Variations in radon activity in the crustal fault zones: Spatial characteristics

Seminsky, K. Zh.; Бобров, А. А.; Дэмбэрэл, С.

doi:10.1134/s1069351314060081

Cited by 21 publications

(17 citation statements)

References 40 publications

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“…Tectonic disturbances are expressed in the form of linear anomalies of a high soil gas radon concentration. In addition, they differ in violations of different ages and types [ 16 , 17 , 18 ]. Dynamically-active fault lines exhibit a higher radon emission.…”

Section: Introductionmentioning

confidence: 99%

The Assessment of Radon Emissions as Results of the Soil Technogenic Disturbance

Leshukov

Ларионов

Legoshchin

et al. 2020

IJERPH

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222Rn is a specific indoor-type pollutant that represents a primary radiological hazard as a main source of ionizing radiation (IR) for humans. Coal mining creates new sources of gas that are formed over mines. This process can significantly increase the density of radon flux. Therefore, the concentration of radon in a room can increase. We investigated the territory of the Leninsk-Kuznetsky district of the Kemerovo region, which is subject to underground mining. Two groups of residential locations and measuring points of radon flux density were selected to identify the higher emanation relationship of radon and mining-affected areas. The first group (Case group) included subjects located within the territory of the underground mine; the other (Control group) included subjects in an area without mining. Radon flux density in coal mining areas was significantly higher than in the rest of the territory; moreover, the percentage of values in the Case group that had a radon flux density above 80 mBq·m−2·s−1 was 64.53%. For the Case group, 20.62% of residential buildings had a radon concentration above 200 Bq/m3. For the studied area, the radon flux density correlates positively (r = 0.79, p = 0.002) with indoor radon. Additional clastogenic/aneugenic effects are also found in dwellings with increased volume activity of radon (VAR) within the territories of underground mines. Ring chromosomes are positively correlated with radon levels in smoker groups but not in non-smokers. An increased frequency of binucleated (BN) cells with micronuclei (MN) is also positively correlated with VAR regardless of smoking status. It has been concluded that reducing the total exposure level of a population to radon can be achieved by monitoring areas with underground mines where radon is emitted heavily.

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Section: Introductionmentioning

confidence: 99%

The Assessment of Radon Emissions as Results of the Soil Technogenic Disturbance

Leshukov

Ларионов

Legoshchin

et al. 2020

IJERPH

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“…Based on the above considerations, we can confirm that the study area shows different pattern of 222 Rn, CO 2 and 220 Rn spatial distribution of the gas anomalies at the surface, primarily related to the extension of the fracture zone and the length of the dislocation, and secondarily to local geological factors. These parameters mainly govern the pattern and the magnitude of the observed fault-linked Rn anomalies, thus suggesting a different geochemical activity (i.e., the gas-bearing property) of the fault segments that makes up the PF system 10 , 11 .…”

Section: Discussionmentioning

confidence: 99%

“…Fault-related anisotropy affects radon distribution at the surface, and provides a clear correlation between the shape and orientation of radon anomalies and the geometry of the recognised damage zones in the area. Seminsky et al 11 studied the variations of radon activity in the crustal fault zone of the Baikal-Mongolian seismic belt and revealed that the radon anomalies occurring along the investigated profiles crossing the Khustai fault are five times higher than the background value (3.9 kBq·m −3 ). Wang et al 16 found radon concentrations in soil gas eight times higher than the background value (4.7 kBq·m −3 ) along the active Tangshan fault (Northern China).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of tectonically enhanced radon in fault zones by quantification of the radon activity index

Benà

Ciotoli

Ruggiero

et al. 2022

Sci Rep

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This work highlights the importance of the Geogenic Radon Potential (GRP) component originated by degassing processes in fault zones. This Tectonically Enhanced Radon (TER) can increase radon concentration in soil gas and the inflow of radon in the buildings (Indoor Radon Concentrations, IRC). Although tectonically related radon enhancement is known in areas characterised by active faults, few studies have investigated radon migration processes in non-active fault zones. The Pusteria Valley (Bolzano, north-eastern Italy) represents an ideal geological setting to study the role of a non-seismic fault system in enhancing the geogenic radon. Here, most of the municipalities are characterised by high IRC. We performed soil gas surveys in three of these municipalities located along a wide section of the non-seismic Pusteria fault system characterised by a dense network of faults and fractures. Results highlight the presence of high Rn concentrations (up to 800 kBq·m−3) with anisotropic spatial patterns oriented along the main strike of the fault system. We calculated a Radon Activity Index (RAI) along north–south profiles across the Pusteria fault system and found that TER is linked to high fault geochemical activities. This evidence confirms that TER constitutes a significant component of GRP also along non-seismic faults.

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“…Взяв во внимание данные ранее проведенных исследований о радоноопасности грунтов и жилых строений, расположенных в зоне подземной выработки, [11; 12] можно утверждать, что данный фактор определяет высокий уровень радиационной нагрузки на население в городе. С учетом слабой радиоактивности горных пород описанных ранее свит и данных, приведенных в исследованиях других авторов [15] П р и м е ч а н и е . *P 2 km -казанково-маркинская свита; P 2 us -ускатская свита; P 2 ln -ленинская свита; j 1 os -осиновская свита.…”

Section: результаты исследования и их обсуждениеunclassified

Radon Hazard of the Geological Environment in Coal Mining Regions: A Spatial Study Using Geographic Information Systems

Leshukov¹,

Legoshchin²,

Ларионов³

et al. 2020

УСЕ (ACNR)

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Variations in radon activity in the crustal fault zones: Spatial characteristics

Cited by 21 publications

References 40 publications

The Assessment of Radon Emissions as Results of the Soil Technogenic Disturbance

The Assessment of Radon Emissions as Results of the Soil Technogenic Disturbance

Evaluation of tectonically enhanced radon in fault zones by quantification of the radon activity index

Radon Hazard of the Geological Environment in Coal Mining Regions: A Spatial Study Using Geographic Information Systems

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