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,O_(1)、P_(1)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%。
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 collected at six offshore stations in Sept.2020.During the observation period,the maximum surge tidal current velocity was 0.55 m/s,and the maximum ebb tidal current velocity was 0.52 m/s.The flow direction was from NNE to SSW.The observed tidal current in the sea area was diurnal,the ellipticity K′ value of O_(1) and P_(1) tidal current was small,and the characteristics of the reciprocating current was obvious.The residual current velocity each observation station varied between 2.7 and 6.5 cm/s.The current flowed mainly from SE to SW,indicating that the material transport in this area was from the Jingu River to the open sea.The Jingu River tide accounted for only 5% of the Qinzhou Bay.
作者
林道宽
崔力维
雷学铁
杨娜
LIN Daokuan;CUI Liwei;LEI Xuetie;YANG Na(North Sea Marine Center,Ministry of Natural Resources,Beihai 536000,China)
出处
《海洋湖沼通报》
CSCD
北大核心
2024年第1期118-123,共6页
Transactions of Oceanology and Limnology
基金
广西科技基地和人才专项(桂科AD20238018)。
关键词
潮流
调和分析
潮流椭圆
余流
纳潮量
tide
harmonic analysis
current ellipse
residual current
tidal influx
