SPATIAL AND TEMPORAL DISTRIBUTION PATTERN OF SUSPENDED SEDIMENT IN THE JINGHAI BAY AND ADJACENT WATERS, SHANDONG PENINSULA
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摘要: 悬浮泥沙是研究近海海底沉积作用的一个重要指标,也是研究河口附近海域泥沙通量平衡的重要依据。通过对靖海湾及其附近海域10个站位进行调查,计算了各站不同层位的悬沙浓度,分析了该海域悬浮泥沙的水平和垂直分布特征,并结合测流资料,探讨了该海域的悬沙输运特征。结果表明:时间上,靖海湾及其附近海域悬沙浓度在潮流作用下,具有明显的潮周期变化;空间上,潮周期的平均悬沙浓度呈现西南低、东北高,表层低、中层次之、底层最高的分布规律;通过对悬浮泥沙单宽输沙率的研究表明,在靖海湾西侧临近海域,泥沙运动呈现涨潮优势沙,向西侧陆域和西北侧五垒岛湾内净输沙,在长会口内部及口门附近海域,泥沙运动呈现落潮优势沙,泥沙净向海输运。Abstract: Suspended sediment concentration (SSC), as the basis for sediment flux balance, is an important parameter in marine sedimentology. Based on the survey and hydrological observations at 10 stations in the Jinghai Bay and its adjacent waters, SSC in different layers is calculated, and the SSC horizontal and vertical distribution patterns and the transportation of suspended sediment are analyzed. Data show that SSC changes with the variation of tide current and runoff, and increases from the surface to the bottom and from southwest to northeast. The mechanism of longitudinal suspended sediment transport shows that sediments move toward the land and Wuleidao Bay where flood tide dominates, but move towards the sea near the Changhuikou area where ebb tide dominants.
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