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利用α多道能谱仪对1992年5月采自南黄海的5个箱式岩芯中的210Pb放射性活度进行测定;利用X射线荧光能谱测定表层沉积物中的化学元素Ca,Sr,Fe,Ti和Cu。结果表明,210Pb含量随岩芯深度垂直分布、沉积速率及特征元素含量的变化具有地区性的差异。南黄海现代高速沉积区的沉积速率随黄海沿岸流向逐渐减少。南黄海中部泥区沉积速率较低,沉积环境稳定。因此,210Pb垂直分布的差异和化学元素含量的变化潜在地揭示了南黄海现代沉积物的起源和沉积环境。
The radioactive activity of 210Pb in 5 box cores collected from the South Yellow Sea in May 1992 was measured by using α multi-channel energy dispersive spectrometer. The chemical elements Ca and Sr in surface sediments were measured by X-ray fluorescence spectrometry. Fe, Ti and Cu. The results show that there is a regional difference in the 210Pb content with the vertical distribution of core depth, deposition rate and the content of characteristic elements. The deposition rate in the modern high-speed sedimentary area of the southern Yellow Sea decreases with the coast of the Yellow Sea. Sediment deposition rate in the southern Yellow Sea mud zone is low and the depositional environment is stable. Therefore, the variation of 210Pb vertical distribution and the change of chemical element content potentially revealed the origin and sedimentary environment of modern sediments in the southern Yellow Sea.