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楚科奇海夏季潮流和余流观测研究

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Keywords: 楚科奇海,潮流和余流,斜压流

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Abstract:

根据2008年8月5日至9月7日在楚科奇海布放的一套锚碇潜标观测系统(71°40.024'N,167°58.910'W)获得的海流剖面资料研究了该海区的海流分布特征,重点探讨了潮流的垂向结构、余流剖面特征及海流的斜压性。结果表明:(1)该海域主要分潮为半日潮M1,S2和N2,近日分潮O1,天文分潮MM和MSF,其中以M2为代表的半日分潮最为显著,所有半日分潮的潮流椭圆均呈逆时针方向旋转;(2)整个测流剖面内平均余流呈东北偏北流向,平均余流大小为6.6cm/s;(3)各层余流存在显著的垂向同步的周期性变化;(4)在8~11m范围内平均斜压动能较强,而18m以下平均斜压动能较弱,在11~18m范围内由上而下平均斜压动能不断减弱,平均斜压余流逐渐变小。

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