Temporal variability of Pu signatures in a Pb-210-dated Sphagnum peat profile from the Northern Ural, Russian Federation
Temporal variability of Pu signatures in a Pb-210-dated Sphagnum peat profile from the Northern Ural, Russian Federation
The peat archives are one of the stratigraphic records revealing clearly physical, chemical and biological signals of human influence on the Earth System since the 1950s, at least. The presented study was aimed mainly to identify the level and origin of anthropogenic radionuclides such as
238, 239, 240Pu in a
210Pb-dated peat profile derived from the Northern Ural, Russian Federation. As stated, the vertical variability of
240Pu/
239Pu isotopic compositions reflects the nuclear weapons testing history with the maximum in the 1960s and small regional impact most likely of high-yielded tests in the 1950s as well as Chinese detonations in the 1970s. Peat accumulations rates were similar to those obtained in adjacent areas, whereas
210Pb flux slightly exceeded the reference level established for adequate latitude belt.
Antropocene, High-yielded nuclear tests, Pb-210 dating, Peat deposit, Plutonium isotopic composition, Ural mountains
Cwanek, A.
07b1c53d-1dd6-4aee-8072-70af29583768
Łokas, E.
029668d2-9da2-4aab-afe1-93df8c2e3943
Mitchell, E.A.D.
33f2099f-f073-4c69-bb14-5b072b54979f
Mazei, Y.
a94d31f7-366e-4109-a998-2b05714e152a
Gaca, P.
3d23473d-db81-436a-a12d-ad707db4abc8
Milton, J.A.
9e183221-d0d4-4ddb-aeba-0fdde9d31230
October 2021
Cwanek, A.
07b1c53d-1dd6-4aee-8072-70af29583768
Łokas, E.
029668d2-9da2-4aab-afe1-93df8c2e3943
Mitchell, E.A.D.
33f2099f-f073-4c69-bb14-5b072b54979f
Mazei, Y.
a94d31f7-366e-4109-a998-2b05714e152a
Gaca, P.
3d23473d-db81-436a-a12d-ad707db4abc8
Milton, J.A.
9e183221-d0d4-4ddb-aeba-0fdde9d31230
Cwanek, A., Łokas, E., Mitchell, E.A.D., Mazei, Y., Gaca, P. and Milton, J.A.
(2021)
Temporal variability of Pu signatures in a Pb-210-dated Sphagnum peat profile from the Northern Ural, Russian Federation.
Chemosphere, 281, [130962].
(doi:10.1016/j.chemosphere.2021.130962).
Abstract
The peat archives are one of the stratigraphic records revealing clearly physical, chemical and biological signals of human influence on the Earth System since the 1950s, at least. The presented study was aimed mainly to identify the level and origin of anthropogenic radionuclides such as
238, 239, 240Pu in a
210Pb-dated peat profile derived from the Northern Ural, Russian Federation. As stated, the vertical variability of
240Pu/
239Pu isotopic compositions reflects the nuclear weapons testing history with the maximum in the 1960s and small regional impact most likely of high-yielded tests in the 1950s as well as Chinese detonations in the 1970s. Peat accumulations rates were similar to those obtained in adjacent areas, whereas
210Pb flux slightly exceeded the reference level established for adequate latitude belt.
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Published date: October 2021
Additional Information:
Funding Information:
The authors are thankful to Olga Smirnova, Alexey Aleynikov, Alexey Efimenko, Alexandr Laznikov, Pavel Dmitrovich and Natalie Lemonis for their help during the fieldwork. The Pu analysis was founded by the Institute of Nuclear Physics, Polish Academy of Sciences from statutory research resources.
Publisher Copyright:
© 2021 The Author(s)
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
Keywords:
Antropocene, High-yielded nuclear tests, Pb-210 dating, Peat deposit, Plutonium isotopic composition, Ural mountains
Identifiers
Local EPrints ID: 454124
URI: http://eprints.soton.ac.uk/id/eprint/454124
ISSN: 0045-6535
PURE UUID: b5e3a964-04cf-445d-8828-1d85e86f4ae3
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Date deposited: 31 Jan 2022 17:51
Last modified: 06 Jun 2024 01:35
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Author:
A. Cwanek
Author:
E. Łokas
Author:
E.A.D. Mitchell
Author:
Y. Mazei
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