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学科主题: Multidisciplinary Sciences
题名: Paleoproductivity variations in the southern Okinawa Trough since the middle Holocene: Calcareous nannofossil records
作者: Zhao, JT ; Li, TG ; Li, J ; Hu, BQ
通讯作者: tgli@ms.qdio.ac.cn
关键词: middle Holocene ; the southern Okinawa Trough ; primary productivity ; calcareous nannofossil
刊名: CHINESE SCIENCE BULLETIN
发表日期: 2012
卷: 57, 期:30, 页:3917-3922
部门归属: [Zhao JingTao; Li TieGang] Chinese Acad Sci, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao 266071, Peoples R China; [Zhao JingTao; Li Jun; Hu BangQi] Qingdao Inst Marine Geol, Key Lab Marine Hydrocarbon Resource & Geol, Minist Land & Resources, Qingdao 266071, Peoples R China; [Zhao JingTao; Hu BangQi] Chinese Acad Sci, Key Lab Marginal Sea Geol, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China
项目归属: 海洋地质
摘要: 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.
语种: 英语
WOS记录号: WOS:000309350000015
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10307
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Recommended Citation:
Zhao, JT; Li, TG; Li, J; Hu, BQ.Paleoproductivity variations in the southern Okinawa Trough since the middle Holocene: Calcareous nannofossil records,CHINESE SCIENCE BULLETIN,2012,57(30):3917-3922
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文件名: Paleoproductivity variations in the southern Okinawa Trough since the middle Holocene Calcareous nannofossil records.pdf
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