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飞雁滩是1964年1月至1976年5月黄河尾闾由刁口流路入海形成的黄河亚三角洲。自1976年黄河改走清水沟入海后,飞雁滩岸滩发生强烈侵蚀后退。以20世纪70年代开始的地形固定断面观测资料、2004年4月现场水文泥沙及沉积物取样资料为基础,地形剖面后退距离作为统计参数,并根据实测资料计算了潮流和波浪底摩阻流速的横向分布,从动力分布和沉积物结构方面解释了飞雁滩典型剖面的变化特征。30 a来飞雁滩岸滩地形剖面经历了“快速后退侵蚀——慢速调整——波动触发”的变化过程,这也正是其三角洲前缘侵蚀逐渐消失过程。沉积物抗冲性强弱是剖面蚀退速度变化的主要原因,水动力条件的变化改变了不同阶段的地形剖面最大蚀退量水深范围与闭合深度。风暴潮仍是今后海滩地形剖面演变的触发动力。
Feiyan beach is from January 1964 to May 1976 the tail of the Yellow River from Diaokou flow into the sea to form the Yellow River delta. Since the Yellow River changed its way into Qingshuigou in 1976, there was a strong erosion of Feiyantan Beach. Based on the observation data of the fixed section of the terrain since the 1970s, the sampling data of the hydrological sediment and sediment in April 2004 and the regression distance of the terrain profile as the statistical parameters, the tidal current and friction velocities at the bottom of waves were calculated based on the measured data The lateral distribution of the typical sections of Feiyantan Beach is explained from the dynamic distribution and sediment structure. The topography of the levee beach coast in the past 30 years has undergone a process of rapid reverse erosion, slow adjustment and fluctuation triggering, which is also the gradual disappearance of erosion in the delta front. The impact of sediment intensity is the main reason for the change of eclogite velocity. The change of hydrodynamic conditions changes the maximum ebb range and closure depth of the topographic profile in different stages. Storm surge is still the driving force for the evolution of beach topography in the future.