In-Situ Radiocarbon Production by Neutrons and Muons in an Antarctic Blue Ice Field at Scharffenbergbotnen: A Status Report
In the radiocarbon accelerator mass spectrometry ( 14 C AMS) analysis of gases obtained in a dry extraction from a 52–m Antarctic ice core, we observed 14 CO 2 and 14 CO concentrations decreasing with depth. The concentrations are explained in terms of in-situ production by neutrons and captured muo...
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2001
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Online Access: | http://dx.doi.org/10.1017/s0033822200041412 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822200041412 |
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crcambridgeupr:10.1017/s0033822200041412 2024-09-15T17:45:47+00:00 In-Situ Radiocarbon Production by Neutrons and Muons in an Antarctic Blue Ice Field at Scharffenbergbotnen: A Status Report van der Borg, K van der Kemp, W J M Alderliesten, C de Jong, A F M Lamers, R A N Oerlemans, J Thomassen, M van de Wal, R S W 2001 http://dx.doi.org/10.1017/s0033822200041412 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822200041412 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Radiocarbon volume 43, issue 2B, page 751-757 ISSN 0033-8222 1945-5755 journal-article 2001 crcambridgeupr https://doi.org/10.1017/s0033822200041412 2024-06-26T04:03:58Z In the radiocarbon accelerator mass spectrometry ( 14 C AMS) analysis of gases obtained in a dry extraction from a 52–m Antarctic ice core, we observed 14 CO 2 and 14 CO concentrations decreasing with depth. The concentrations are explained in terms of in-situ production by neutrons and captured muons in ablating ice. The ratio of the 14 CO2 concentration to that of 14 CO has been found to be constant at 1.9 ± 0.3. The ablation rates obtained of 42 ± 18 cm.yr −1 and 40 ± 13 cm.yr −1 for the neutron and muon components, respectively, are about three times higher than observed from stake readings. The discrepancy may point to an incomplete extraction of the dry extraction method. Using the constant ratio in 14 CO 2 and 14 CO concentrations we correct for the in-situ component in the trapped 14 CO 2 and deduce an age of 10,300 ± 900 BP for the ice core. Article in Journal/Newspaper Antarc* Antarctic ice core Cambridge University Press Radiocarbon 43 2B 751 757 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
In the radiocarbon accelerator mass spectrometry ( 14 C AMS) analysis of gases obtained in a dry extraction from a 52–m Antarctic ice core, we observed 14 CO 2 and 14 CO concentrations decreasing with depth. The concentrations are explained in terms of in-situ production by neutrons and captured muons in ablating ice. The ratio of the 14 CO2 concentration to that of 14 CO has been found to be constant at 1.9 ± 0.3. The ablation rates obtained of 42 ± 18 cm.yr −1 and 40 ± 13 cm.yr −1 for the neutron and muon components, respectively, are about three times higher than observed from stake readings. The discrepancy may point to an incomplete extraction of the dry extraction method. Using the constant ratio in 14 CO 2 and 14 CO concentrations we correct for the in-situ component in the trapped 14 CO 2 and deduce an age of 10,300 ± 900 BP for the ice core. |
format |
Article in Journal/Newspaper |
author |
van der Borg, K van der Kemp, W J M Alderliesten, C de Jong, A F M Lamers, R A N Oerlemans, J Thomassen, M van de Wal, R S W |
spellingShingle |
van der Borg, K van der Kemp, W J M Alderliesten, C de Jong, A F M Lamers, R A N Oerlemans, J Thomassen, M van de Wal, R S W In-Situ Radiocarbon Production by Neutrons and Muons in an Antarctic Blue Ice Field at Scharffenbergbotnen: A Status Report |
author_facet |
van der Borg, K van der Kemp, W J M Alderliesten, C de Jong, A F M Lamers, R A N Oerlemans, J Thomassen, M van de Wal, R S W |
author_sort |
van der Borg, K |
title |
In-Situ Radiocarbon Production by Neutrons and Muons in an Antarctic Blue Ice Field at Scharffenbergbotnen: A Status Report |
title_short |
In-Situ Radiocarbon Production by Neutrons and Muons in an Antarctic Blue Ice Field at Scharffenbergbotnen: A Status Report |
title_full |
In-Situ Radiocarbon Production by Neutrons and Muons in an Antarctic Blue Ice Field at Scharffenbergbotnen: A Status Report |
title_fullStr |
In-Situ Radiocarbon Production by Neutrons and Muons in an Antarctic Blue Ice Field at Scharffenbergbotnen: A Status Report |
title_full_unstemmed |
In-Situ Radiocarbon Production by Neutrons and Muons in an Antarctic Blue Ice Field at Scharffenbergbotnen: A Status Report |
title_sort |
in-situ radiocarbon production by neutrons and muons in an antarctic blue ice field at scharffenbergbotnen: a status report |
publisher |
Cambridge University Press (CUP) |
publishDate |
2001 |
url |
http://dx.doi.org/10.1017/s0033822200041412 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822200041412 |
genre |
Antarc* Antarctic ice core |
genre_facet |
Antarc* Antarctic ice core |
op_source |
Radiocarbon volume 43, issue 2B, page 751-757 ISSN 0033-8222 1945-5755 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0033822200041412 |
container_title |
Radiocarbon |
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43 |
container_issue |
2B |
container_start_page |
751 |
op_container_end_page |
757 |
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1810493698969960448 |