西北太平洋MD06-3054孔浮游有孔虫表层海水温度估算

陈双喜; 李铁刚; 南青云; 唐正; 仇晓华

doi:10.3724/SP.J.1140.2011.03061

西北太平洋MD06-3054孔浮游有孔虫表层海水温度估算

陈双喜^1,2,
李铁刚¹,
南青云¹,
唐正^1,2,3,
仇晓华^1,2

1 中国科学院海洋研究所, 中国科学院海洋地质与环境重点实验室, 青岛 266071;
2 中国科学院研究生院, 北京 100049;
3 青岛海洋地质研究所, 国土资源部海洋油气资源与环境地质重点实验室, 青岛 266071

基金项目:

国家自然科学基金项目(41076030,40906038)

国家重点基础研究发展规划项目(2007CB815903)

中国科学院知识创新工程项目(KZCX2-YW-221)

详细信息

作者简介:
陈双喜(1982-),男,博士生,主要从事古海洋与古环境研究,E-mail:sxchen128@126.com

中图分类号: P736.2
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出版历程
- 收稿日期: 2011-02-02
- 修回日期: 2011-04-22

RECONSTRUCTION OF SEA SURFACE TEMPERATURE USING PLANKTONIC FORAMINIFERA FROM CORE MD06-3054 IN THE NORTHWESTERN PACIFIC

1 Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071;
2 Graduate University of Chinese Academy of Sciences, Beijing 100049;
3 Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Ministry of Land and Resources of China, Qingdao 266071

摘要

摘要: 在古海洋学研究中,常用浮游有孔虫来恢复表层海水温度(SST),然而基于浮游有孔虫恢复SST的这些方法之间存在一定的差异。为了说明各方法的特点,在浮游有孔虫鉴定和浮游有孔虫表层种Globigerinoides ruber Mg/Ca比值测试的基础上,分别利用转换函数FP12-E,现代类比(Modern Analog Technique,MAT)和Mg/Ca比值法对西北太平洋北赤道流分叉处MD06-3054孔中记录的末次冰期以来的SST进行了估算。分析发现:(1)转换函数FP12-E不适用于该孔;(2)该孔中MAT法估算的末次冰期到冰后期SST的变化小于Mg/Ca比值法得到的结果;(3)考虑到浮游有孔虫产量的季节变化,Mg/Ca比值法得到的SST_Mg/Ca末次冰期到冰后期的变化可能偏大。尽管如此,相对于MAT等古生态学方法,Mg/Ca比值法受到的影响因素更少,若能对浮游有孔虫的季节产量等方面加以校正,将会得到更准确的结果。
- 浮游有孔虫 /
- 表层海水温度(SST) /
- 转换函数 /
- 现代类比(MAT) /
- Mg/Ca比 /
- 西北太平洋
Abstract: In paleoceanographic research,sea surface temperature (SST) is usually reconstructed with planktonic foraminifera.Results from different methods are diverse.In order to better understand the difference of these methods,the authors reconstructed the SST since the last glacial using the methods of transfer function FP12-E,Modern Analog Technique (MAT),and Mg/Ca ratios with samples from the core MD06-3054,which is located at the bifurcation of North Equatorial Current in the northwestern Pacific.The SST was recovered by counting planktonic foraminiferal fauna and measuring the Mg/Ca ratios of surface dweller Globigerinoides ruber (white,G.ruber in short).It is found that (1) the method of transfer function FP-12E is not applicative in this case; (2) the rising of SST from the last glacial to the post glacial stage reconstructed with MAT is smaller than that reconstructed from the Mg/Ca ratios in core MD06-3054; (3) take into consideration the production change of planktonic foraminifera tests with seasons,the increasing of the SST_Mg/Ca calculated from Mg/Ca ratios may larger than the changes in SST_A.Even so,comparing with the palaeoecological methods (such as MAT),the geochemical method of Mg/Ca ratios has fewer affecting factors and may provide more accurate data if calibration is made for seasonal productivity change of planktonic foraminifera.
- planktonic foraminifera /
- sea surface temperature (SST) /
- transfer function /
- modern analog technique (MAT) /
- Mg/Ca ratio /
- the northwestern Pacific

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