资源环境科技发展态势分析平台

We analyzed neodymium (Nd) concentrations and isotopic compositions (epsilon(Nd)) in seawater of the northwestern Pacific marginal seas and adjacent waters. The values of epsilon(Nd) in the surface water increase from the Changjiang River Estuary to the outer shelf. This increase in epsilon(Nd) from -12.8 to -7.7 is mainly influenced by the terrestrial source and water mixing. Changjiang Diluted Water contributes more than 20% of the volumetric flux in most regions' surface waters during our investigation. The contribution of Kuroshio Subsurface Water to the Changjiang River Estuary is more than 80% in the southern study area. Estimated water contributions from the East China Sea to the northwestern Pacific and the Sea of Japan are approximately 6% and 10%, respectively. These results imply that the East China Sea is a significant source of material to the northwestern Pacific.