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Giovani Concettina, Arpa Friuli Venezia Giulia (Italy)
Franco Cucchi, University of Trieste (Italy)
Massimo Garavaglia, Arpa Friuli Venezia Giulia (Italy)
Barbara Nadalut, Arpa Friuli Venezia Giulia (Italy)
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A distribution map of indoor radon concentration in Friuli Venezia Giulia region (NE Italy) was drawn on the basis of over than 5000 annual measurements of radon concentration performed in 2500 buildings homogeneously distributed on the territory of the region. Correlations among main geological, geostructural, geomorphological and hydrogeological parameters and indoor radon concentrations were analyzed by the means of the most recent regional geological and seismical knowledges. In this paper the authors present the results of that kind of analysis. Particularly lithology and age of bedrock, texture and petrography of shallow deposits, tectonic lineaments, seismicity, water detention capacity, permeability of aquifers and deepness of water table, were taken into account. The influence of particular phenomena like karst features and karstic waters on radon indoor concentration were also considered.
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