中文摘要：

沉积物磁化率已被广泛用于古气候重建，但在黄东海陆架区，其在短时间尺度气候演化中的指示意义仍不明确，原因之一是目前尚缺乏对现代沉积物磁化率空间分布特征的系统研究。本文通过测定黄东海陆架区81个点位表层沉积物的磁化率，得到该区域磁化率的空间分布特征。结果显示，黄海北部磁化率较低，与其物源主要为来自黄河／黄河故道的泥沙有关：黄海南部及东海磁化率较高，为长江口高磁化率物质输入所致；长江口以东远岸（31°～33°N，123°～125°E）的高磁化率区可能受地形控制。因此，在黄东海陆架区不同区域，磁化率反映的环境信息有所差别。本研究可为磁化率在陆架区沉积物物源分析和短时间尺度古气候重建中的应用提供依据。

英文摘要：

Magnetic susceptibility （MS） of sediments has been widely used as an indicator in paleoclimate reconstructions. But its significance is still not clear in short-term climate change studies in the Yellow Sea and East China Sea continental shelf, partly because of the lack of systematically analysis on magnetic susceptibility of the surface sediments. In this study, MS of 81 surface sediment samples from the Yellow Sea and the East China Sea continental shelf were analyzed. The results are as follows： MS values in the northern Yellow Sea, the main source of which is the Yellow River or the Old Yellow River, are lower than that in the southern Yellow Sea and the East China Sea, the main source of which is the Yangtze River. The higher MS in the ＂31° -33°N, 123° -125°E＂ region might be caused by the topography. Therefore, the environmental information indicated by the MS is variable in different regions of the Yellow Sea and the East China Sea continental shelf. These are helpful for using MS in source analyzing and short-term paleoclimate reconstructions in the continental shelf.