Global Peak in Atmospheric Radiocarbon Provides a Potential Definition for the Onset of the Anthropocene Epoch in 1965

Abstract Anthropogenic activity is now recognised as having profoundly and permanently altered the Earth system, suggesting we have entered a human-dominated geological epoch, the ‘Anthropocene’. To formally define the onset of the Anthropocene, a synchronous global signature within geological-formi...

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Autores principales:	Chris S. M. Turney, Jonathan Palmer, Mark A. Maslin, Alan Hogg, Christopher J. Fogwill, John Southon, Pavla Fenwick, Gerhard Helle, Janet M. Wilmshurst, Matt McGlone, Christopher Bronk Ramsey, Zoë Thomas, Mathew Lipson, Brent Beaven, Richard T. Jones, Oliver Andrews, Quan Hua
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c44361115855450b9cd340da2e13a288
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spelling	oai:doaj.org-article:c44361115855450b9cd340da2e13a2882021-12-02T15:07:49ZGlobal Peak in Atmospheric Radiocarbon Provides a Potential Definition for the Onset of the Anthropocene Epoch in 196510.1038/s41598-018-20970-52045-2322https://doaj.org/article/c44361115855450b9cd340da2e13a2882018-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-20970-5https://doaj.org/toc/2045-2322Abstract Anthropogenic activity is now recognised as having profoundly and permanently altered the Earth system, suggesting we have entered a human-dominated geological epoch, the ‘Anthropocene’. To formally define the onset of the Anthropocene, a synchronous global signature within geological-forming materials is required. Here we report a series of precisely-dated tree-ring records from Campbell Island (Southern Ocean) that capture peak atmospheric radiocarbon (14C) resulting from Northern Hemisphere-dominated thermonuclear bomb tests during the 1950s and 1960s. The only alien tree on the island, a Sitka spruce (Picea sitchensis), allows us to seasonally-resolve Southern Hemisphere atmospheric 14C, demonstrating the ‘bomb peak’ in this remote and pristine location occurred in the last-quarter of 1965 (October-December), coincident with the broader changes associated with the post-World War II ‘Great Acceleration’ in industrial capacity and consumption. Our findings provide a precisely-resolved potential Global Stratotype Section and Point (GSSP) or ‘golden spike’, marking the onset of the Anthropocene Epoch.Chris S. M. TurneyJonathan PalmerMark A. MaslinAlan HoggChristopher J. FogwillJohn SouthonPavla FenwickGerhard HelleJanet M. WilmshurstMatt McGloneChristopher Bronk RamseyZoë ThomasMathew LipsonBrent BeavenRichard T. JonesOliver AndrewsQuan HuaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Chris S. M. Turney Jonathan Palmer Mark A. Maslin Alan Hogg Christopher J. Fogwill John Southon Pavla Fenwick Gerhard Helle Janet M. Wilmshurst Matt McGlone Christopher Bronk Ramsey Zoë Thomas Mathew Lipson Brent Beaven Richard T. Jones Oliver Andrews Quan Hua Global Peak in Atmospheric Radiocarbon Provides a Potential Definition for the Onset of the Anthropocene Epoch in 1965
description	Abstract Anthropogenic activity is now recognised as having profoundly and permanently altered the Earth system, suggesting we have entered a human-dominated geological epoch, the ‘Anthropocene’. To formally define the onset of the Anthropocene, a synchronous global signature within geological-forming materials is required. Here we report a series of precisely-dated tree-ring records from Campbell Island (Southern Ocean) that capture peak atmospheric radiocarbon (14C) resulting from Northern Hemisphere-dominated thermonuclear bomb tests during the 1950s and 1960s. The only alien tree on the island, a Sitka spruce (Picea sitchensis), allows us to seasonally-resolve Southern Hemisphere atmospheric 14C, demonstrating the ‘bomb peak’ in this remote and pristine location occurred in the last-quarter of 1965 (October-December), coincident with the broader changes associated with the post-World War II ‘Great Acceleration’ in industrial capacity and consumption. Our findings provide a precisely-resolved potential Global Stratotype Section and Point (GSSP) or ‘golden spike’, marking the onset of the Anthropocene Epoch.
format	article
author	Chris S. M. Turney Jonathan Palmer Mark A. Maslin Alan Hogg Christopher J. Fogwill John Southon Pavla Fenwick Gerhard Helle Janet M. Wilmshurst Matt McGlone Christopher Bronk Ramsey Zoë Thomas Mathew Lipson Brent Beaven Richard T. Jones Oliver Andrews Quan Hua
author_facet	Chris S. M. Turney Jonathan Palmer Mark A. Maslin Alan Hogg Christopher J. Fogwill John Southon Pavla Fenwick Gerhard Helle Janet M. Wilmshurst Matt McGlone Christopher Bronk Ramsey Zoë Thomas Mathew Lipson Brent Beaven Richard T. Jones Oliver Andrews Quan Hua
author_sort	Chris S. M. Turney
title	Global Peak in Atmospheric Radiocarbon Provides a Potential Definition for the Onset of the Anthropocene Epoch in 1965
title_short	Global Peak in Atmospheric Radiocarbon Provides a Potential Definition for the Onset of the Anthropocene Epoch in 1965
title_full	Global Peak in Atmospheric Radiocarbon Provides a Potential Definition for the Onset of the Anthropocene Epoch in 1965
title_fullStr	Global Peak in Atmospheric Radiocarbon Provides a Potential Definition for the Onset of the Anthropocene Epoch in 1965
title_full_unstemmed	Global Peak in Atmospheric Radiocarbon Provides a Potential Definition for the Onset of the Anthropocene Epoch in 1965
title_sort	global peak in atmospheric radiocarbon provides a potential definition for the onset of the anthropocene epoch in 1965
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/c44361115855450b9cd340da2e13a288
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Global Peak in Atmospheric Radiocarbon Provides a Potential Definition for the Onset of the Anthropocene Epoch in 1965

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