| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Paleoproductivity variations in the southern Okinawa Trough since the middle Holocene: Calcareous nannofossil records
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| Autores: |
Zhao, Jingtao
Li, Tiegang
Li, Jun
Hu, Bangqi
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| Data: |
2012-10
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| Ano: |
2012
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| Palavras-chave: |
Middle Holocene
The southern Okinawa Trough
Primary productivity
Calcareous nannofossil
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| Resumo: |
Based on 17 AMS(14)C age data, we reconstructed high-resolution records of sea surface primary productivity (PP) in the southern Okinawa Trough (MD05-2908) over the last 6.8 ka BP using the calcareous nannofossil carbon isotope and the relative percentage contents of Florisphaera profunda indexes. The underlying mechanism controlling the sea surface PP was then discussed. The sea surface PP, indicated by the coccolith delta C-13 and %Fp conversional equations, decreased with some fluctuations since 6.8 ka BP. This decrease may be connected to the decreased terrigenous input resulting from the reduced East Asian Summer Monsoon (EASM) precipitation. Both the periods of 4-2 ka BP (PME) and 6.8-4.8 ka BP were characterized by relatively higher PP. The former was mainly controlled by the weakening of the Kuroshio Current, whereas the latter mainly resulted from the greater terrigenous input associated with the stronger EASM.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00265/37615/36518.pdf
DOI:10.1007/s11434-012-5276-y
https://archimer.ifremer.fr/doc/00265/37615/
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| Editor: |
Science Press
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| Formato: |
application/pdf
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| Fonte: |
Chinese Science Bulletin (1001-6538) (Science Press), 2012-10 , Vol. 57 , N. 30 , P. 3917-3922
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| Direitos: |
The Author(s) 2012. This article is published with open access at Springerlink.com
info:eu-repo/semantics/openAccess
restricted use
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