Masqué Pere, Cochran J Kirk, Hebbeln Dierk, Hirschberg David J, Dethleff Dirk, Winkler Amelie
Marine Sciences Research Center, Stony Brook University, Stony Brook, New York 11794-5000, USA.
Environ Sci Technol. 2003 Nov 1;37(21):4848-54. doi: 10.1021/es034176n.
Atom ratios of 240Pu to 239Pu in bottom sediments from the Fram Strait are used to provide evidence for the long distance dispersion of Pu in the Arctic Ocean. In particular, low (<0.18) 240Pu/239Pu ratios indicate that plutonium from sources in the Kara Sea and Novaya Zemlya is transported across the basin toward the North Atlantic. The results have implications for the ability of sea ice to incorporate, intercept, and transport contaminants in the Arctic Ocean. They demonstrate that the fates of sea ice and associated contaminants in the Arctic Ocean are closely coupled, with the release of the particulate load and associated chemical species occurring in principal sea ice ablation areas such as the Fram Strait.
弗拉姆海峡底部沉积物中钚 - 240与钚 - 239的原子比，被用于为钚在北冰洋的远距离扩散提供证据。特别是，低（<0.18）的钚 - 240/钚 - 239比值表明，来自喀拉海和新地岛源区的钚被输送穿过该盆地，流向北大西洋。这些结果对海冰在北冰洋中吸收、拦截和运输污染物的能力具有启示意义。它们表明，北冰洋中海冰和相关污染物的归宿紧密相连，颗粒负载及相关化学物质的释放主要发生在诸如弗拉姆海峡这样的主要海冰消融区域。
