Mechanisms controlling dissolved iron distribution in the North Pacific : A model study
Mechanisms controlling dissolved iron distribution in the North Pacific : A model study
复制标题
控制北太平洋溶解铁分布的机制：模型研究
DOI：
10.1029/2010jg001541
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
K.
中科院分区：
文献类型：
--
作者：
Misumi;K.
利用对北太平洋西北部氯氟烃（CFCs）的模拟，研究了鄂霍次克海及其周围沃茨的通风。我们使用了一个海洋环流模式与海冰模式相结合。该模型再现的CFCs的分布与观测值相似，并表明潮汐混合沿着千岛群岛和盐水拒绝通风的沃茨和周围的鄂霍次克海的重要性。为了阐明每个过程的作用，进行了排除两个过程中的一个的数值实验。结果表明，在鄂霍次克海西部，海水排驱作用使CFCs沿密集陆架水路径进入中间层，深度可达沿着200-400 m，但几乎不进入其它区域和层。另一方面，潮汐混合将CFC输送到整个鄂霍次克海的中层和深层。我们的结论是，潮汐混合比盐水拒绝对冬季混合层以下的层的通风有更大的影响。
Ventilation of waters in and around the Sea of Okhotsk was investigated using simulations of chlorofluorocarbons (CFCs) in the northwestern North Pacific. We used an ocean general circulation model coupled with a sea ice model. The model reproduces the distributions of CFCs similar to observed values and indicates the importance of tidal mixing along the Kuril Islands and brine rejection to ventilation of waters in and around the Sea of Okhotsk. To clarify the role of each process, numerical experiments excluding one of the two processes were carried out. Results show that brine rejection transports CFCs into the intermediate layer as deep as 200-400 m along the path of dense shelf water in the western Sea of Okhotsk, but hardly to other areas and layers. On the other hand, tidal mixing transports CFCs into the intermediate and deeper layers throughout the Sea of Okhotsk. We conclude that the tidal mixing has a greater influence than brine rejection on the ventilation of layers below the winter mixed layer.