Impact of cooling on the water mass exchange of Agulhas rings in a high resolution ocean model
Impact of cooling on the water mass exchange of Agulhas rings in a high resolution ocean model
复制标题
高分辨率海洋模型中冷却对厄加勒斯环水质量交换的影响
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
A. Coward
中科院分区：
文献类型：
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作者：
J. Donners;S. Drijfhout;A. Coward
在一个高分辨率的全球海洋模式中，利用拉格朗日粒子跟踪技术，研究了三个阿古拉斯环的水渗漏。一个半径达140公里、深度达800米的碗状环形边界将快速和缓慢泄漏区域分开。Agulhas环水的稀释度一般随深度增加，但浅的二次循环增强了150米以上的渗漏。强烈的地表冷却使赤道压力梯度发生变化，而赤道压力梯度又被亚惯性运动所平衡，从而形成了这种浅层的翻转环流。
The leakage of water from three Agulhas rings has been studied in a high resolution global ocean model using a Lagrangian particle following technique. A bowl shaped ring boundary that reaches a radius of 140 km and a depth of 800 m separates regions of fast and slow leakage. The dilution of Agulhas ring water generally increases with depth, but a shallow secondary circulation enhances leakage in the upper 150 m. Strong surface cooling upsets the horizonal pressure gradient which is balanced by subinertial motions that act to form this shallow overturning cell.