Ettore Pancini Università di Napoli Federico II Napoli ItalyIstituto Nazionale di Geofisica e Vulcanologia Osservatorio Vesuviano Napoli ItalyIstituto Nazionale di Geofisica e Vulcanologia Osservatorio Vesuviano Napoli ItalyDepartment of Physics Ettore Pancini Università di Napoli Federico II Napoli ItalyDepartment of Physics Ettore Pancini Università di Napoli Federico II Napoli ItalyAbstract In the past two decades, the central portion of Campi Flegrei caldera has experienced ground uplift up to 15 mm/month, with an increase of rate, magnitude and extent of the seismicity. In this work, we perform multi‐scale precise earthquake relocation of the 2014–2024 seismicity, mapping in detail activated fault zones. We relate the geometry, extent, and depth of these zones with up‐to‐date structural reconstructions of the caldera. The current seismicity is mainly driven by ground‐uplift‐induced stress concentration on pre‐existing, weaker fault zones, some of which identified for the first time. These structures are not only related to the inner caldera and dome resurgence but also to volcano‐tectonic events of the last 10 ka. The extent of imaged fault segments suggests they can accommodate ruptures up to a moment magnitude 5.1, significantly increasing seismic hazard in the area.https://doi.org/10.1029/2023GL107680earthquake locationscaldera Campi Flegreiimaging active faults |
| spellingShingle | Francesco Scotto di Uccio Anthony Lomax Jacopo Natale Titouan Muzellec Gaetano Festa Sahar Nazeri Vincenzo Convertito Antonella Bobbio Claudio Strumia Aldo Zollo Delineation and Fine‐Scale Structure of Fault Zones Activated During the 2014–2024 Unrest at the Campi Flegrei Caldera (Southern Italy) From High‐Precision Earthquake Locations Geophysical Research Letters earthquake locations caldera Campi Flegrei imaging active faults |
| title | Delineation and Fine‐Scale Structure of Fault Zones Activated During the 2014–2024 Unrest at the Campi Flegrei Caldera (Southern Italy) From High‐Precision Earthquake Locations |
| title_full | Delineation and Fine‐Scale Structure of Fault Zones Activated During the 2014–2024 Unrest at the Campi Flegrei Caldera (Southern Italy) From High‐Precision Earthquake Locations |
| title_fullStr | Delineation and Fine‐Scale Structure of Fault Zones Activated During the 2014–2024 Unrest at the Campi Flegrei Caldera (Southern Italy) From High‐Precision Earthquake Locations |
| title_full_unstemmed | Delineation and Fine‐Scale Structure of Fault Zones Activated During the 2014–2024 Unrest at the Campi Flegrei Caldera (Southern Italy) From High‐Precision Earthquake Locations |
| title_short | Delineation and Fine‐Scale Structure of Fault Zones Activated During the 2014–2024 Unrest at the Campi Flegrei Caldera (Southern Italy) From High‐Precision Earthquake Locations |
| title_sort | delineation and fine scale structure of fault zones activated during the 2014 2024 unrest at the campi flegrei caldera southern italy from high precision earthquake locations |
| topic | earthquake locations caldera Campi Flegrei imaging active faults |
| url | https://doi.org/10.1029/2023GL107680 |
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