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A Seismic Factor of Radon Danger on a Case Study of Armenia

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Author(s): E. Saghatelyan | A. Saghatelyan | A. Petrosyan | H. Asmaryan

Journal: Iranian Journal of Earth Sciences
ISSN 2008-8779

Volume: 2;
Issue: 2;
Start page: 133;
Date: 2010;
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Keywords: Armenia | Radon danger | Seismic activity | Earthquakes | Cancer

ABSTRACT
For the first time, on the basis of Spitak earthquake experience (Armenia, December 1988), it was found that an earthquake causes intensive and prolonged radon releases that are quickly dispersed in the open air and that is why they are not usually registered but contrastingly displayed in covered premises (such as dwelling houses, schools, kindergartens) even if they are at a considerable distance from the epicenter of the earthquake. The duration of the release includes the period starting from the first foreshock and ending with the last aftershock, i.e. several months. The radiation intensity and duration of the influence are in direct correlation with the intensity of the earthquake. The area affected by radiation is larger than the territory of Armenia. The scale of this impact on the effected population is twelve times higher than the number of people injured in the Spitak earthquake. Data collation from the 2000–2005 time period indicates that a contrasting increase in indoor radon concentrations in Yerevan (several times excessive vs. the sanitary norm) is predetermined not only by strong earthquakes (M ≥ 4.5), but also by the weak (M
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