TY - JOUR

T1 - 7Be, 210Pb and 137Cs in atmospheric deposition of southern and arctic regions of western siberia

AU - Mezina, Kseniya

AU - Melgunov, Mikhail

AU - Belyanin, Dmitriy

N1 - Funding Information: Acknowledgements: Thiswork (sampling in Arctic region, analytical work, interpretation of results) are supported by the RSF grant № 18-77-10039. Analytical studies are carried out at Center for multi-elemental and isotope research SB RAS. The development of a sample preparation technique and sampling in southern region of Western Siberia are done on state assignment of IGM SB RAS with financial support Ministry of Science and Higher EducationoftheRussianFederation. Publisher Copyright: © 2020 RAD Conference Proceedings.

PY - 2020

Y1 - 2020

N2 - Radioactive isotopes such as 7Be, 210Pb and 137Cs are used as indicators of processes associated with the transfer of matter from the atmosphere. There are no widely known data on studies of the joint seasonal atmospheric flux of 7Be and 210Pbatm, based on the study of integrated snow samples accumulated in winter periods in territory of Western Siberia. Study of snow cover can provide information on the total flux of 7Be and 210Pb to the Earth's surface over the entire period of snow accumulation without separation of the dry or wet components. The purpose of this study is to conduct a comparative analysis of 7Be, 210Pb and 137Cs deposition as a part of the atmospheric precipitation in the Arctic and south regions of Western Siberia in winter period. As a result of the research, data on the joint deposition of 7Be, 210Pb and 137Cs in integral snow samples, including atmospheric precipitation, dust, and aerosols, in the Arctic (for 7 months) and southern (for 5 months) regions of Western Siberia were firstly obtained. A comparative analysis of the data shows that, despite the difference in geographic location, the concentration of 7Be in the snow water of the Arctic (248.0 mBq L-1) and south (265.4 mBq L-1) regions is almost equal. At the same time, the specific activity of 210Pb in the suspended matter of snow waters sampled in the southern region is 1.6 times higher, which may indicate a much higher level of dust material intake in winter.

AB - Radioactive isotopes such as 7Be, 210Pb and 137Cs are used as indicators of processes associated with the transfer of matter from the atmosphere. There are no widely known data on studies of the joint seasonal atmospheric flux of 7Be and 210Pbatm, based on the study of integrated snow samples accumulated in winter periods in territory of Western Siberia. Study of snow cover can provide information on the total flux of 7Be and 210Pb to the Earth's surface over the entire period of snow accumulation without separation of the dry or wet components. The purpose of this study is to conduct a comparative analysis of 7Be, 210Pb and 137Cs deposition as a part of the atmospheric precipitation in the Arctic and south regions of Western Siberia in winter period. As a result of the research, data on the joint deposition of 7Be, 210Pb and 137Cs in integral snow samples, including atmospheric precipitation, dust, and aerosols, in the Arctic (for 7 months) and southern (for 5 months) regions of Western Siberia were firstly obtained. A comparative analysis of the data shows that, despite the difference in geographic location, the concentration of 7Be in the snow water of the Arctic (248.0 mBq L-1) and south (265.4 mBq L-1) regions is almost equal. At the same time, the specific activity of 210Pb in the suspended matter of snow waters sampled in the southern region is 1.6 times higher, which may indicate a much higher level of dust material intake in winter.

KW - Pb

KW - 137Cs

KW - 7Be

KW - Arctic region

KW - Atmospheric precipitation

KW - Snow

KW - Western Siberia

UR - http://www.scopus.com/inward/record.url?scp=85106689191&partnerID=8YFLogxK

U2 - 10.21175/RadProc.2020.33

DO - 10.21175/RadProc.2020.33

M3 - Conference article

AN - SCOPUS:85106689191

VL - 4

SP - 161

EP - 166

JO - RAD Conference Proceedings

JF - RAD Conference Proceedings

SN - 2466-4626

T2 - 8th International Conference on Radiation in Various Fields of Research, RAD 2020

Y2 - 20 July 2020 through 24 July 2020

ER -