| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Sea surface temperature and terrestrial biomarker records of the last 260 ka of core MD05-2904 from the northern South China Sea
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| Autores: |
He, Juan
Zhao, Meixun
Li, Li
Wang, Pinxian
Ge, Huangmin
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| Data: |
2008-08
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| Ano: |
2008
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| Palavras-chave: |
Northern South China Sea
Sea surface temperature
Terrestrial input
Source region vegetation
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| Resumo: |
This paper reports high-resolution biomarker records of the last 260 ka for core MD05- 2904 from the northern South China Sea (SCS). The sea surface temperature (SST) record using the U-37(k') index reveals a minimum of 21.5 degrees C (MIS 2) and a maximum of 28.3 degrees C (MIS 5.5), for a temperature difference of almost 7 degrees C, and provides the longest high-resolution U-37(k') SST record in northern SCS. The content of odd-number long chain n-alkanes and several n-alkanes indexes such as the CPI, ACL and the C-31/C-27 ratio, all reveal generally higher values during the glacials and lower values during the interglacials. Terrestrial input as indicated by n-alkane content was mostly controlled by sea-level changes: During the glacials, lower sea-level exposed the continental shelf to enable rivers to transport more terrestrial materials to the slope; and the situation reverses during the interglacials. The n-alkane indexes changes reveal more n-alkanes from contemporary vegetation during glacials as a result of the proximity of the core site to the source region, while the increases in ACL and C-31/C-27 ratio during glacials indicate a change to more grassy vegetation. However, the highest values for CPI, ACL and the C-31/C-27 ratio all occurred during late MIS 3, and it was suggested that this period was characterized by a strong summer monsoon-dominated humid climate which resulted in a denser vegetation for the exposed continental shelf region.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00207/31844/30259.pdf
DOI:10.1007/s11434-008-0289-2
https://archimer.ifremer.fr/doc/00207/31844/
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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), 2008-08 , Vol. 53 , N. 15 , P. 2376-2384
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| Direitos: |
2008 Science in China Press - Springer
info:eu-repo/semantics/openAccess
restricted use
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