|
|
|
| |
|
|
| 本文已被：浏览 143次 下载 121次 |
码上扫一扫！ |
| 夏秋季泉州湾中部海域潮流和余流的变化特征 |
| 郑斌鑫,温生辉,李九发,何佳,陈楚汉,陈智杰,束芳芳 |
|
|
| (国家海洋局第三海洋研究所，福建厦门361005;华东师范大学河口海岸学国家重点实验室，上海200062) |
|
| 摘要: |
| 在前人大量研究的基础上，通过数据统计、潮流调和分析、低通滤波及谱分析等手段对泉州湾湾中水道上M站3个多月的实测资料进行潮流和余流特征分析.结果表明：该站为规则半日潮流，以半日潮分量M₂占绝对优势；各层涨潮流的主导方向均为WNW向，落潮流主导方向表层为SE一ESE向，实测涨、落潮最大流速分别达151 cm/s和138 cm/s.M站河口环流动力过程非常明显；从表层往底层，余流流向沿顺时针方向从WSW向往NW向偏转；水体在落潮时受潮汐张力的作用，盐度的层化结构逐渐增强，而在涨潮时受潮混合的作用，盐度的层化结构逐渐减弱. |
| 关键词: 物理海洋学 潮流 余流 河口环流 泉州湾 |
| DOI： |
|
| 基金项目:福建省自然科学基金资助项目(2011J05130) |
|
| Characters of tidal and residual current variations in centralQuanzhou Bay in summer and autumn |
| ZHENG Binxin,WEN Shenghui,LI Jiufa,HE Jia,CHEN Chuhan,CHEN Zhijie,SHU Fangfang |
| (Thind Institute ofOceanography,S0A,Xiamen 361005,China;State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200062,China) |
| Abstract: |
| Based on the historical studies and combined with statistics,harmonic analysis,means low-pass filteringand spectal analysis,the characteristics of the tides and residual cuments were analyze with data of more than 3months fom Quanzhou Bay waterwayM station.The result shows that the tidesat the station is regular semidiurnaltide,with a predominantsemidiurnal component M₂.The dominant direction of all rising tide layers are of WNWdirectiom,and the domimant direction of surface ebbing layers are of SE—ESE direction,with the measured riseand ebb maximum flow rates upto 151 cm/s and 138 cm/s,respectively.The estuarine circulation dynamicprocess and vertical circulation is rather clear and evident at the station.From the suface to the bottom,the residu-al stream flows clockwise fom WSW to NW.The tension of water body increases with the mles of ebb tides and sa-limity layer structure that decreases gradually with the flood tide. |
| Key words: physical oceanography tidal current residual current estuarine circulation Quanzhou Bay |
|
|
|
|
|