Recent increase in Antarctic Peninsula ice core uranium concentrations
Understanding the distribution of airborne uranium is important because it can result in both chemical and radiological toxicity. Ice cores offer the most robust reconstruction of past atmospheric levels of toxic substances. Here we present the first sub-annually dated, continuously sampled ice core...
Published in: | Atmospheric Environment |
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Online Access: | https://researchers.mq.edu.au/en/publications/f85a9b2b-f3ba-4fec-8ab1-34f85a4ea7f3 https://doi.org/10.1016/j.atmosenv.2016.06.010 https://research-management.mq.edu.au/ws/files/62372244/Publisher%20version%20(open%20access).pdf http://www.scopus.com/inward/record.url?scp=84974623798&partnerID=8YFLogxK |
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/f85a9b2b-f3ba-4fec-8ab1-34f85a4ea7f3 2024-09-09T19:08:26+00:00 Recent increase in Antarctic Peninsula ice core uranium concentrations Potocki, Mariusz Mayewski, Paul A. Kurbatov, Andrei V. Simões, Jefferson C. Dixon, Daniel A. Goodwin, Ian Carleton, Andrew M. Handley, Michael J. Jaña, Ricardo Korotkikh, Elena V. 2016-09-01 application/pdf https://researchers.mq.edu.au/en/publications/f85a9b2b-f3ba-4fec-8ab1-34f85a4ea7f3 https://doi.org/10.1016/j.atmosenv.2016.06.010 https://research-management.mq.edu.au/ws/files/62372244/Publisher%20version%20(open%20access).pdf http://www.scopus.com/inward/record.url?scp=84974623798&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Potocki , M , Mayewski , P A , Kurbatov , A V , Simões , J C , Dixon , D A , Goodwin , I , Carleton , A M , Handley , M J , Jaña , R & Korotkikh , E V 2016 , ' Recent increase in Antarctic Peninsula ice core uranium concentrations ' , Atmospheric Environment , vol. 140 , pp. 381-385 . https://doi.org/10.1016/j.atmosenv.2016.06.010 article 2016 ftmacquarieunicr https://doi.org/10.1016/j.atmosenv.2016.06.010 2024-08-14T23:39:07Z Understanding the distribution of airborne uranium is important because it can result in both chemical and radiological toxicity. Ice cores offer the most robust reconstruction of past atmospheric levels of toxic substances. Here we present the first sub-annually dated, continuously sampled ice core documenting change in U levels in the Southern Hemisphere. The ice core was recovered from the Detroit Plateau, northern Antarctic Peninsula, in 2007 by a joint Brazilian-Chilean-US team. It displays a significant increase in U concentration that coincides with reported mining activities in the Southern Hemisphere, notably Australia. Raw U concentrations in the Detroit Plateau ice core increased by as much as 10 2 between the 1980s and 2000s accompanied by increased variability in recent years. Decadal mean U concentrations increased by a factor of ~3 from 1980 to 2007, reaching a mean of 205 pg/L from 2000 to 2007. The fact that other terrestrial source dust elements such as Ce, La, Pr, and Ti do not show a similar increase and that the increased U concentrations are enriched above natural crustal levels, supports an anthropogenic source for the U as opposed to a change in atmospheric circulation. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula ice core Macquarie University Research Portal Antarctic Antarctic Peninsula Detroit ENVELOPE(-60.000,-60.000,-64.167,-64.167) Atmospheric Environment 140 381 385 |
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Open Polar |
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Macquarie University Research Portal |
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ftmacquarieunicr |
language |
English |
description |
Understanding the distribution of airborne uranium is important because it can result in both chemical and radiological toxicity. Ice cores offer the most robust reconstruction of past atmospheric levels of toxic substances. Here we present the first sub-annually dated, continuously sampled ice core documenting change in U levels in the Southern Hemisphere. The ice core was recovered from the Detroit Plateau, northern Antarctic Peninsula, in 2007 by a joint Brazilian-Chilean-US team. It displays a significant increase in U concentration that coincides with reported mining activities in the Southern Hemisphere, notably Australia. Raw U concentrations in the Detroit Plateau ice core increased by as much as 10 2 between the 1980s and 2000s accompanied by increased variability in recent years. Decadal mean U concentrations increased by a factor of ~3 from 1980 to 2007, reaching a mean of 205 pg/L from 2000 to 2007. The fact that other terrestrial source dust elements such as Ce, La, Pr, and Ti do not show a similar increase and that the increased U concentrations are enriched above natural crustal levels, supports an anthropogenic source for the U as opposed to a change in atmospheric circulation. |
format |
Article in Journal/Newspaper |
author |
Potocki, Mariusz Mayewski, Paul A. Kurbatov, Andrei V. Simões, Jefferson C. Dixon, Daniel A. Goodwin, Ian Carleton, Andrew M. Handley, Michael J. Jaña, Ricardo Korotkikh, Elena V. |
spellingShingle |
Potocki, Mariusz Mayewski, Paul A. Kurbatov, Andrei V. Simões, Jefferson C. Dixon, Daniel A. Goodwin, Ian Carleton, Andrew M. Handley, Michael J. Jaña, Ricardo Korotkikh, Elena V. Recent increase in Antarctic Peninsula ice core uranium concentrations |
author_facet |
Potocki, Mariusz Mayewski, Paul A. Kurbatov, Andrei V. Simões, Jefferson C. Dixon, Daniel A. Goodwin, Ian Carleton, Andrew M. Handley, Michael J. Jaña, Ricardo Korotkikh, Elena V. |
author_sort |
Potocki, Mariusz |
title |
Recent increase in Antarctic Peninsula ice core uranium concentrations |
title_short |
Recent increase in Antarctic Peninsula ice core uranium concentrations |
title_full |
Recent increase in Antarctic Peninsula ice core uranium concentrations |
title_fullStr |
Recent increase in Antarctic Peninsula ice core uranium concentrations |
title_full_unstemmed |
Recent increase in Antarctic Peninsula ice core uranium concentrations |
title_sort |
recent increase in antarctic peninsula ice core uranium concentrations |
publishDate |
2016 |
url |
https://researchers.mq.edu.au/en/publications/f85a9b2b-f3ba-4fec-8ab1-34f85a4ea7f3 https://doi.org/10.1016/j.atmosenv.2016.06.010 https://research-management.mq.edu.au/ws/files/62372244/Publisher%20version%20(open%20access).pdf http://www.scopus.com/inward/record.url?scp=84974623798&partnerID=8YFLogxK |
long_lat |
ENVELOPE(-60.000,-60.000,-64.167,-64.167) |
geographic |
Antarctic Antarctic Peninsula Detroit |
geographic_facet |
Antarctic Antarctic Peninsula Detroit |
genre |
Antarc* Antarctic Antarctic Peninsula ice core |
genre_facet |
Antarc* Antarctic Antarctic Peninsula ice core |
op_source |
Potocki , M , Mayewski , P A , Kurbatov , A V , Simões , J C , Dixon , D A , Goodwin , I , Carleton , A M , Handley , M J , Jaña , R & Korotkikh , E V 2016 , ' Recent increase in Antarctic Peninsula ice core uranium concentrations ' , Atmospheric Environment , vol. 140 , pp. 381-385 . https://doi.org/10.1016/j.atmosenv.2016.06.010 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.atmosenv.2016.06.010 |
container_title |
Atmospheric Environment |
container_volume |
140 |
container_start_page |
381 |
op_container_end_page |
385 |
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1809822672316530688 |