Halocline structure in the Canada Basin of the Arctic Ocean
Halocline structure in the Canada Basin of the Arctic Ocean
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DOI：
10.1029/2004gl021358
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发表时间：
2005-02
影响因子：
5.2
通讯作者：
K. Shimada;M. Itoh;S. Nishino;F. McLaughlin;E. Carmack;A. Proshutinsky
中科院分区：
文献类型：
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作者：
K. Shimada;M. Itoh;S. Nishino;F. McLaughlin;E. Carmack;A. Proshutinsky
我们利用 2002-2003 年的水文数据研究了加拿大盆地太平洋和北极东部盐跃层水域的种类和空间分布。加拿大盆地的盐跃层结构与北极东部盐跃层不同，因为它包括较新鲜的太平洋冬季水域，形成“冷盐跃层”，位于北极东部原产地较低的盐跃层水域之上。然而，加拿大盆地的halostad结构在空间上并不均匀，并且取决于水源的路径和历史。太平洋冬季，由于海冰的形成，通过白令海峡进入的水变咸，而这又取决于冰间湖的出现和分布。特别是，来自楚科奇海东部的咸水形成厚厚的盐层，导致加拿大盆地南部的等盐线下降。该低压影响海洋波弗特环流的温盐结构。
We examine the varieties and spatial distributions of Pacific and Eastern Arctic origin halocline waters in the Canada Basin using 2002–2003 hydrographic data. The halocline structure in the Canada Basin is different from the Eastern Arctic halocline because it includes fresher Pacific Winter Waters that form a “cold halostad” which lies above the Eastern Arctic origin lower halocline waters. The structure of the halostad in the Canada Basin, however, is not spatially uniform, and depends on the pathway and history of the source water. Pacific Winter Water entering through the Bering Strait becomes salty due to sea ice formation and this, in turn, is dependent on the occurrence and distribution of polynyas. In particular, saline water from the eastern Chukchi Sea forms thick halostad and causes depression of the isohalines in the southern Canada Basin. This depression influences thermohaline structure of the oceanic Beaufort Gyre.