摘要
长江口北支为喇叭口型中潮河口,在径流—潮流共同作用下,塑造了典型的心滩、边滩、沙嘴、潮流脊和潮汐汊道等地貌形态。本文根据所采集的长江口北支底质的粒度分析结果,利用数学地质方法对粒度参数进行对应分析;并在此基础上分析北支的沉积特征及沉积环境,揭示其沉积作用的动力机制。
The North Branch of Changiiang Estuary is a mesotidal estuary. Its development is greatly controlled by the topographic factors and hydrodynamic conditions. The tidal currents form the complex sedimentary characteristics and the subaqueous morphology, such as the tidal sand ridges. Based on the analytic result of sediment size, this paper applies the multi-element corresponding analysis to divide the different dynamic sediment environntent areas and reveal the mechanism of sedimentation.
关键词
长江口北支
对应分析
粒度特征
沉积环境
沉积物
the North Branch of Changjiang Estuary, correspondence analysis, grain size characteristics, sedimentary environment
