High concentration of atmospheric 14C during the Younger Dryas cold episode
Authors:
- Tomasz Edward Goslar,
- Maurice Arnold,
- Edouard Bard,
- Tadeusz Kuc,
- Mieczysław F. Pazdur,
- Magdalena Ralska-Jasiewiczowa,
- Kazimierz Różanski,
- Nadine Tisnerat,
- Adam Walanus,
- Bogumił Wicik,
- Kazimierz Wiȩqkowski
Abstract
The various reservoirs of the global carbon cycle, with their very different residence times, are linked by a complex and evolving system of exchanges for which natural radiocarbon is the most robust tracer1. Any change in the sizes of these reservoirs, or the exchange rates between them, could perturb the 14C/12C ratio of each other reservoir, and the smallest of them—the atmosphere— would be the most sensitive. In particular, high-resolution reconstructions of past atmospheric 14C/12C ratios may provide important clues to the mechanisms of abrupt climate change. Annually laminated lake sediments potentially provide an optimal record in this respect, as they preserve information about both past atmospheric 14C levels and climate changes, providing absolutely dated material beyond the range of tree-ring chronologies and, unlike corals, directly monitor 14C concentrations in atmospheric CO2. Here we report the relationship between atmospheric 14C concentration and climate changes during the Younger Dryas and early Holocene periods, derived from analyses of the annually laminated sediments of Lake Gśoscia¸ażz, in central Poland. We find that atmospheric 14C concentrations during the Younger Dryas were abnormally high, which we interpret as a reduced ventilation rate of the deep ocean, most probably as a result of a decrease in intensity of the North Atlantic Deep Water formation.
- Record ID
- UAMa52de5995c8047b0a9fc20793e35145c
- Author
- Journal series
- Nature, ISSN 0028-0836, e-ISSN 1476-4687
- Issue year
- 1995
- Vol
- 377
- No
- 6548
- Pages
- 414-417
- ASJC Classification
- DOI
- DOI:10.1038/377414a0 Opening in a new tab
- Language
- (en) English
- File
-
- File: 1
- file
-
- File: 2
- file
-
- Score (nominal)
- 0
- Score source
- journalList
- Publication indicators
- = 176; = 194; : 1999 = 7.235; : 2006 (2 years) = 26.681 - 2007 (5 years) =30.616
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- Uniform Resource Identifier
- https://researchportal.amu.edu.pl/info/article/UAMa52de5995c8047b0a9fc20793e35145c/
- URN
urn:amu-prod:UAMa52de5995c8047b0a9fc20793e35145c
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.