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利用加权平均偏最小二乘回归方法(WA-PLS)建立了南黄海西北近岸71个表层沉积物样品中的底栖有孔虫组合与夏季底层水盐度(Ss)、夏季底层水温度(Ts)以及冬季底层水温度(Tw)之间的数值转换函数.将3个函数应用于南黄海近岸SY01孔,重建了这一海区3.9 cal.ka BP以来的Ss,Ts以及Tw变化曲线.横向对比结果表明,SY01孔3.9 cal.ka BP以来的Ss和Ts曲线与九仙洞石笋的?18O记录变动基本同步,可以作为东亚夏季风强度变动的可靠指标;而Tw变动曲线与南黄海ZY-2孔的东亚冬季风强度指标也有着良好的对应关系,可以作为冬季风强度变化指标.此次研究结果证实了底栖有孔虫的转换函数是一项具有较大潜在价值的古环境、古气候定量重建工具.
The benthic and foraminifer assemblages in 71 surface sediments from the northwestern coast of the South Yellow Sea, summer bottom water salinity (Ss) and summer bottom water temperature (WA) were established by using the WA-PLS method. Ts) and the temperature of the winter bottom water (Tw), three functions were applied to the SY01 pore of the South Yellow Sea near the shore, and the Ss, Ts and Tw curves were reconstructed since 3.9 cal.ka BP in this sea area. The horizontal comparison results show that the Ss and Ts curves of SY01 with 3.9 cal.ka BP are basically synchronous with the 18OO records of Jiunshen Cave stalagmite, which can be used as a reliable indicator of the intensity change of East Asian summer monsoon. However, the curves of Tw and ZY- The East Asian winter monsoon intensity index of 2 holes also has a good correspondence, so it can be used as an indicator of winter monsoon intensity.The results of this study confirm that the conversion function of benthic foraminifera is an ancient environment with great potential value, Climate quantitative reconstruction tools.