New Insights on Ground Deformation at Campi Flegrei Caldera Inferred From Kinematics and Dynamics Investigation of Borehole Tilt
Abstract The study of the ground deformation in active calderas provides valuable indications of the ongoing dynamical processes. In this framework, we analyze the borehole tiltmeter data recorded at Campi Flegrei (Southern Italy) from their first installation (1 April 2015), in order to retrieve th...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Geophysical Union (AGU)
2023-03-01
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| Series: | Earth and Space Science |
| Online Access: | https://doi.org/10.1029/2022EA002702 |
| _version_ | 1797857345807581184 |
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| author | M. Falanga I. Aquino E. DeLauro S. Petrosino C. Ricco |
| author_facet | M. Falanga I. Aquino E. DeLauro S. Petrosino C. Ricco |
| author_sort | M. Falanga |
| collection | DOAJ |
| description | Abstract The study of the ground deformation in active calderas provides valuable indications of the ongoing dynamical processes. In this framework, we analyze the borehole tiltmeter data recorded at Campi Flegrei (Southern Italy) from their first installation (1 April 2015), in order to retrieve the kinematics of the ground deformation and its main anomalies. Our approach involves the nonlinear dynamics analysis aimed at the identification of the degrees of freedom of the system and thus its complexity. Starting from the second part of the year 2020, the behavior of the dynamical system becomes collective, and a locally significant deviation of the deformative pattern from the background trend is observed. In particular, a series of 15 slow tilt variations (like jumps lasting a few days) appears in the ground deformation. They are associated with a very low‐dimensional system likely generated by a local second‐order source. The latter is related to fluid migration and it is superimposed on the primary one located in Pozzuoli town and driving the current uplift of Campi Flegrei. The effects of such a local, second‐order stress field are, indeed, evident in the area of the volcanic dome of Mt. Olibano, where they are measured as tilt steps. The superposition of primary and second‐order sources of deformation acting contemporaneously can justify the recent variations in geophysical and geochemical parameters. Our approach based on the joint dynamical and kinematical analyses of the tiltmeter data can be applied to other volcanic/tectonic areas or extended to other geophysical and geochemical variables. |
| first_indexed | 2024-04-09T20:56:18Z |
| format | Article |
| id | doaj.art-4ef0b4d7f20d4e4fb128ffe72c7c647c |
| institution | Directory Open Access Journal |
| issn | 2333-5084 |
| language | English |
| last_indexed | 2024-04-09T20:56:18Z |
| publishDate | 2023-03-01 |
| publisher | American Geophysical Union (AGU) |
| record_format | Article |
| series | Earth and Space Science |
| spelling | doaj.art-4ef0b4d7f20d4e4fb128ffe72c7c647c2023-03-29T19:08:34ZengAmerican Geophysical Union (AGU)Earth and Space Science2333-50842023-03-01103n/an/a10.1029/2022EA002702New Insights on Ground Deformation at Campi Flegrei Caldera Inferred From Kinematics and Dynamics Investigation of Borehole TiltM. Falanga0I. Aquino1E. DeLauro2S. Petrosino3C. Ricco4Dipartimento di Ingegneria dell’Informazione ed Elettrica e Matematica applicata/DIEM Università degli Studi di Salerno Fisciano ItalyIstituto Nazionale di Geofisica e Vulcanologia Sezione di Napoli – Osservatorio Vesuviano Naples ItalyDipartimento di Ingegneria dell’Informazione ed Elettrica e Matematica applicata/DIEM Università degli Studi di Salerno Fisciano ItalyIstituto Nazionale di Geofisica e Vulcanologia Sezione di Napoli – Osservatorio Vesuviano Naples ItalyIstituto Nazionale di Geofisica e Vulcanologia Sezione di Napoli – Osservatorio Vesuviano Naples ItalyAbstract The study of the ground deformation in active calderas provides valuable indications of the ongoing dynamical processes. In this framework, we analyze the borehole tiltmeter data recorded at Campi Flegrei (Southern Italy) from their first installation (1 April 2015), in order to retrieve the kinematics of the ground deformation and its main anomalies. Our approach involves the nonlinear dynamics analysis aimed at the identification of the degrees of freedom of the system and thus its complexity. Starting from the second part of the year 2020, the behavior of the dynamical system becomes collective, and a locally significant deviation of the deformative pattern from the background trend is observed. In particular, a series of 15 slow tilt variations (like jumps lasting a few days) appears in the ground deformation. They are associated with a very low‐dimensional system likely generated by a local second‐order source. The latter is related to fluid migration and it is superimposed on the primary one located in Pozzuoli town and driving the current uplift of Campi Flegrei. The effects of such a local, second‐order stress field are, indeed, evident in the area of the volcanic dome of Mt. Olibano, where they are measured as tilt steps. The superposition of primary and second‐order sources of deformation acting contemporaneously can justify the recent variations in geophysical and geochemical parameters. Our approach based on the joint dynamical and kinematical analyses of the tiltmeter data can be applied to other volcanic/tectonic areas or extended to other geophysical and geochemical variables.https://doi.org/10.1029/2022EA002702 |
| spellingShingle | M. Falanga I. Aquino E. DeLauro S. Petrosino C. Ricco New Insights on Ground Deformation at Campi Flegrei Caldera Inferred From Kinematics and Dynamics Investigation of Borehole Tilt Earth and Space Science |
| title | New Insights on Ground Deformation at Campi Flegrei Caldera Inferred From Kinematics and Dynamics Investigation of Borehole Tilt |
| title_full | New Insights on Ground Deformation at Campi Flegrei Caldera Inferred From Kinematics and Dynamics Investigation of Borehole Tilt |
| title_fullStr | New Insights on Ground Deformation at Campi Flegrei Caldera Inferred From Kinematics and Dynamics Investigation of Borehole Tilt |
| title_full_unstemmed | New Insights on Ground Deformation at Campi Flegrei Caldera Inferred From Kinematics and Dynamics Investigation of Borehole Tilt |
| title_short | New Insights on Ground Deformation at Campi Flegrei Caldera Inferred From Kinematics and Dynamics Investigation of Borehole Tilt |
| title_sort | new insights on ground deformation at campi flegrei caldera inferred from kinematics and dynamics investigation of borehole tilt |
| url | https://doi.org/10.1029/2022EA002702 |
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