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Volumn 310, Issue 5753, 2005, Pages 1469-1473

Ocean science: Radiocarbon variability in the western North Atlantic during the last deglaciation

Author keywords

[No Author keywords available]

Indexed keywords

GLACIAL GEOLOGY;

EID: 28544453427     PISSN: 00368075     EISSN: 10959203     Source Type: Journal    
DOI: 10.1126/science.1114832     Document Type: Article
Times cited : (243)

References (55)
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    • D. dianthus and D. cristagalli are two names for the same coral; the former is more widely used.
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    • 14C, the ratio of a sample to the preindustrial prenuclear atmospheric standard in units of ‰.
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    • All corals in this study were collected in May 2003 using the deep submergence vehicle Alvin, ensuring that the depth of each coral (between 1100 and 2500 m) was well known; the corals were collected at, or near, life position. The Seamount locations are Muir, 33°30′N, 62°30′W; Manning, ∼38°0′N, 60°30′W; and Gregg 39°0′N, 61°0′W.
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    • Materials and methods are available as supporting material on Science Online.
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    • 10Be accumulation rate changes that are not correlated with cosmogenic radionuclide production rate changes. We do not consider this possible source of error in our analysis.
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    • 14C values ∼25‰ and ∼0‰ below the atmosphere, respectively. From the end of Heinrich 1 to ∼14.2 ka, the atmospheric radiocarbon content dropped at least as fast as the decay rate, leading to a situation in which the decrease in the radiocarbon content of the atmosphere could "overtake" the decay rate in an isolated water mass. Two samples from the end of the Younger Dryas are also within error of the atmospheric value and lie at the end of a marked drop in the atmospheric radiocarbon content (28).
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    • This trend is well constrained by five BF-PF pairs, three of which (including the oldest and youngest) are from the same core.
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    • note
    • We acknowledge the Comer Foundation for Abrupt Climate Change, the Henry Luce Foundation, the American Chemical Society Petroleum Research Fund, and NSF grant numbers OCE-0096373 and OCE-0095331. We also thank all members of the cruise AT7-35 to the New England Seamounts.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.