Environmental influences on soil CO2 degassing at Furnas and Fogo volcanoes (São Miguel Island, Azores archipelago)

Viveiros, Fátima; Ferreira, Teresa; Vieira, José António Cabral; Silva, Catarina; Gaspar, J. L.

doi:10.1016/j.jvolgeores.2008.07.005

Cited by 80 publications

(108 citation statements)

References 34 publications

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“…Al., 2007). Su and Huh (2002) 3 Diffuse and concentrated degassing in volcanic areas may release high amount of gas and its monitoring can be helpful in volcano surveillance (e.g., Allard et al, 1991;Viveiros et al, 2008). In recent years this approach has been undertaken at several volcanoes (Varley et al, 2001;Carapezza et al, 2004;Williams-Jones et al, 2000;Hernandez et al, 2004;Neri et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Developments in real-time radon monitoring at Stromboli volcano

Laiolo

Cigolini

Coppola

et al. 2012

Journal of Environmental Radioactivity

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We present the results of one year of continuous radon monitoring at Stromboli volcano collected at two automated real-time stations. These were deployed on the NE flank (at 520 m a.s.l.) and within the summit area (900 m a.s.l. an increases in radon concentrations were observed during periods of higher rainfall conditions. Therefore, trends in radon concentrations may be decoupled from those of other geochemical parameters (CO 2 fluxes and CO 2 /SO 2 plume ratios) during periods of heavy to moderate rainfalls.Multiple Linear Regression statistics (including the effects of soil temperature, atmospheric pressure and tidal forces) led us to compute the residuals given by the difference of measured and calculated 222 Rn concentrations. The cross-check between the daily measured radon activities and the absolute variations in radon residuals, for the data collected at the summit station, give us the opportunity to suggest a methodological approach that can be used in the attempt of predicting some major changes in volcanic activity.

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Section: Introductionmentioning

confidence: 99%

Developments in real-time radon monitoring at Stromboli volcano

Laiolo

Cigolini

Coppola

et al. 2012

Journal of Environmental Radioactivity

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“…On account of this complex tectonic setting, seismic and volcanic activities are frequent in the archipelago (Searle, 1980;Viveiros et al, 2008). Within the island of São Miguel (Azores, Portugal) there are villages located at volcanically active environments, like Furnas, and others without historical records for active volcanism, like Stº António.…”

Section: Study Populationmentioning

confidence: 99%

“…The group exposed to the volcanically active environment consisted of 120 inhabitants (90 women and 30 men) from Furnas village (Table 1). This village is located inside the Furnas volcano caldera, where present-day volcanic activity is marked by several hydrothermal manifestations consisting of active fumarolic fields and hydrothermal vents (Booth et al, 1978;Cruz, 2003) and soil diffuse degassing areas with the always present "rotten egg" odor (Viveiros et al, 2008(Viveiros et al, , 2009 , alcohol consumption, frequent use of mouthwash, performance of X-rays in the previous week, and general health status. Only individuals that resided for more than five years in each locality were considered for this study.…”

Section: Study Populationmentioning

confidence: 99%

“…Despite all the hazards associated with the activity of volcanoes, the richness of the soils in nutrients increasingly attracts people to live on or in the vicinity of active volcanoes, as it happens, in the Azores and Hawaii archipelagos, oceanic islands of hotspot volcanism (Amaral and Rodrigues, 2011;Hansell et al, 2006). Present-day volcanic activity in the Azores archipelago is marked by several hydrothermal manifestations consisting of active fumarolic fields, thermal and cold CO 2 springs and soil diffuse degassing areas (Baxter et al, 1999;Viveiros et al, 2008Viveiros et al, , 2009). According to these authors one of the major soil diffuse degassing areas of the archipelago extends below Furnas village.…”

Section: Introductionmentioning

confidence: 99%

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Evidence of DNA damage in humans inhabiting a volcanically active environment: A useful tool for biomonitoring

Rodrigues¹,

Arruda

Garcia

2012

Environment International

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. The present study was designed to evaluate whether chronic exposure to a volcanically active environment might result in genotoxic and cytotoxic effects in human oral epithelial cells. A study group of 120 individuals inhabiting a volcanically active environment (exposed group; Furnas village) and a reference group of 122 individuals inhabiting a village without manifestations of volcanic activity (Santo António village) were examined in this study. Individuals from Furnas village inhabit a volcanically active environment marked by several degassing manifestations, including fumarolic fields, thermal and cold CO 2 springs and soil diffuse degassing areas. For each individual, 1000 buccal epithelial cells were analyzed for the frequency of micronucleated cells (MNC) and the frequency of cells with other nuclear anomalies (ONA: pyknosis, karyolysis and karyorrhexis), by using the micronucleus assay. Information on life-style factors and an informed consent were obtained from each participant. The frequencies of MNC and of ONA per 1000 cells in the exposed group (4.3‰ and 23.5‰, respectively) were significantly higher than in the reference group (1.7‰ and 7.7‰, respectively). The risk of having a high frequency of MNC or ONA was 2.4 and 3.1-fold higher in exposed individuals compared to reference group. The analyzed confounding factors (age, gender, smoking status, alcohol consumption, and mouthwash use) did not show any significant association with the frequency of MNC or ONA. The higher risk of DNA damage in individuals inhabiting a volcanically active environment is for the first time clearly highlighted with this biomonitoring study. Given that MNC in oral epithelia are recognized as a predictive biomarker of cancer risk within a population of healthy subjects, these findings could contribute to explain the high incidence rates of lip, oral cavity and pharynx cancers previously referred for Furnas village inhabitants.

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“…Recent automatic measurements have shown that environmental parameters are critical in modulating radon emissions (e.g., Pinault and Baurbon, 1996;Zimmer and Erzinger, 2003;Pérez et al, 2007;Cigolini et al, 2009;Laiolo et al, 2012) and CO 2 degassing (Viveiros et al, 2008;Carapezza et al, 2009;Rinaldi et al, 2012). In this paper we will report additional data collected during 2002-2007 at Stromboli volcano.…”

Section: Introductionmentioning

confidence: 99%