Development of analytical technique for environmental change using isotopes of organometals

西亚北极太平洋(WSP)的初级生产力非常高，很可能是因为包括养分和铁在内的陆源输入。为了揭示铁的来源和迁移过程，本研究使用了铁的稳定同位素。结果表明：阿穆尔河溶解铁大部分化学沉淀和沉积在河口，沉积的颗粒铁再悬浮并流入鄂霍次克海中水，沿库页岛东岸向南输送，部分进入WSP。

Primary productivity is very high in the western subarctic Pacific (WSP), most likely because of terrigenous input including nutrients and iron. To reveal the origin and transport processes of the iron, stable isotopes of iron were used in this study. Results of the isotope ratios are summarized as follows: Most of dissolved iron from the Amur River chemically precipitates and deposits in the estuary, the deposited particulate iron is resuspended and flows out to the Okhotsk Sea intermediate water, and it is transported southward along the east coast of Sakhalin Island and partly flows out into the WSP.