渤海中部海域表层潮流和余流特征分析

发布时间：2018-01-10 20:23

本文关键词：渤海中部海域表层潮流和余流特征分析　出处：《海洋通报》2017年02期 　论文类型：期刊论文

【摘要】：利用2014年各月浮标观测得到的表层海流资料,对其进行调和分析,基于调和分析结果对渤海中部潮流和余流特征进行研究。结果表明:渤海中部大部分海域潮流性质属于不正规半日潮性质。渤海中部水深较浅,浅水分潮的影响不可忽略,其中M4分潮的影响更为显著;潮流运动形式除西部和北部两个浮标点为往复流以外其余均是旋转流,旋转方向均为逆时针;渤海中部实测涨落潮流除最北端的2号浮标点较强以外,其他均小于75 cm/s。涨落潮流的强度较一致。渤海中部的余流除4号浮标点以外均为偏向北的流动,表层月均余流的季节变化不太明显。本文推测渤海中部环流的流动特征为顺时针。冬季渤海中部表层余流受制于风的作用,春、夏季某些区域余流受到风的影响较大,是潮汐余流和浅海风海流的合成。而靠近岸边的1号浮标点以潮余流为主。
[Abstract]:Using surface current data obtained in 2014 the buoy observations, for harmonic analysis of the harmonic analysis results of central Bohai characteristics of tidal current and residual current were studied. The results showed that: Based on the central Bohai sea tide most belongs to the irregular semidiurnal tide. Bohai Department of shallow water depth, shallow water tidal effects can not be ignored the influence of M4 tide, tidal current movement is more significant; in addition to the two point north and west to buoy the reciprocating flow is more than the outside rotating flow, the direction of rotation is counterclockwise; the measured fluctuation trend in central Bohai except for the north end of the buoy No. 2 strong points, the other is less than 75 cm/s. fluctuation trend the intensity is the same. The residual flow in central Bohai except No. 4 buoy points are partial to North flow, surface average monthly flow more than seasonal variation is not obvious. We speculate that the flow characteristics of central Bohai circulation along the time In winter, the surface residual current in the middle part of Bohai is governed by the action of wind. In the spring and summer, the residual current in some areas is greatly influenced by wind. It is the synthesis of tidal residual current and shallow sea wind current. And the number 1 buoy near the shore is dominated by tidal residual current.

【作者单位】：国家海洋信息中心;
【基金】：关岛中南部气象资料等抢救与标准化处理(GASI-01-01-02-04) 海洋公益性行业科研专项(基于数字海洋的资料整合及其共享服务应用示范)子任务:海洋水体环境资料整合处理技术研究与产品研制(201305029-01)
【分类号】：P731.2
【正文快照】： 渤海是中国的内海,是东北、华北、西北和华东部分地区的主要出海口,具有重要的经济和生态作用,研究其潮流和环流特征具有重要的意义。渤海的实测潮流资料较多,但主要集中在渤海湾、辽东湾和莱州湾及近岸海域,渤海中部较长期的实测流资料难以获得。近年来关于渤海中部潮汐潮流

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