2012年夏季白令海峡附近海域温盐分布特征分析

发布时间：2018-04-29 12:06

本文选题：白令海峡 + 楚科奇海　；参考：《海洋科学进展》2017年01期

【摘要】：利用中国第五次北极科学考察CTD资料,分析了2012年夏季包括白令海陆架区和楚科奇海在内的白令海峡附近海域水文特征:1)白令海峡南侧的白令海陆架区按照不同的水团性质,可以分为圣劳伦斯岛以南和圣劳伦斯岛以北两个区域。圣劳伦斯岛以南海域,东部有阿拉斯加沿岸水流过,水体垂向混合均匀,具有高温低盐的分布特征。向西在25m深度附近存在温跃层,跃层以下温度分布出现层化现象。西南部陆架区存在低温的白令海陆架水,其下方靠近白令海陆坡区存在高盐的白令海陆坡流水。圣劳伦斯岛以北海域,东部是高温低盐的阿拉斯加沿岸水,西部是低温高盐的阿纳德尔水。2)白令海峡北侧,入流水对楚科奇海环流影响较大,高温低盐的阿拉斯加沿岸水仍沿东侧近岸海域向北运动。西侧是低温高盐的阿纳德尔水,但至69°00′N附近,该低温高盐信号消失,断面层化现象逐渐显著。随着水团继续向北运动,温度逐渐降低,盐度逐渐升高。
[Abstract]:Using the CTD data of the fifth Arctic Scientific Survey of China, the hydrological characteristics of the Bering Strait near the Bering Strait, including the Bering Sea continental shelf and the Chukchi Sea, were analyzed in the summer of 2012. The Bering Sea continental shelf on the south side of the Bering Strait was characterized by different water mass properties. It can be divided into two areas south of St. Lawrence Island and north of St. Lawrence Island. To the south of St. Lawrence Island, there is Alaska coastal water flowing through the east, the water body is mixed evenly vertically and has the characteristics of high temperature and low salt distribution. The thermocline exists westward near the depth of 25m, and the temperature distribution below the cline is stratified. There is a low temperature Bering sea shelf water in the southwest continental shelf, and a high salt flowing water on the Bering sea slope near the Bering sea continental slope. To the north of St. Lawrence Island, in the east is Alaska coastal water with high temperature and low salt, and in the west is Anadell water with low temperature and high salt. 2) the northern side of the Bering Strait. The inflow of water has a great impact on the circulation of the Chukchi Sea. Alaskan coastal waters with high temperature and low salt still move north along the east coast. On the west side is Anadell water with low temperature and high salt, but up to 69 掳00N, the signal of low temperature and high salt disappears, and the stratification of cross section becomes more and more obvious. As the water mass moves northward, the temperature decreases and the salinity increases.
【作者单位】：国家海洋局第一海洋研究所;
【基金】：中央级公益性科研院所基本科研业务费专项资金资助项目——极地溶解氧(水文参数)观测与校正(2014T02和2014G02) 南北极环境综合考察与评估专项——北极物理海洋和海洋气象考察(CHINARE2016-03-01)和北极周边海域物理海洋环境综合分析与评价(CHINARE2016-04-03)
【分类号】：P731.1

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