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Total natural radioactivity, Veneto (Italy)

By V. Strati, M. Baldoncini, G.P. Bezzon, C. Broggini, G.P. Buso, A. Caciolli, I. Callegari, L. Carmignani, T. Colonna, G. Fiorentini, E. Guastaldi, M. Kaçeli Xhixha, F. Mantovani, R. Menegazzo, L. Mou, C. Rossi Alvarez, G. Xhixha and A. Zanon

Abstract

We present the first detailed map of the terrestrial natural radioactivity of the Veneto Region\ud (Italy), a 18,264 km2 densely populated area, previously investigated through indoor radon\ud surveys. The activity concentration in 709 representative samples of the main Alpine\ud lithostratigraphic units was measured by using a high-purity germanium (HPGe) g-ray\ud spectrometer to characterize the radioactivity content of the 41 cartographic units of the\ud Veneto Lithostratigraphic map at 1:250,000 scale. An area accounting for 61% of the\ud territory, comprising alluvial plains was investigated through airborne g-ray measurements.\ud The large-volume NaI detectors were mounted on an ultralight aircraft, flying a 7000 km\ud line. The data were interpolated using Ordinary Kriging, and a distribution model of the\ud radioactivity content was produced. The result of the data analysis is a total natural\ud radioactivity map of Veneto at 1:250,000 scale in which the activity concentration of the\ud territory is visualized in seven classes, according to the percentile values calculated on the\ud total dataset of measurements

Topics: natural radioactivity, airborne gamma ray spectrometry, Veneto, activity concentration, rock radioactivity
Year: 2015
DOI identifier: 10.1080/17445647.2014.923348
OAI identifier: oai:iris.unife.it:11392/2283056
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