A rapid cosmic-ray increase in BC 3372–3371 from ancient buried tree rings in China

Cosmic rays interact with the Earth’s atmosphere to produce (14)C, which can be absorbed by trees. Therefore, rapid increases of (14)C in tree rings can be used to probe previous cosmic-ray events. By this method, three (14)C rapidly increasing events have been found. Plausible causes of these event...

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Autores principales: Wang, F. Y., Yu, H., Zou, Y. C., Dai, Z. G., Cheng, K. S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5684315/
https://www.ncbi.nlm.nih.gov/pubmed/29133840
http://dx.doi.org/10.1038/s41467-017-01698-8
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author Wang, F. Y.
Yu, H.
Zou, Y. C.
Dai, Z. G.
Cheng, K. S.
author_facet Wang, F. Y.
Yu, H.
Zou, Y. C.
Dai, Z. G.
Cheng, K. S.
author_sort Wang, F. Y.
collection PubMed
description Cosmic rays interact with the Earth’s atmosphere to produce (14)C, which can be absorbed by trees. Therefore, rapid increases of (14)C in tree rings can be used to probe previous cosmic-ray events. By this method, three (14)C rapidly increasing events have been found. Plausible causes of these events include large solar proton events, supernovae, or short gamma-ray bursts. However, due to the lack of measurements of (14)C by year, the occurrence frequency of such (14)C rapidly increasing events is poorly known. In addition, rapid increases may be hidden in the IntCal13 data with five-year resolution. Here we report the result of (14)C measurements using an ancient buried tree during the period between bc 3388 and 3358. We found a rapid increase of about 9‰ in the (14)C content from bc 3372 to bc 3371. We suggest that this event could originate from a large solar proton event.
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spelling pubmed-56843152017-11-17 A rapid cosmic-ray increase in BC 3372–3371 from ancient buried tree rings in China Wang, F. Y. Yu, H. Zou, Y. C. Dai, Z. G. Cheng, K. S. Nat Commun Article Cosmic rays interact with the Earth’s atmosphere to produce (14)C, which can be absorbed by trees. Therefore, rapid increases of (14)C in tree rings can be used to probe previous cosmic-ray events. By this method, three (14)C rapidly increasing events have been found. Plausible causes of these events include large solar proton events, supernovae, or short gamma-ray bursts. However, due to the lack of measurements of (14)C by year, the occurrence frequency of such (14)C rapidly increasing events is poorly known. In addition, rapid increases may be hidden in the IntCal13 data with five-year resolution. Here we report the result of (14)C measurements using an ancient buried tree during the period between bc 3388 and 3358. We found a rapid increase of about 9‰ in the (14)C content from bc 3372 to bc 3371. We suggest that this event could originate from a large solar proton event. Nature Publishing Group UK 2017-11-14 /pmc/articles/PMC5684315/ /pubmed/29133840 http://dx.doi.org/10.1038/s41467-017-01698-8 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Wang, F. Y.
Yu, H.
Zou, Y. C.
Dai, Z. G.
Cheng, K. S.
A rapid cosmic-ray increase in BC 3372–3371 from ancient buried tree rings in China
title A rapid cosmic-ray increase in BC 3372–3371 from ancient buried tree rings in China
title_full A rapid cosmic-ray increase in BC 3372–3371 from ancient buried tree rings in China
title_fullStr A rapid cosmic-ray increase in BC 3372–3371 from ancient buried tree rings in China
title_full_unstemmed A rapid cosmic-ray increase in BC 3372–3371 from ancient buried tree rings in China
title_short A rapid cosmic-ray increase in BC 3372–3371 from ancient buried tree rings in China
title_sort rapid cosmic-ray increase in bc 3372–3371 from ancient buried tree rings in china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5684315/
https://www.ncbi.nlm.nih.gov/pubmed/29133840
http://dx.doi.org/10.1038/s41467-017-01698-8
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