钱塘江下游河段潮流和沉积特征

THE TIDAL AND SEDIMENTARY FEATURES OF THE LOWER REACH OF THE QIANTANJIANG RIVER

钱塘江下游河段水文泥沙测量、有孔虫和重矿物组合等的分析表明,涨潮流可以将海区沉积物向河口及其上游方向搬运,这为解释冰后期海进河床充填层序提供了对比依据。钱塘江河口沙坎主要物质来自长江和钱塘江。

The field investigation of hydrology and analyses of sediments,foraminifera and heavyminerals in the lower reach of the Qiantangjiang River show that sediments in the sea area could be transported into the estuary and its upstream by flood tidal current。These provideus an interpretation for the formation of post-glacial transgressive river-channel fillingsequence,and further support the viewpoint that the main source of sediments of the sandbar in the Qiantangjiang estuary is from the Yangtze River and the Qiantangjiang River。