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	Provedor de dados ArchiMer (1) Autor Amrhein, Daniel (1) Gebbie, Geoffrey (1) Keigwin, Lloyd (1) Marchal, Olivier (1) Zhao, Ning (1) Palavra-chave Data synthesis (1) Inverse method (1) Last deglaciation (1) Ocean ventilation (1) Radiocarbon (1) Tipo do documento Text (1) Ano 2018 (1) País France (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última A Synthesis of Deglacial Deep-Sea Radiocarbon Records and Their (In)Consistency With Modern Ocean Ventilation ArchiMer Zhao, Ning; Marchal, Olivier; Keigwin, Lloyd; Amrhein, Daniel; Gebbie, Geoffrey. We present a synthesis of 1,361 deep-sea radiocarbon data spanning the past 40kyr and computed (for C-14-dated records) from the same calibration to atmospheric C-14. The most notable feature in our compilation is a long-term Delta C-14 decline in deep oceanic basins over the past 25kyr. The Delta C-14 decline mirrors the drop in reconstructed atmospheric Delta C-14, suggesting that it may reflect a decrease in global C-14 inventory rather than a redistribution of C-14 among different reservoirs. Motivated by this observation, we explore the extent to which the deep water C-14 data jointly require changes in basin-scale ventilation during the last deglaciation, based on the fit of a 16-box model of modern ocean ventilation to the deep water Delta C-14... Tipo: Text Palavras-chave: Last deglaciation; Ocean ventilation; Data synthesis; Radiocarbon; Inverse method. Ano: 2018 URL: https://archimer.ifremer.fr/doc/00496/60790/64955.pdf Registros recuperados: 1 Primeira ... 1 ... Última

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