【摘要】 本文根据浙江椒江、江苏灌河以及长江等河口的实测水文泥沙资料,分析河口锋及其对河口泥沙淤积的影响。文章指出,因河口锋形成机理上的差异,锋面可随潮移动,世可稳定不动.但其派生的锋区环流和锋区细颗粒泥沙絮凝沉积.能促使河口泥沙汇集,发育河口最大浑浊带。锋区活动范围是河口泥沙淤积的重要部位,它所造成的泥沙淤积,是河口拦门沙发育的重要原因。更多还原

【Abstract】 The characteristics of estuarine fronts and their effects on sediment deposition in estuaries are analysed on the basis of hydrographic observed at Jiaojiang, Guanhe and Yangtse estuaries. It was found that owing to different formation mechanisms, estuarine fronts may move with tides or remain static, while by-produced circulating currents, in combination with the floc-culation deposition of fine sediments, bring the estuarine sediment to convergence and get max-mum turbid zone developed. The active range of estuarine fronts usually envelop deposition zones, which is an important factor in the development of sand bars at estuaries.更多还原