【摘要】 利用对应分析方法对 1 989年 5、8月黄河水下三角洲 48个站位的表层沉积物 ,采用沉积物粒度参数 :中值粒径 (Mz)、标准偏差 (δI)、偏态 (SKI)、峰态(KG)作为变量进行统计分析 ,共划分出 3种沉积物类型 (A1,A2 ,A3群 ) ,对应 3种沉积环境。分析结果表明 ,Mz与 KG为负相关关系 ;与δI总趋势呈正相关 ,但部分样品不适合此规律 ;与 SKI亦呈无规律性 ,反映出黄河具正常水流和浊流两种沉积环境特征的独特性。洪、枯两个季节 3大关联群分布的差异 ,反映出不同季节在河流与海洋动力相互作用下 ,沉积物呈季节交替性向外运移的趋势。更多还原

【Abstract】 About 96 sediment samples were collected from estuarine area of the Huanghe River (Yellow River) in May/Aug., 1989. Based on the grain size analysis, the parametrs:Meansize(Mz), Standard Deviation(δ I), Skewness(SK i), and Kurtosis(KG) were chosen as the R mode factors to compute by means of Correspondence Analysis method. The results showed there were three clusters reflecting three coditions of sediment dynamic enviroment. This aproach emphasizes the effects of the transportting fluid on sediment grains, and provids a basis for interpreting hydraulc conditions and tracing the directions of the suspended sediment transportment from the relative cluster distribution patterns in the area, and gives a primary analysis on the cluster distribution patterns and its indication of sediment transport directions in both wet and dry seasons.更多还原