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首页> 外文期刊>Continental Shelf Research: A Companion Journal to Deep-Sea Research and Progress in Oceanography >Winter mixed layer and its yearly variability under sea ice in the southwestern part of the Sea of Okhotsk
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Winter mixed layer and its yearly variability under sea ice in the southwestern part of the Sea of Okhotsk

机译：鄂霍次克海西南部海冰下的冬季混合层及其年变化

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摘要

Hydrographic observations under sea ice were conducted in the southwestern part of the Sea of Okhotsk for 4 years from 1996 to 1999. Every year a cold mixed layer with near-freezing temperature was distributed from the sea surface to a depth of 150-300 m near the shelf break under sea ice. The thicknesses of the mixed layer and sea ice were largest in 1997. While the depth of the mixed layer was considerably deeper than that of dichothermal water, which is identified as a temperature minimum from spring to fall in this region, the density of water in the mixed layer was equal to or less than that of dichothermal water. It is shown that deepening of isopycnals due to the alongshore component of the wind stress is essential for thickening of the mixed layer. In 1997 the nearly northerly winds, which are usually directed offshore, were more parallel to the coast than those in the other years. Thickening of the mixed layer in 1997 is attributed to this wind condition. The air temperature and wind indicate that the sea-ice production rate was low in 1997, whereas the wind direction was favorable for rafting and ridging. Thus the change in wind direction is proposed As an important factor in determining the thickness of both the mixed layer and the sea ice in this region. (C) 2004 Elsevier Ltd. All rights reserved.
机译：从1996年至1999年，在鄂霍次克海的西南部进行了4年的海冰海底观测。每年，从海表到附近150-300 m的深度分布有接近冻结温度的冷混合层。在海冰下架子破裂。混合层和海冰的厚度在1997年最大。虽然混合层的深度比地热水深得多，后者被确定为该地区从春季到秋季的最低温度，但水的密度却很高。混合层等于或小于双热水的混合层。结果表明，由于风应力的沿岸分量而引起的等深线加深对于混合层的增厚至关重要。在1997年，通常是近海的近北风比往年更平行于海岸。 1997年混合层的增厚归因于这种风况。气温和风向表明，1997年海冰的生产率较低，而风向则有利于漂流和起伏。因此，建议将风向的变化作为确定该区域混合层和海冰厚度的重要因素。 （C）2004 Elsevier Ltd.保留所有权利。

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