南海海水颗粒物和沉积物的Fe、Cu和Zn同位素地球化学的开题报告.docx

南海海水颗粒物和沉积物的Fe、Cu和Zn同位素地球化学的开题报告 【摘要】 南海位于西太平洋，是世界上较大的被动大陆边缘海，受到来自陆地和海洋的多种物质输入，其中颗粒物和沉积物中的Fe、Cu和Zn元素是研究的重点。同位素地球化学已经被广泛应用于研究海洋沉积物的来源和沉积环境。本文将针对南海海水颗粒物和沉积物中Fe、Cu和Zn同位素地球化学进行研究。首先，将分析南海不同深度、不同季节的海水颗粒物中的Fe、Cu和Zn同位素组成，研究其空间变化与季节变化规律；其次，将对南海沉积物的Fe、Cu和Zn同位素进行研究，使用多种数学方法（如中位数和变异系数等）对同位素组成进行分析，并结合地球化学特征和古环境分析结果探讨其沉积来源和环境。 【关键词】南海；海水颗粒物；沉积物；同位素地球化学；Fe；Cu；Zn 【Abstract】 The South China Sea is located in the western Pacific Ocean and is one of the largest passive continental margin seas in the world. It is subjected to various materials inputs from land and ocean, and the Fe, Cu and Zn elements in the particles and sediments have been an important research focus. Isotope geochemistry has been widely applied to investigate the source and deposition environment of marine sediments. This paper will mainly focus on the Fe, Cu and Zn isotope geochemistry of South China Sea water particles and sediments. Firstly, the Fe, Cu and Zn isotope compositions in water particles at different depths and seasons will be analyzed to investigate the spatial and seasonal variations. Secondly, the Fe, Cu and Zn isotope compositions of South China Sea sediments will be studied, and various mathematical methods (e.g. median and coefficient of variation) will be used to analyze the isotope compositions, combined with geochemical characteristics and paleoenvironmental analysis to discuss their sediment sources and environments. 【Keywords】South China Sea; water particles; sediments; isotope geochemistry; Fe; Cu; Zn