海平面上升对黄浦江风暴潮水位影响研究

Study on influence of sea level rise on storm tidal levels of Huangpu River

为了模拟海平面上升后的风暴潮位对上海市防洪的影响,建立了黄浦江平面二维潮流-风暴潮数学模型。介绍了模型控制方程、定解条件以及主要参数,并对模型进行了验证。研究表明,黄浦江风暴潮高水位从上游向下逐渐增加;海平面上升后,与风暴潮和天文潮产生非线性作用,引起超高水位,使风暴潮最高水位的增加值大于海平面上升值;超高水位发生的位置和大小与风暴潮特性和海平面上升值有关。研究结果可为上海市的城市防洪提供理论依据。

In order to simulate the influence of tidal level of Huangpu River after sea level rise on flood control of Shanghai City,a two- dimensional mathematical model of tide- storm tide is established. The governing equation,solution condition and main parameters of the model are introduced and the model is verified. The research results show that the high water levels of storm tides increases gradually from upper to lower reaches of Huangpu River; after the sea level rise,the nonlinear co- action of storm tide and astronomical tides will induce super high water levels,so the increment value of the highest water level induced by storm tide is higher than the sea level rise. The locations and sizes of super high levels are related with the characteristics of storm tide and sea level rise. The results can provide theoretical basis for Shanghai urban flood control.