钦州金鼓江海域秋季潮流特征分析
Characterization of autumn tide of Jingu River Estuary,Qinzhou
林道宽 1崔力维 1雷学铁 1杨娜1
作者信息
- 1. 自然资源部北海海洋中心,广西北海 536000
- 折叠
摘要
采用短期资料的潮流准调和分析方法,对2020年9月金鼓江近海海域6个站位的25 h同步潮流资料进行分析.分析结果表明:(1)观测期间,各站最大涨潮流流速为0.55 m/s,最大落潮流流速为0.52 m/s;潮流流向为NNE-SSW.(2)观测海区潮流为全日潮流,O1、P1分潮流的椭圆率K'值均较小,往复流特征明显.(3)观测各站位余流流速位于2.7～6.5 cm/s区间范围内,以SE-SW方向为主,表明该海域物质输运为金鼓江输运至外海.(4)金鼓江纳潮仅占钦州湾的5％.
Abstract
With the method of quasi-harmonic analysis of short-term tidal current,we characterized the autumn tide of Jingu River estuary,Qinzhou,using the 25-hour synchronized tidal current data collect-ed at six offshore stations in Sept.2020.During the observation period,the maximum surge tidal cur-rent velocity was 0.55 m/s,and the maximum ebb tidal current velocity was 0.52 m/s.The flow direc-tion was from NNE to SSW.The observed tidal current in the sea area was diurnal,the ellipticity K'value of O1 and P1 tidal current was small,and the characteristics of the reciprocating current was obvi-ous.The residual current velocity each observation station varied between 2.7 and 6.5 cm/s.The cur-rent flowed mainly from SE to SW,indicating that the material transport in this area was from the Jin-gu River to the open sea.The Jingu River tide accounted for only 5％of the Qinzhou Bay.
关键词
潮流/调和分析/潮流椭圆/余流/纳潮量Key words
tide/harmonic analysis/current ellipse/residual current/tidal influx引用本文复制引用
基金项目
广西科技基地和人才专项(桂科AD20238018)
出版年
2024
NETL
NSTL
万方数据