广西科学Issue(4)：345-350,6.
钦州湾潮流场及污染物输运特征的数值研究
Numerical Study on the Characteristics of Tidal Current Field and Pollutant Transport in Qinzhou Bay
摘要
Abstract
[Objective]As an important port in Guangxi,the pollutants in the Qinzhou Bay are in-creased gradually as the rapid development of the port.In order to keep the sustainable develop-ment of the marine ecology in Qinzhou Bay,it is necessary to research on the characteristics of water exchange and pollutant transport.[Methods]A three-dimensional numerical model for tidal current and pollutant transport (in the case of COD)is constructed in this study based on the in situ observation in the fall of 2010.The tidal harmonic constants in the model are dis-tracted from the China Sea tidal model of Oregon State University,and the initial and open boundary value in the pollutant transport model is derived from the observed results in the fall of 2010.[Results]The model results are consistent with the observations.And it can be conclu-ded that the average periods of flood and ebb tides were 11.4h and 8h,respectively,corresponding to that the tidal speed averaged in the ebbtide was larger than that in the flood tide.Addi-tionally,the average tidal range in Qinzhou Baywas about 2.8m whereas the maximum tidalrange could be up to 4.25m.And the averagetidal volume was about 10.8×108 m3.The halfcycle of the water exchange between QinzhouBay and outside ocean was about 7d,whereas itneeded about 28d to refresh 80% water in the bay.On the other hand,the COD concentration became larger as it draw closer to the northernshore,and the maximum hourly COD concentration was about 1.27 mg·L-1.After the recla-mation engineering of the bonded port in Qinzhou Bay,the COD concentration in the northernand western parts of Jingujiang Bay increased about 20% and 10%,respectively.[Conclusion]The reclamation engineering of the bonded port in Qinzhou Bay of Guangxi has large effect onthe distribution of pollutant concentration in Jingujiang Bay.关键词
钦州湾/COD/围填海工程/数值模型Key words
Qinzhou Bay/COD/reclamation engineering/numerical model (ECOMSED)分类
海洋科学引用本文复制引用
高劲松,陈波,陆海生,庄军莲,董德信..钦州湾潮流场及污染物输运特征的数值研究[J].广西科学,2014,(4):345-350,6.基金项目
广西围填海工程建设对水动力的影响与评估体系研究项目（桂科攻1355007？13），广西自然科学基金重大项目（2012GXNSFEA053001），广西科学院基本科研业务费项目（13YJ22HY06）资助。 （）
