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当前位置: 首页 > 文章 > 三沙湾潮流特征数值模拟研究 渔业研究 2018 (6) 413-424
Position: Home > Articles > Numerical research of the tidal currents in Sansha Bay Journal of Fisheries Research 2018 (6) 413-424

三沙湾潮流特征数值模拟研究

作  者：
林建伟;游远新;刘国昕
单  位：
福建省水产研究所
关键词：
三沙湾;潮流;数值模拟
摘  要：
本文运用二维水动力数值模型,对三沙湾研究区域的潮流场进行模拟计算,研究了2014年三沙湾岸线条件下的潮流场分布特征,同时,探讨了1974年岸线与地形条件下的三沙湾潮流场情况,最后对两个年度的潮流特征进行对比分析。结果表明:三沙湾内潮流为往复流,受地形的影响较为明显,流速分布反映了三沙湾的地形特征;湾内深槽流速较大,浅滩流速较小,口门及深槽流速一般大于1. 0 m/s,其余海域流速一般小于0. 5 m/s;落潮流总体大于涨潮流;多年来的围填海活动,对三沙湾的岸线地形及流速影响较为明显,除个别区域的流速变大外,大部分区域的流速变小,减幅为15%～30%,对流向影响较小。
译  名：
Numerical research of the tidal currents in Sansha Bay
作  者：
LIN Jianwei;YOU Yuanxin;LIU Guoxin;Fishery Research Institute of Fujian;
单  位：
LIN Jianwei%YOU Yuanxin%LIU Guoxin%Fishery Research Institute of Fujian
关键词：
Sansha Bay;;tidal currents;;numerical simulation
摘  要：
Applying the 2D hydrodynamic model to simulate the tide currents in the study area of Sansha Bay,this paper investigated the distribution of currents based on the topography in 2014,and discussed the situation in 1974 on different environment. The present study also analyzed the characters of tide currents between1974 and 2014. As the results revealed,the currents in Sansha Bay was rectilinear flow,whose direction was dramatically affected by the topography and which reflected the character of terrain in Sansha Bay. The magnitude in deep groove or bay mouth was larger than that in shallow and was over 1. 0 m/s,but less than0. 5 m/s in others. Generally,the magnitude in ebb tide was larger than that in flood tide. By contrast,the land reclaim over several years has affected the bathymetry and currents in Sansha bay,excepting the magnitude increasing in some area. Most of the areas decreased with ranging from 15% to 30%,but with less change for direction.

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