海洋工程影响下莱州湾海域水动力环境变化特征

本文利用MIKE21FM数值模拟软件模拟了2000年和2014年莱州湾海域的水动力变化。结果表明由于海洋工程的建设，莱州湾内地形和浅滩发生变化，导致2014年湾内整体潮流流速较2000年减小，流向发生一定偏转；在NE向定常风驱动下对比2000年和2014年模拟海流结果可知变化幅度在1~3 cm/s内，莱州湾整体表层海水运动受岸线变化影响较小；纳潮量减少0.1788 km3，为2000年的3.2%；半水交换时间由27.5 d增加到29 d，工程建设对莱州湾水交换影响相对较小。

The hydrodynamic environment variability of Laizhou bay response to the marine engineering

This article simulates the hydrodynamic environment of the Laizhou bay during 2000 and 2014 by MIKE21FM numerical simulation method.Compared with 2000, the results show that the marine engineering cause the change of topography and shallows of the Laizhou bay, which leads to the tidal current slowing down and the direction turning in 2014;the ocean current changed in the range of 1 cm/s to 3 cm/s with the constant northeast wind, the variation of coastline had little impact on the flow of the surface sea water; the storage capacity of tidal was 0.1788 km3, 3.2% decrease in 2000;the half water exchange time increased from 27.5 days to 29 days, which indicates the construction had little influence on the water exchange.