Soil-gas radon anomalies in three study areas of Central-Northern Calabria (Southern Italy)

Iovine, Giulio; Guagliardi, Ilaria; Bruno, C.; Greco, Roberto; Tallarico, A.; Falcone, G.; Lucà, Federica; Buttafuoco, Gabriele

doi:10.1007/s11069-017-2839-x

Cited by 16 publications

(13 citation statements)

References 55 publications

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“…The most abundant naturally occurring radon isotope is 222 Rn (half-life of 3.82 days) and, also from the human health protection point of view the most relevant together with its short-lived alpha emitting progeny. In fact, regarding its relevance as hazard for humans, this radionuclides easily bind to the aerosol present in the indoor air, and, once inhaled, deposit on the bronchial tree, where emitting alpha ionizing radiation turns to be harmful for basal cells of the bronchial epithelium, critical targets for any cancerous changes (Ismail and Jaafar, 2011).…”

Section: Introductionmentioning

confidence: 99%

A geogenic approach for the Radon monitoring and the exposure assessment at a regional scale: The results of the Rad_Campania project

et al. 2020

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Abstract. The aim of this paper is to analyse and discuss the results of the regional program Rad Campania for the monitoring and the assessment of the radon risk. An innovative methodology, based on a geogenic approach, was developed, supported by a comprehensive campaign of radon measurement performed in soil gas, natural waters, drinking natural water samples and indoor air. Data refer to field measurements carried out in three provinces of the Campania Region (Italy): Salerno, Avellino and Benevento. The programme was completed with the main purpose to investigate the peculiarities of the radon issue at a provincial scale and to redact a map of the radon potential from soil as a tool for authorities to recognise critical areas (“Radon prone areas”) to monitor. Since the experience demonstrates that the high radon potential from soil is not indicative of high indoor radon concentrations, in this paper the authors have tried to identify a possible general correlation between geological features of the soil and structural characteristics of the buildings, elaborating more in depth all data collected. The main purpose is to categorize and analyse the performance of different kind of construction, typical of the local area, in order to develop, in a future work, an indicator of the building performances as a useful tool, for authorities, to recognise constructions potentially more exposed to high indoor radon activity concentrations. Results and perspectives have been discussed.

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Section: Introductionmentioning

confidence: 99%

A geogenic approach for the Radon monitoring and the exposure assessment at a regional scale: The results of the Rad_Campania project

et al. 2020

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“…Evidence also shows that soil gas escaping through the fault and fractures in the active fault zones can be enhanced by fault and earthquake activity (Fu et al, 2008;Sciarra et al, 2017;Yuce et al, 2017). As such, analyzing the geochemical variations of soil gas near fault zones has become an important method for investigating earthquake precursors, forecasting earthquakes, and evaluating fault activity (Li et al, 2013;Iovine et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Rn has been used by the scientific community as a tracer of natural phenomena related to outgassing from soil located along faults, fractures, and crustal discontinuities (King et al, 1996;Mazur et al, 1999). Rn concentration changes in soil gas and groundwater are commonly observed prior to earthquakes and volcanic eruptions; consequently, they have attracted considerable attention in studies of precursory geochemical signals (Morawska and Phillips, 1993;King et al, 1995;Giammanco et al, 2009;Walia et al, 2009;Iovine et al, 2017). Hg, H 2 , He, CO 2 , and CH 4 have also been utilized in revealing the relationship among fluid activities in fault zones (Ware et al, 1984;Sugisaki et al, 1996;Jones et al, 2010;Moore and Castro, 2012).…”

Section: Introductionmentioning

confidence: 99%

Spatial Distribution of Rn, CO2, Hg, and H2 Concentrations in Soil Gas Across a Thrust Fault in Xinjiang, China

et al. 2020

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Spatial distribution characteristics and origin of soil gasses were discussed in this study. We also examine the correlation between the spatial variation of soil gasses and fault activity, based on the measurements of Rn, Hg, H 2 , and CO 2 concentrations in the eastern segment of the BLT fault zone in the southern Tianshan Mountains, Xinjiang, China. The results show that the Rn and CO 2 concentrations on the hanging wall were higher than those near the fault zone and on the footwall of the fault. Moreover, the Hg and H 2 concentrations on the footwall were also higher than those near the fault and on the hanging wall of the fault. The main factors affecting the variations in soil gas spatial distribution were gaseous origin structure of the crust, fault activity, fault fracture degree, stratigraphic lithology, and the cover layer. The results of active structural fault mapping show that the BLT fault has been active since the Late Quaternary and the thrust has broken the fault surface. Under the influence of tectonic compressive stress, the tension zone was formed on the hanging wall of the fault and fractures were developed. This result is consistent with the characteristics of soil gas concentrations measured in this study, indicating that the concentrations of Rn, Hg, H 2 , and CO 2 are closely related to the fault activity. These findings can be applied to identify seismic precursors from gas monitoring data of the studied area.

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“…Kim et al studied prediction earthquake occurrence by detecting radon radioactivity change [9]. Iovine et al have analyzed the 3 areas where the earthquake occurred and radon concentrations through continuous long-term monitoring [10].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Changes in Indoor Radon Concentrations Before and After Seismic Activities in Gyeongju and Pohang, Korea

Joo¹

2019

GEOMATE

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This paper made a continuous measurement of the indoor radon concentrations at a university building in Gyeongju, Rep. of Korea, to check if there is any notable pattern between the indoor radon concentrations and seismic activities. On September 12, 2016, earthquakes with a magnitude of 5.1 and 5.8 consecutively occurred in Gyeongju. 14 months later, an earthquake with a magnitude of 5.5 occurred in Pohang, about 30 km away from Gyeongju, on November 15, 2017. This study investigated the change in the indoor radon concentrations before and after earthquakes to identify if there is any pattern between them and found an interesting pattern. Prior to earthquakes, radon anomalies, which are radon concentration deviating by more than ±2σ from the seasonal average, was usually identified. When 5.0 or greater magnitude earthquakes occurred, the indoor radon concentrations decreased sharply a few days before them, and then continuously increased until the occurrence of the earthquake.

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Soil-gas radon anomalies in three study areas of Central-Northern Calabria (Southern Italy)

Cited by 16 publications

References 55 publications

A geogenic approach for the Radon monitoring and the exposure assessment at a regional scale: The results of the Rad_Campania project

A geogenic approach for the Radon monitoring and the exposure assessment at a regional scale: The results of the Rad_Campania project

Spatial Distribution of Rn, CO2, Hg, and H2 Concentrations in Soil Gas Across a Thrust Fault in Xinjiang, China

Investigation of Changes in Indoor Radon Concentrations Before and After Seismic Activities in Gyeongju and Pohang, Korea

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