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对南海东、西两侧两个柱状样（１７９２８，１７９５４）浮游有孔虫的定量分析，采用浮游有孔虫转换函数，计算得到两区近 ２００ ｋａ来表层海水温度和温跃层的变化历史．吕宋岛西北部（１７９２８柱状样），冰期表层海水低温、浅温跃层；南海西部（１７９５４柱状样）却在间冰期时出现表层海水低温、浅温跃层的状况．两区温度、温跃层的这种变化为上升流所致，而上升流的强、弱变化又与东亚季风的演化相联系．根据现代东亚冬、夏季风分别在东、西两侧引起上升流的规律，可推断冰期时冬季风加强，间冰期时夏季风加强．
Quantitative analysis of two columnar (17928, 17954) planktonic foraminifera on the east and west sides of the South China Sea using the planktonic foraminifera conversion function, the history of the surface seawater temperature and thermocline over the past 200 ka . In the northwestern part of Luzon (column 17928), the surface seawater in the glacial stage is characterized by low temperature and shallow thermocline; while in the western South China Sea (column 17954), the surface seawater has a low temperature and shallow thermocline during the interglacial period. This change in temperature and thermocline in the two regions is caused by the upwelling, while the strong and weak upwelling changes are related to the evolution of the East Asian monsoon. According to the law of the upwelling caused by the winter and summer monsoons in East and West, respectively, it can be inferred that the winter monsoon strengthened during the glacial period and the summer monsoon strengthened during the interglacial period.