Evolutionary Paleoceanographic Characteristics in the Northern South China Sea since Late Pleistocene: Evidence from Core N-31
详细信息
- 责任者：Li Xiaoyan (Key Lab. of Marine Sedimentology and Environmental Geology ; SOA ; Qingdao 266061 ; China) ; Jian Zhimin
- 刊名：Acta Sedimentologica Sinica
- 出版年：2011
- 卷期：29(3)
- 关键词：晚更新世 ; Upper Pleistocene ; 海洋环境 ; marine environment ; 海南 ; Hainan Province
- 页码：p.572-579
- 图表：7 illus., 2 tables, 28 refs.
- 分类号：1400
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
In this paper, a sediment Core N-31 located in the northern South China Sea had been researched including quantitative analysis and identification of planktonic foraminifera, oxygen and carbon isotopes, carbonate content and grain size, AMS14C dating, sea surface temperature and thermocline depth calculated by paleoecological transfer function. The following conclusions have been attained: 1) the bottom age of Core N-31 was about 55 ka B.P. and this core accepted deposition since marine isotope stage 3; 2) planktonic foraminifera species analysis showed that changes in abundance as the glacial-interglacial cycles and change; 3) the sea surface temperature (SST) estimated by the transfer function FP-12E shows that the summer SST ranges from 27.0 to 29.6 ℃ and the winter SST from 18.2 to 27.0 ℃; and 4) the thermocline data show no obvious fluctuations during MIS3-MIS2, but the depth deepened gradually during the transitional period from the glacial to the postglacial.