• 责任者：Zhou Chao (State Key Laboratory of Marine Geology ; Tongji University ; Shanghai 200092 ; China) ; Jin Haiyan
• 刊名：Quaternary Sciences
• 出版年：2011
• 卷期：31(2)
• 关键词：晚第四纪 ; Late Quaternary ; 古生产力 ; paleoproductivity ; 西太平洋 ; West Pacific
• 页码：p.276-283
• 图表：5 illus., 56 refs.
• 分类号：1400
• issnNo：ISSN1001-7410
• isbnNo：CN11-2708/P

Research on paleo-productivity has received much attention because of the possible link between atmospheric CO₂ concentration and organic productivity in the oceans. It has been found that the changes of paleo-productivity in the WEP,which could be indicated by the ln(Ba/Ti) and ln(Ca/Ti) ratios, displayed clear glacial-interglacial and processional cycles during the last 370 ka. The average value of ln (Ba/Ti) ratio was 13 ％ higher during interglacial stages than during glacial stages, indicating that the paleo-productivity was high during interglacial stages and vice versa. Moreover, the δ¹⁸ O difference between surface dwelling species G.ruber and thermocline dwelling species P.obliquiloculata, Δδ¹⁸ O_(P-G), which was usually interpreted to reflect changes of the thernocline depth, fluctuated around 1.0 ‰ throughout the past 370 ka without a clear glacial-interglacial pattern.