连云港南部近岸带冲淤变化分析

选取连云港南部近岸带南北不同岸滩 4个典型断面的样品点进行主成分分析 ,得出研究区控制泥沙交换和冲淤变化的主要动力因素为潮流作用和潮流波浪混合作用。据此 ,尝试建立冲淤变化的协方差数学模型 ,经过对计算结果显著性分析和实证检验得出研究区域的冲淤趋势为“整体冲淤平衡 ,局部略有冲刷” ,从北到南 ,依次出现淤积平衡、冲淤平衡、冲刷平衡三种较为稳定的自然冲淤环境。

Accretion-erosion analysis of the inshore belt of Southern Lianyungang Harbor

Utilizing the main composition analysis,the authors have obtained finding a finding that the dynamic control factors of the sediment in the research district are both the tide action and the tide-wave mixed action.The authors have developed a covariance numerical model of sediment exchange and accretion-erosion change for the first time.With the result of the covariance model and the field measured data,the authors find the accretion and erosion tendency in the research district,which is "an accretion-erosion equilibrium on the whole and a slight erosion in part". A relatively stable phenomenon of the accretion equilibrium,the accretion-erosion equilibrium and the erosion equilibrium can be seen in order from the north to the south in the research district.