Continuous radon monitoring during seven years of volcanic unrest at Campi Flegrei caldera (Italy)

Abstract This is a seven-year study (1/7/2011-31/12/2017) of radon monitoring at two sites of Campi Flegrei caldera (Neaples, Southern Italy) that in the last 70 years experienced repeated phases of volcanic unrest. The sites are equipped with devices for radon detection, based on the spectrometry a...

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Autores principales:	C. Sabbarese, F. Ambrosino, G. Chiodini, F. Giudicepietro, G. Macedonio, S. Caliro, W. De Cesare, F. Bianco, M. Pugliese, V. Roca
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4674146a427749949fd97e40970a3b77
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spelling	oai:doaj.org-article:4674146a427749949fd97e40970a3b772021-12-02T17:52:42ZContinuous radon monitoring during seven years of volcanic unrest at Campi Flegrei caldera (Italy)10.1038/s41598-020-66590-w2045-2322https://doaj.org/article/4674146a427749949fd97e40970a3b772020-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-66590-whttps://doaj.org/toc/2045-2322Abstract This is a seven-year study (1/7/2011-31/12/2017) of radon monitoring at two sites of Campi Flegrei caldera (Neaples, Southern Italy) that in the last 70 years experienced repeated phases of volcanic unrest. The sites are equipped with devices for radon detection, based on the spectrometry analysis of the α-particles of radon daughters. A hybrid method, as combination of three known methods, is applied for the identification of residuals (anomalies) and trends of the time series of Radon. The results are compared with the following indicators of current caldera unrest: the tremor caused by the major fumarolic vent registered by a seismic station; the cumulative of background seismicity; the maximum vertical deformation acquired by GPS networks during the current phase of uplift; the temperature-pressure of the hydrothermal system estimated based on gas geo-indicators. The comparisons show strong correlation among independent signals and suggest that the extension of the area affected by current Campi Flegrei crisis is larger than the area of seismicity and of intense hydrothermal activity from which the radon stations are 1–4 km away. These results represent an absolute novelty in the study of a such calderic area and mark a significant step forward in the use and interpretation of the radon signal.C. SabbareseF. AmbrosinoG. ChiodiniF. GiudicepietroG. MacedonioS. CaliroW. De CesareF. BiancoM. PuglieseV. RocaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-10 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q C. Sabbarese F. Ambrosino G. Chiodini F. Giudicepietro G. Macedonio S. Caliro W. De Cesare F. Bianco M. Pugliese V. Roca Continuous radon monitoring during seven years of volcanic unrest at Campi Flegrei caldera (Italy)
description	Abstract This is a seven-year study (1/7/2011-31/12/2017) of radon monitoring at two sites of Campi Flegrei caldera (Neaples, Southern Italy) that in the last 70 years experienced repeated phases of volcanic unrest. The sites are equipped with devices for radon detection, based on the spectrometry analysis of the α-particles of radon daughters. A hybrid method, as combination of three known methods, is applied for the identification of residuals (anomalies) and trends of the time series of Radon. The results are compared with the following indicators of current caldera unrest: the tremor caused by the major fumarolic vent registered by a seismic station; the cumulative of background seismicity; the maximum vertical deformation acquired by GPS networks during the current phase of uplift; the temperature-pressure of the hydrothermal system estimated based on gas geo-indicators. The comparisons show strong correlation among independent signals and suggest that the extension of the area affected by current Campi Flegrei crisis is larger than the area of seismicity and of intense hydrothermal activity from which the radon stations are 1–4 km away. These results represent an absolute novelty in the study of a such calderic area and mark a significant step forward in the use and interpretation of the radon signal.
format	article
author	C. Sabbarese F. Ambrosino G. Chiodini F. Giudicepietro G. Macedonio S. Caliro W. De Cesare F. Bianco M. Pugliese V. Roca
author_facet	C. Sabbarese F. Ambrosino G. Chiodini F. Giudicepietro G. Macedonio S. Caliro W. De Cesare F. Bianco M. Pugliese V. Roca
author_sort	C. Sabbarese
title	Continuous radon monitoring during seven years of volcanic unrest at Campi Flegrei caldera (Italy)
title_short	Continuous radon monitoring during seven years of volcanic unrest at Campi Flegrei caldera (Italy)
title_full	Continuous radon monitoring during seven years of volcanic unrest at Campi Flegrei caldera (Italy)
title_fullStr	Continuous radon monitoring during seven years of volcanic unrest at Campi Flegrei caldera (Italy)
title_full_unstemmed	Continuous radon monitoring during seven years of volcanic unrest at Campi Flegrei caldera (Italy)
title_sort	continuous radon monitoring during seven years of volcanic unrest at campi flegrei caldera (italy)
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/4674146a427749949fd97e40970a3b77
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Continuous radon monitoring during seven years of volcanic unrest at Campi Flegrei caldera (Italy)

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