Plutonium from Global Fallout Recorded in an Ice Core from the Belukha Glacier, Siberian Altai
Ice cores from glaciers situated near anthropogenic sources of air pollution provide important archives of the emissions of species with short atmospheric lifetimes. Here we present the history of atmospheric Pu fallout reconstructed from an ice core from the Belukha glacier in the Siberian Altai. F...
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ftanucanberra:oai:digitalcollections.anu.edu.au:1885/86369 2023-05-15T16:38:38+02:00 Plutonium from Global Fallout Recorded in an Ice Core from the Belukha Glacier, Siberian Altai Olivier, S Bajo, Sixto Fifield, L Keith Gaggeler, H W Papina, Tatyana Santschi, P Schotterer, U Schwikowski, Margit Wacker, L. 2015-12-13T23:07:49Z http://hdl.handle.net/1885/86369 unknown American Chemical Society 0013-936X http://hdl.handle.net/1885/86369 Environmental Science and Technology Keywords: Air pollution Glaciers Ice Mass spectrometry Ordnance Particulate emissions Troposphere Upper atmosphere Global fallout Ice core Nuclear weapons Postmoratorium testing Plutonium atmospheric deposition fallout Journal article 2015 ftanucanberra 2015-12-28T23:39:03Z Ice cores from glaciers situated near anthropogenic sources of air pollution provide important archives of the emissions of species with short atmospheric lifetimes. Here we present the history of atmospheric Pu fallout reconstructed from an ice core from the Belukha glacier in the Siberian Altai. Fourteen ice core samples covering the time period 1941-1986 were selected for Pu analysis, chemically processed, and measured using accelerator mass spectrometry. The Pu concentration peaks in 1963, coinciding with the maximum of the nuclear weapons tests and in concordance with the3H activity concentration peak. The shapes of the239Pu and3H profiles reflect two main periods of atmospheric nuclear test activity: premoratorium testing before 1958 and postmoratorium testing in 1961 and 1962. Premoratorium tests contribute about 45% of the integrated Pu inventory. The average240Pu/239Pu isotopic ratio is 0.18 ± 0.05, indicating that a large majority of the Pu in the Belukha glacier originates from global stratospheric fallout rather than from direct tropospheric input. Article in Journal/Newspaper ice core Australian National University: ANU Digital Collections |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
topic |
Keywords: Air pollution Glaciers Ice Mass spectrometry Ordnance Particulate emissions Troposphere Upper atmosphere Global fallout Ice core Nuclear weapons Postmoratorium testing Plutonium atmospheric deposition fallout |
spellingShingle |
Keywords: Air pollution Glaciers Ice Mass spectrometry Ordnance Particulate emissions Troposphere Upper atmosphere Global fallout Ice core Nuclear weapons Postmoratorium testing Plutonium atmospheric deposition fallout Olivier, S Bajo, Sixto Fifield, L Keith Gaggeler, H W Papina, Tatyana Santschi, P Schotterer, U Schwikowski, Margit Wacker, L. Plutonium from Global Fallout Recorded in an Ice Core from the Belukha Glacier, Siberian Altai |
topic_facet |
Keywords: Air pollution Glaciers Ice Mass spectrometry Ordnance Particulate emissions Troposphere Upper atmosphere Global fallout Ice core Nuclear weapons Postmoratorium testing Plutonium atmospheric deposition fallout |
description |
Ice cores from glaciers situated near anthropogenic sources of air pollution provide important archives of the emissions of species with short atmospheric lifetimes. Here we present the history of atmospheric Pu fallout reconstructed from an ice core from the Belukha glacier in the Siberian Altai. Fourteen ice core samples covering the time period 1941-1986 were selected for Pu analysis, chemically processed, and measured using accelerator mass spectrometry. The Pu concentration peaks in 1963, coinciding with the maximum of the nuclear weapons tests and in concordance with the3H activity concentration peak. The shapes of the239Pu and3H profiles reflect two main periods of atmospheric nuclear test activity: premoratorium testing before 1958 and postmoratorium testing in 1961 and 1962. Premoratorium tests contribute about 45% of the integrated Pu inventory. The average240Pu/239Pu isotopic ratio is 0.18 ± 0.05, indicating that a large majority of the Pu in the Belukha glacier originates from global stratospheric fallout rather than from direct tropospheric input. |
format |
Article in Journal/Newspaper |
author |
Olivier, S Bajo, Sixto Fifield, L Keith Gaggeler, H W Papina, Tatyana Santschi, P Schotterer, U Schwikowski, Margit Wacker, L. |
author_facet |
Olivier, S Bajo, Sixto Fifield, L Keith Gaggeler, H W Papina, Tatyana Santschi, P Schotterer, U Schwikowski, Margit Wacker, L. |
author_sort |
Olivier, S |
title |
Plutonium from Global Fallout Recorded in an Ice Core from the Belukha Glacier, Siberian Altai |
title_short |
Plutonium from Global Fallout Recorded in an Ice Core from the Belukha Glacier, Siberian Altai |
title_full |
Plutonium from Global Fallout Recorded in an Ice Core from the Belukha Glacier, Siberian Altai |
title_fullStr |
Plutonium from Global Fallout Recorded in an Ice Core from the Belukha Glacier, Siberian Altai |
title_full_unstemmed |
Plutonium from Global Fallout Recorded in an Ice Core from the Belukha Glacier, Siberian Altai |
title_sort |
plutonium from global fallout recorded in an ice core from the belukha glacier, siberian altai |
publisher |
American Chemical Society |
publishDate |
2015 |
url |
http://hdl.handle.net/1885/86369 |
genre |
ice core |
genre_facet |
ice core |
op_source |
Environmental Science and Technology |
op_relation |
0013-936X http://hdl.handle.net/1885/86369 |
_version_ |
1766028944433217536 |