Distribution and variation of source water components in intermediate layer in the mixed water region revealed by multiple tracer analysis

为了揭示在Oyashio和混合水域的中间层的水团分布和循环，一个新的方法来估计源沃茨之间的混合比，形成了观察水，并应用于温度，盐度，和溶解氧的数据在那里观察到的研究船和剖面浮标。此外，还利用观测到的海流数据等检查了源沃茨的体积输送。结果，定量地揭示了鄂霍次克海的水进入混合水区，并在上中层有相对较多的体积输送（26.7-27.0σ_θ），而来自西北太平洋副北极环流的水则在低层流向这里（27.0-27.3σ_θ），体积输送量相对较大。

In order to reveal the water mass distribution and circulation in the intermediate layer in the Oyashio and mixed water regions, a new method to estimate the mixing ratio among the source waters which form the observed water there was developed and applied to the temperature, salinity, and dissolved oxygen data observed there by our research vessel and profiling floats. Also, the volume transports of the source waters were examined using the observed ocean current data etc. As a result, it is quantitatively revealed that the water originated from the Okhotsk Sea flows into mixed water region with relatively more volume transport in the upper intermediate layer (26.7-27.0σ_θ) whereas the water originated from the subarctic gyre in the northwestern Pacific flows there in the lower layer (27.0-27.3σ_θ) with relatively more volume transport in contrast.