The effect of a succession of ocean ventilation changes on 14C
Using the model of Stacker and Wright (1996), we investigate the effect of a succession of ocean ventilation changes on the atmospheric concentration of radiocarbon, δ14Catm, the surface reservoir ages, the top-to-bottom age differences, and the calendar-14C age relationships in different regions of...
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Arizona Board of Regents, University of Arizona
1998
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Online Access: | https://boris.unibe.ch/158704/1/stocker98rc.pdf https://boris.unibe.ch/158704/8/the-effect-of-a-succession-of-ocean-ventilation-changes-on-14c.pdf https://boris.unibe.ch/158704/ |
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ftunivbern:oai:boris.unibe.ch:158704 2023-08-20T04:08:16+02:00 The effect of a succession of ocean ventilation changes on 14C Stocker, Thomas F. Wright, Daniel G. 1998 application/pdf https://boris.unibe.ch/158704/1/stocker98rc.pdf https://boris.unibe.ch/158704/8/the-effect-of-a-succession-of-ocean-ventilation-changes-on-14c.pdf https://boris.unibe.ch/158704/ eng eng Arizona Board of Regents, University of Arizona https://boris.unibe.ch/158704/ info:eu-repo/semantics/openAccess info:eu-repo/semantics/restrictedAccess Stocker, Thomas F.; Wright, Daniel G. (1998). The effect of a succession of ocean ventilation changes on 14C. Radiocarbon, 40(1), pp. 359-366. Arizona Board of Regents, University of Arizona 10.1017/S0033822200018233 <http://dx.doi.org/10.1017/S0033822200018233> 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 1998 ftunivbern https://doi.org/10.1017/S0033822200018233 2023-07-31T22:08:15Z Using the model of Stacker and Wright (1996), we investigate the effect of a succession of ocean ventilation changes on the atmospheric concentration of radiocarbon, δ14Catm, the surface reservoir ages, the top-to-bottom age differences, and the calendar-14C age relationships in different regions of the ocean. The model includes a representation of the cycling of 14C through the atmosphere, the ocean and the land biosphere. Ocean ventilation changes are triggered by increasing rates of freshwater discharge into the North Atlantic, which are determined according to a simple feedback mechanism between the melting rates and the climatic state of the North Atlantic region. The results demonstrate that ventilation changes can cause δ14Catm fluctuations of 25%, surface reservoir age fluctuations of 100 yr in the Pacific (200 yr in the Atlantic) and top-to-bottom age variations of 500 yr in the Pacific (1000 yr in the Atlantic). We also show that 14C age estimates based on marine organisms that live in the near-surface region of the ocean and take up the signal of surface 14C can result in apparent age reversals if the assumption of a constant reservoir age is made. Article in Journal/Newspaper North Atlantic BORIS (Bern Open Repository and Information System, University of Bern) Pacific Radiocarbon 40 1 359 366 |
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Open Polar |
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BORIS (Bern Open Repository and Information System, University of Bern) |
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ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Stocker, Thomas F. Wright, Daniel G. The effect of a succession of ocean ventilation changes on 14C |
topic_facet |
530 Physics |
description |
Using the model of Stacker and Wright (1996), we investigate the effect of a succession of ocean ventilation changes on the atmospheric concentration of radiocarbon, δ14Catm, the surface reservoir ages, the top-to-bottom age differences, and the calendar-14C age relationships in different regions of the ocean. The model includes a representation of the cycling of 14C through the atmosphere, the ocean and the land biosphere. Ocean ventilation changes are triggered by increasing rates of freshwater discharge into the North Atlantic, which are determined according to a simple feedback mechanism between the melting rates and the climatic state of the North Atlantic region. The results demonstrate that ventilation changes can cause δ14Catm fluctuations of 25%, surface reservoir age fluctuations of 100 yr in the Pacific (200 yr in the Atlantic) and top-to-bottom age variations of 500 yr in the Pacific (1000 yr in the Atlantic). We also show that 14C age estimates based on marine organisms that live in the near-surface region of the ocean and take up the signal of surface 14C can result in apparent age reversals if the assumption of a constant reservoir age is made. |
format |
Article in Journal/Newspaper |
author |
Stocker, Thomas F. Wright, Daniel G. |
author_facet |
Stocker, Thomas F. Wright, Daniel G. |
author_sort |
Stocker, Thomas F. |
title |
The effect of a succession of ocean ventilation changes on 14C |
title_short |
The effect of a succession of ocean ventilation changes on 14C |
title_full |
The effect of a succession of ocean ventilation changes on 14C |
title_fullStr |
The effect of a succession of ocean ventilation changes on 14C |
title_full_unstemmed |
The effect of a succession of ocean ventilation changes on 14C |
title_sort |
effect of a succession of ocean ventilation changes on 14c |
publisher |
Arizona Board of Regents, University of Arizona |
publishDate |
1998 |
url |
https://boris.unibe.ch/158704/1/stocker98rc.pdf https://boris.unibe.ch/158704/8/the-effect-of-a-succession-of-ocean-ventilation-changes-on-14c.pdf https://boris.unibe.ch/158704/ |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Stocker, Thomas F.; Wright, Daniel G. (1998). The effect of a succession of ocean ventilation changes on 14C. Radiocarbon, 40(1), pp. 359-366. Arizona Board of Regents, University of Arizona 10.1017/S0033822200018233 <http://dx.doi.org/10.1017/S0033822200018233> |
op_relation |
https://boris.unibe.ch/158704/ |
op_rights |
info:eu-repo/semantics/openAccess info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1017/S0033822200018233 |
container_title |
Radiocarbon |
container_volume |
40 |
container_issue |
1 |
container_start_page |
359 |
op_container_end_page |
366 |
_version_ |
1774720442965164032 |