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中文摘要：
根据海图资料统计了1979年、1988年、1998年和2009年大连湾及3个内湾岸线和海域面积变化情况,并运用MIKE21软件建立这4年的潮流场模型。然后,基于潮流场数值模拟的数据计算了1979年和2009年大连湾及3个内湾动态纳潮量,并与用潮差和面积计算的静态纳潮量比较,明确对于水位与潮滩面积关系复杂、海域面积较小的海湾应选用动态纳潮量方法。最后,计算了1988年和1998年3个内湾的动态纳潮量,发现近30年间的围填海工程使得大连湾纳潮量减少15%,3个内湾纳潮量均减少50%。
英文摘要：
In this paper,maritime area and coastline length changes of the Dalian Bay and three inner bays are calculated based on charts in 1979,1988,1998 and 2009,and tidal numerical simulation models are built using MIKE21.Then,the dynamic tidal prism water quality of the Dalian Bay and inner bays in 1979 and 2009 is calculated,and the calculation results are compared with the static tidal prism which is calculated by the tidal range and maritime area.When the relationship between the water level and tidal flat area is complex,or when the bay area is smaller,the dynamic tidal prism calculation method is more suitable for the use.In the end,the dynamic tidal prism of 3 inner bays in 1988 and 1998 is calculated,and the results show that the tidal prism water quality of the Dalian Bay decreases by 15 % and those of its 3 inner bays decrease by 50 %,which are resulted from the reclamation in the past three decades.
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