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标题：Total natural radioactivity, Veneto (Italy)
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作者：V. Strati ; M. Baldoncini ; G.P. Bezzon 等
期刊名称：Journal of Maps
印刷版ISSN：1744-5647
出版年度：2015
卷号：11
期号：4
页码：545-551
DOI：10.1080/17445647.2014.923348
出版社：Journal of Maps
摘要：We present the first detailed map of the terrestrial natural radioactivity of the Veneto Region (Italy), a 18,264 km 2 densely populated area, previously investigated through indoor radon surveys. The activity concentration in 709 representative samples of the main Alpine lithostratigraphic units was measured by using a high-purity germanium (HPGe) γ-ray spectrometer to characterize the radioactivity content of the 41 cartographic units of the Veneto Lithostratigraphic map at 1:250,000 scale. An area accounting for 61% of the territory, comprising alluvial plains was investigated through airborne γ-ray measurements. The large-volume NaI detectors were mounted on an ultralight aircraft, flying a 7000 km line. The data were interpolated using Ordinary Kriging, and a distribution model of the radioactivity content was produced. The result of the data analysis is a total natural radioactivity map of Veneto at 1:250,000 scale in which the activity concentration of the territory is visualized in seven classes, according to the percentile values calculated on the total dataset of measurements.
关键词：natural radioactivity; airborne gamma ray spectrometry; Veneto; activity concentration; rock radioactivity; geological and soil mapping