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

被引：24

作者：

Bena, Eleonora ^{[1
]}

Ciotoli, Giancarlo ^{[2
,3
]}

Ruggiero, Livio ^{[3
]}

Coletti, Chiara ^{[1
]}

Bossew, Peter ^{[4
]}

Massironi, Matteo ^{[1
]}

Mazzoli, Claudio ^{[1
]}

Mair, Volkmar ^{[5
]}

Morelli, Corrado ^{[5
]}

Galgaro, Antonio ^{[1
]}

Morozzi, Pietro ^{[6
]}

Tositti, Laura ^{[6
]}

Sassi, Raffaele ^{[1
]}

机构：

[1] Univ Padua, Dipartimento Geosci, Via Gradenigo 6, I-35131 Padua, Italy

[2] CNR, IGAG, I-00015 Rome, Italy

[3] INGV, Via Vigna Murata 605, I-00143 Rome, Italy

[4] Fed Off Radiat Protect BfS, Sect Radon & NORM, Kopenicker Allee 120-130, D-10318 Berlin, Germany

[5] Prov Autonoma Bolzano Ufficio Geol & Prove Mat, Cardano Kardaun, Italy

[6] Univ Bologna, Dipartimento Chim G Ciamician, Via Selmi 2, I-40126 Bologna, Italy

来源：

SCIENTIFIC REPORTS | 2022年 / 12卷 / 01期

关键词：

SOIL-GAS; SYSTEM; HAZARD; AREA; EXAMPLE; TERM;

D O I：

10.1038/s41598-022-26124-y

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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 center dot 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.

引用

页数：13

共 53 条

[51]

Zeeb H, 2009, WHO HANDBOOK ON INDOOR RADON: A PUBLIC HEALTH PERSPECTIVE, P1

[52]

Zhou Xiao-cheng, 2007, Huanjing Kexue, V28, P659

[53]

[周晓成 Zhou Xiaocheng], 2011, [地震地质, Seismology and Geology], V33, P123

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