36Cl bomb pulse measured in a shallow ice core from Dye 3, Greenland
Nuclear weapons tests at oceanic sites during the 1950s produced a large amount of 36Cl (t1/2 = 3.0 × 105 yr) through neutron capture of 35Cl in seawater. Part of this anthropogenic 36Cl was injected into the stratosphere from where it was redistributed throughout the Earth. This pulse of 36Cl was f...
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1982
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ftunivbern:oai:boris.unibe.ch:158258 2023-08-20T04:06:11+02:00 36Cl bomb pulse measured in a shallow ice core from Dye 3, Greenland Elmore, D. Tubbs, L. Newman, D. Ma, X. Z. Finkel, R. Nishiizumi, K. Beer, J. Oeschger, H. Andree, M. 1982 application/pdf https://boris.unibe.ch/158258/1/elmore82nat.pdf https://boris.unibe.ch/158258/ eng eng Macmillan Journals Ltd. https://boris.unibe.ch/158258/ info:eu-repo/semantics/restrictedAccess Elmore, D.; Tubbs, L.; Newman, D.; Ma, X. Z.; Finkel, R.; Nishiizumi, K.; Beer, J.; Oeschger, H.; Andree, M. (1982). 36Cl bomb pulse measured in a shallow ice core from Dye 3, Greenland. Nature, 300(5894), pp. 735-737. Macmillan Journals Ltd. 10.1038/300735a0 <http://dx.doi.org/10.1038/300735a0> 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 1982 ftunivbern https://doi.org/10.1038/300735a0 2023-07-31T22:08:01Z Nuclear weapons tests at oceanic sites during the 1950s produced a large amount of 36Cl (t1/2 = 3.0 × 105 yr) through neutron capture of 35Cl in seawater. Part of this anthropogenic 36Cl was injected into the stratosphere from where it was redistributed throughout the Earth. This pulse of 36Cl was first detected in rainfall by Schaeffer et al.(1). The global deposition rates are several orders of magnitude larger than the natural pre-and post-bomb 36Cl production rate that reflects cosmic-ray spallation of atmospheric 40Ar. Because 36Cl is not a fission product, the anthropogenic 36Cl is produced mainly in marine tests carried out on small islands and barges where a large amount of seawater chlorine is present to serve as a target. This target element requirement leads to a temporal dependence different from the other bomb produced isotopes(2–4). We have determined the temporal dependence of 36Cl fallout by measuring the depth profile of 36Cl in an ice core from Dye 3 Greenland (65° 11′ N, 43° 50′ W) using tandem accelerator mass spectrometry(5). We show here that the results agree well with a calculation of the 36Cl produced and injected into the stratosphere by the tests. Article in Journal/Newspaper Dye 3 Dye-3 Greenland ice core BORIS (Bern Open Repository and Information System, University of Bern) Greenland Nature 300 5894 735 737 |
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Open Polar |
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BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Elmore, D. Tubbs, L. Newman, D. Ma, X. Z. Finkel, R. Nishiizumi, K. Beer, J. Oeschger, H. Andree, M. 36Cl bomb pulse measured in a shallow ice core from Dye 3, Greenland |
topic_facet |
530 Physics |
description |
Nuclear weapons tests at oceanic sites during the 1950s produced a large amount of 36Cl (t1/2 = 3.0 × 105 yr) through neutron capture of 35Cl in seawater. Part of this anthropogenic 36Cl was injected into the stratosphere from where it was redistributed throughout the Earth. This pulse of 36Cl was first detected in rainfall by Schaeffer et al.(1). The global deposition rates are several orders of magnitude larger than the natural pre-and post-bomb 36Cl production rate that reflects cosmic-ray spallation of atmospheric 40Ar. Because 36Cl is not a fission product, the anthropogenic 36Cl is produced mainly in marine tests carried out on small islands and barges where a large amount of seawater chlorine is present to serve as a target. This target element requirement leads to a temporal dependence different from the other bomb produced isotopes(2–4). We have determined the temporal dependence of 36Cl fallout by measuring the depth profile of 36Cl in an ice core from Dye 3 Greenland (65° 11′ N, 43° 50′ W) using tandem accelerator mass spectrometry(5). We show here that the results agree well with a calculation of the 36Cl produced and injected into the stratosphere by the tests. |
format |
Article in Journal/Newspaper |
author |
Elmore, D. Tubbs, L. Newman, D. Ma, X. Z. Finkel, R. Nishiizumi, K. Beer, J. Oeschger, H. Andree, M. |
author_facet |
Elmore, D. Tubbs, L. Newman, D. Ma, X. Z. Finkel, R. Nishiizumi, K. Beer, J. Oeschger, H. Andree, M. |
author_sort |
Elmore, D. |
title |
36Cl bomb pulse measured in a shallow ice core from Dye 3, Greenland |
title_short |
36Cl bomb pulse measured in a shallow ice core from Dye 3, Greenland |
title_full |
36Cl bomb pulse measured in a shallow ice core from Dye 3, Greenland |
title_fullStr |
36Cl bomb pulse measured in a shallow ice core from Dye 3, Greenland |
title_full_unstemmed |
36Cl bomb pulse measured in a shallow ice core from Dye 3, Greenland |
title_sort |
36cl bomb pulse measured in a shallow ice core from dye 3, greenland |
publisher |
Macmillan Journals Ltd. |
publishDate |
1982 |
url |
https://boris.unibe.ch/158258/1/elmore82nat.pdf https://boris.unibe.ch/158258/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Dye 3 Dye-3 Greenland ice core |
genre_facet |
Dye 3 Dye-3 Greenland ice core |
op_source |
Elmore, D.; Tubbs, L.; Newman, D.; Ma, X. Z.; Finkel, R.; Nishiizumi, K.; Beer, J.; Oeschger, H.; Andree, M. (1982). 36Cl bomb pulse measured in a shallow ice core from Dye 3, Greenland. Nature, 300(5894), pp. 735-737. Macmillan Journals Ltd. 10.1038/300735a0 <http://dx.doi.org/10.1038/300735a0> |
op_relation |
https://boris.unibe.ch/158258/ |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1038/300735a0 |
container_title |
Nature |
container_volume |
300 |
container_issue |
5894 |
container_start_page |
735 |
op_container_end_page |
737 |
_version_ |
1774717130670866432 |