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Refined modeling and 14C plateau tuning reveal consistent patterns of glacial and deglacial 14C reservoir ages of surface waters in low-latitude Atlantic ArchiMer
Balmer, Sven; Sarnthein, Michael; Mudelsee, Manfred; Grootes, Pieter M..
Modeling studies predict that changes in radiocarbon (C-14) reservoir ages of surface waters during the last deglacial episode will reflect changes in both atmospheric C-14 concentration and ocean circulation including the Atlantic Meridional Overturning Circulation. Tests of these models require the availability of accurate C-14 reservoir ages in well-dated late Quaternary time series. We here test two models using plateau-tuned C-14 time series in multiple well-placed sediment core age-depth sequences throughout the lower latitudes of the Atlantic Ocean. C-14 age plateau tuning in glacial and deglacial sequences provides accurate calendar year ages that differ by as much as 500-2500years from those based on assumed global reservoir ages around 400years....
Tipo: Text Palavras-chave: C-14 reservoir ages; Atlantic paleoceangoraphy; Surface water hydrography; Glacial-to-deglacial variability; Data-model comparison.
Ano: 2016 URL: https://archimer.ifremer.fr/doc/00421/53227/54789.pdf
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