Distribution of natural radionuclides in the soils on the territory of the New Moscow

The paper is devoted to the question of natural radionuclides (40K, 238U, 232Th) distribution in the soils on the territory of New Moscow. Based on the processing of the results of aero-gamma-spectrometry and analysis of extensive cartographic material (geological, soil, neotectonic maps, satellite data SRTM), the distribution of these radionuclides within the area under consideration has been estimated. The areas with elevated values of radionuclides relative to regional background values characteristic for the territory of the European part of Russia have been identified. These areas are considered as potentially dangerous for the environment and human health. Using GIS-technology has allowed determining probable anthropogenic and natural causes of the obtained distribution. Elevated contents of radionuclide 40K (up to 2,3%) coincide with the location of agricultural land and farms and, most likely, are associated with excessive mineral fertilization. The maximum contents of the radionuclide 238U (up to 2•10-4%) are localized at the intersection of the neotectonic fault and river valleys. High concentrations of radionuclide 232Th (up to 11,9•10-4%) are concentrated at the sites of development of large cracks and neotectonic fault, determined by authors as a result of relief digital model designing, and most likely, are due to natural causes (the composition of the initial rocks – substrate).

New Moscow, geoecological mapping, geoecological assessment, GIS technology, aero-gamma-spectrometry, radionuclides, potassium-40, uranium-238, thorium-232

1. Aleksandrov Ju.A. Basics of radiation ecology. Joshkar-Ola, Mar. gos. un-t Publ., 2007, 268 p. (In Russian)

2. Betenekov N.D. Radioecological monitoring. Ekaterinburg, Izdvo Ural. un-ta, 2014, 208 p. (In Russian)

3. Guseva A.S., Ustinov S.A., Petrov V.A., Ignatov P.A. Geoecological assessment of hazardous geological processes within the territory of New Moscow using GIS technologies. Geoinformatika, 2017, no 2, pp. 21–29 (In Russian)

4. Guseva A.S., Ustinov S.A., Petrov V.A. Spatial regularities of localization of radionuclides in the territory of New Moscow and their relationship with neotectonic structures. Questions of natural science, no. 3 (17), pp. 40–46 (In Russian)

5. Guseva A.S., Ustinov S.A., Petrov V.A. Assessment of the geoecological state of the territory of New Moscow based on the analysis of the distribution of radioactive elements according to aerogamma-spectrometric data. New in the knowledge of ore formation processes [Seventh Russian Youth Scientific and Practical School, Moscow, November 13–17, 2017], Moscow, 2017, pp. 95–99 (In Russian)

6. Guseva A.S., Ustinov S.A., Petrov V.A. Iden-tification of neotectonic structures of New Moscow in the context of geoecological studies. Lithosphere structure and geodynamics [Materials of the XXVIII All-Russian Youth Conference (Irkutsk, April 8–14, 2019)]. Irkutsk, 2019, pp. 55–56 (In Russian)

7. Dmitriev A., Bessonov N. Moscow Climate. Fea-tures of the climate of the big city. Leningrad: Gidrometeoizdat, 1969. 315 p. (In Russian)

8. Markelov D.A. Radioecological status of territories (assessment, diagnostics, forecasting): monograph. M., Jenergija, 2008, 146 p. (In Russian)

9. On the state of the environment of the Moscow region in 2012. State report. Ed. N.V. Garan’kina, N.G. Rybal’skogo, V.V. Snakina. M., NIA-Priroda, 2003. 314 p.

10. The radiation situation in Russia and neighboring countries in 2015. Yearbook. Ed. M.N. Katkova. Obninsk, 2016, 348 p. 11. Titaeva N.A. Nuclear geochemistry. M., MGU Publ., 2000, 336 p. (In Russian)

11. Research and Production Enterprise «Airborne Geophysics», 2006–2019. Available from: www: aerogeo.ru/ (last accessed 01.08.2019)

12. Atomic energy 2.0, 2008—2019. Available from: www: atomicenergy.ru/ (last accessed 15.08.2019)