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所研究的YSDP1 0 2钻孔岩心 (33°49.496′N ,1 2 5°45.0 0 9′E)是由韩国能源研究所和中国国土资源部海洋地质研究所于 1 995年 8月联合取自南黄海东南部水深 62m的巨厚泥质沉积区内 ,岩心长 60 65m。通过对岩心沉积物中浮游和底栖有孔虫动物群的分析 ,结合相应的AMS1 4 C测年数据 ,对黄海暖流及与其相伴生的南黄海东南部冷水体的形成及演化进行了初步的探讨。结果表明 ,黄海暖流及与其相伴生的南黄海东南部冷水体形成于距今约640 0日历年前。形成伊始 ,冷水体处于明显的强势状态 ,而暖流的强度却相对较弱 ,这一过程约持续了 2 2 0 0年左右 ,是南黄海东南部巨厚泥质沉积区的主要堆积期。直到距今 42 0 0日历年前后 ,黄海暖流的影响强度开始加强 ,冷水体相对减弱 ,直至达到现代的水文状态。
The YSDP1 0 2 drilled core studied (33 ° 49.496’N, 125 ° 45.0 0 9’E) was jointly obtained from the Korea Institute of Energy and the Institute of Marine Geology of the Chinese Ministry of Land and Resources in August 1995 In the huge muddy sedimentary region at a depth of 62 m in the southeastern part of the southern Yellow Sea, the core length is 60 65 m. Based on the analysis of planktonic and benthic foraminiferal fauna in core sediments and the corresponding AMS1 4 C dating data, the formation and evolution of the warm water in the Yellow Sea and its associated cold water body in the southeastern part of the southern Yellow Sea are preliminary studied Discussion. The results show that the Yellow Sea warm current and the accompanying cold water bodies in the southeastern part of the southern Yellow Sea formed about 640 0 calendar years ago. At the beginning of the formation, the cold water body was obviously strong, while the warm current was relatively weak. This process lasted for about 2000 years and was the main accumulation period of the giant muddy sedimentary area in southeastern South Yellow Sea. Until about 4200 years ago, the intensity of the impact of the Yellow Sea warm current started to strengthen, and the relative weakening of the cold water body until the modern hydrological state was reached.