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为研究渤海湾岸线对近岸海域水质的影响,本研究首先阐述了2003、2010和2011年的渤海湾海岸线变迁情况,采用数值模拟的方法研究了由岸线变迁引起的渤海湾水动力条件的变化情况,之后应用综合污染指数法筛选出渤海湾近岸海域的2003、2010、2011年的主要污染指标,并探讨了因岸线变化引起的渤海湾近岸海域主要污染指标污染范围的变化情况.结果表明,与2003年相比,2010年渤海湾的各个港口都有了很大程度的扩张,部分滩涂地区变成陆地;渤海湾余流场的主要变化是天津港北部存在的逆时针余流消失,天津港南部至黄骅港北部间的逆时针沿岸余流有所减小;渤海湾2003、2010和2011的水质的主要污染指标为营养盐类、重金属类的Zn和Pb;渤海湾近岸海域主要污染指标的污染范围有所扩大,污染物高值区有向渤海湾东北海域扩展的趋势.
In order to study the influence of Bohai Bay coastline on the water quality of the offshore area, this study firstly expounds the changes of the Bohai Bay coastline in 2003, 2010 and 2011, and studies the hydrodynamic conditions of the Bohai Bay caused by the change of shoreline by numerical simulation After that, the main pollution indexes of 2003, 2010 and 2011 in the coastal area of Bohai Bay were screened out by the method of comprehensive pollution index, and the changes of the pollution range of the main pollution indexes in the offshore area of Bohai Bay due to the change of shoreline were discussed The results show that compared with 2003, all the ports in the Bohai Bay in 2010 have been greatly expanded, and some of the tidal flat areas have become land. The main change in the remaining flow field in the Bohai Bay is the counterclockwise surplus existing in the northern part of Tianjin Port Flow disappeared, and the residual flow at the counter-clockwise coast from the southern part of Tianjin Port to the northern part of Huanghua Port decreased. The main pollutants of water quality in Bohai Bay in 2003, 2010 and 2011 were Zn and Pb of nutrients and heavy metals; The scope of pollution of major pollution indicators of the coastal area has been expanded, and the high-value areas of pollutants have the tendency of expanding to the northeast of Bohai Bay.