粤西阳江海域夏季海流特征分析  

Analysis of summer current characteristics in Yangjiang sea area of Western Guangdong

作　　者：曹永港 冯砚青 欧阳永忠 陈宜展 廖世智 刘同木 CAO Yonggang;FENG Yanqing;OUYANG Yongzhong;CHEN Yizhan;LIAO Shizhi;LIU Tongmu(South China Sea Marine Survey and Technology Center,State Oceanic Administration,Guangzhou 510300,China;Key Laboratory of Marine Environmental Survey Technology and Application,Ministry of Natural Resources,Guangzhou 510300,China)

机构地区：[1]国家海洋局南海调查技术中心,广东广州510300 [2]自然资源部海洋环境探测技术与应用重点实验室,广东广州510300

出　　处：《海洋测绘》2022年第3期27-32,共6页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(42174013);广东省海洋经济发展(海洋六大产业)专项资金项目(粤自然资合[2020]022号,[2021]38号);国家海洋局南海分局海洋科学技术局长基金(180106)。

摘　　要：为提高对粤西区域海洋动力特征的认识,基于阳江沙扒南部海域夏季全潮海流实测数据,采用潮流准调和分析方法,对其水动力空间特征及潮流性质进行综合分析。结果表明,夏季小潮期海流主要流向为E,与粤西西向沿岸流方向相反;中、大潮期海流主要流向为SW,与粤西沿岸流流向一致;最大海流流速均出现在S2站表层。观测期间逆时针旋转流特征明显。同时,潮流主要类型为不规则半日潮。夏季各站层的分潮流运动方向为W-E,底层余流流速小于表中层流速。观测期余流具有风海流的性质。研究结果可为该海域工程建设提供技术支撑,并为该海域科学研究提供基础数据。In order to improve the understanding of the regional marine dynamic characteristics in western Guangdong,the spatial characteristics of hydrodynamics and tidal current properties were comprehensively analyzed based on the measured data of summer full tide current in southern sea area of Shapa,Yangjiang by using the method of quasi⁃harmonic analysis.The results showed that the main flow direction of current in summer neat tide period was E,which was opposite to the westward coastal current in western Guangdong;The main current flow direction in the middle and spring tides was SW,which was consistent with the coastal current flow direction in western Guangdong.The maximum current velocity appeared on the surface of S2 station.During the observation period,the tidal current was obviously characterized by counterclockwise rotating flow.The main type of tidal current was irregular semidiurnal tide.In summer,the direction of component tidal current of each station layer was W⁃E,and the bottom residual current velocity was less than the surface middle current velocity.The residual current in the observation period has the nature of wind current.The research results provide technical support for engineering construction and basic data for scientific research in this sea area.

关 键 词：海流观测 观测数据 潮流性质 准调和分析 水动力特征 沙扒南部海域 

分 类 号：P229.7[天文地球—大地测量学与测量工程]