Structure of Haida Eddies and Their Transport of Nutrient from Coastal Margins into the NE Pacific Ocean

Frank Whitney; Marie Robert

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Structure of Haida Eddies and Their Transport of Nutrient from Coastal Margins into the NE Pacific Ocean

机译：海达涡流的结构及其营养物质从沿海边缘向东北太平洋的输送

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Anticyclonic mesoscale eddies form near shore each winter in the Gulf of Alaska. One site near the Queen Charlotte Islands is shown to produce eddies that transport from 3000 to 6000 km3 of coastal water up to 1000 km westward. Eddies carry shelf nutrients either into the high nutrient, low chlorophyll waters of the NE Pacific, or in a more southerly direction into seasonally nitrate depleted waters. A large eddy sampled in summer 1998 was found to have elevated particulate levels on its perimeter. Nitrate supplied to the euphotic zone by this eddy during its natal summer is estimated to be three times greater than the usual seasonal nutrient transport in the Gulf of Alaska.

机译：每年冬季，阿拉斯加湾的海岸附近都会形成反气旋中尺度涡流。夏洛特皇后群岛附近的一个站点显示出会产生涡流，这些涡流从3000至6000 km3的沿海水向西输送1000公里。涡流将架子养分带入东北太平洋的高养分，低叶绿素水，或向更南的方向带入季节性硝酸盐枯竭的水。 1998年夏季采样的一个大型涡流发现其周边的颗粒物水平升高。据估计，该涡流在刚出生的夏季提供给富营养区的硝酸盐比阿拉斯加湾通常的季节性营养运输高出三倍。

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《Journal of oceanography》 |2002年第5期|共9页
作者
Frank Whitney; Marie Robert;
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中图分类海洋学;
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Structure of Haida Eddies and Their Transport of Nutrient from Coastal Margins into the NE Pacific Ocean

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