Ventilation of North Pacific intermediate waters: The role of the Alaskan Gyre
Ventilation of North Pacific intermediate waters: The role of the Alaskan Gyre
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北太平洋中间水域的通风：阿拉斯加环流的作用
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
R. Fine
中科院分区：
文献类型：
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作者：
K. A. V. Scoy;D. Olson;R. Fine
水文数据，氚数据和位涡计算表明，虽然北太平洋中层水形成在西北部，阿拉斯加环流可能是一个额外的通风网站。拟议的通风量是量化的垂直柱氚库存，这表明在阿拉斯加环流的氚超过0.08公斤。对水柱中储存的能量以及风和浮力作用力的评估表明，在冬季条件下，可以向系统中注入足够的能量，迫使26.80 σθ在阿拉斯加环流中露出水面。模型结果表明，相对有限的露头在时间和空间（几十天和几百公里的直径）可以解释过量的氚。
Hydrographic data, tritium data, and potential vorticity calculations suggest that although North Pacific Intermediate Water is formed in the northwest, the Alaskan Gyre might be an additional ventilation site. The proposed ventilation is quantified by a vertical column tritium inventory, which indicates an excess of 0.08 kg of tritium in the Alaskan Gyre. An evaluation of the energy stored in the water column and of wind and buoyancy forcing shows that during winter conditions enough energy can be pumped into the system to force 26.80 σθ to outcrop in the Alaskan Gyre. Model results suggest that relatively limited outcrops in time and space (tens of days and several hundred kilometers in diameter) can account for the excess tritium.