长江口瑞丰沙嘴演变分析  

ANALYSIS ON THE REVOLUTION OF RUIFENGSHAN SPIT IN YANGTZE ESTUARY

作　　者：郭建强[1] 茅志昌[1] 

机构地区：[1]华东师范大学河口海岸学国家重点实验室河口海岸科学研究院,上海200062

出　　处：《海洋湖沼通报》2008年第1期17-24,共8页Transactions of Oceanology and Limnology

基　　金：国家自然科学基金重大项目(40576042)

摘　　要：利用1958～2005年长江口地形图及实测水、沙资料,对瑞丰沙嘴的产生、演变过程进行了分析。研究结果表明:瑞丰沙嘴形成于20世纪50年代后期,丰富的泥沙来源使瑞丰沙嘴迅速下延扩大,南港演变为"W"型复式河槽,"外沙里泓"效应显现。2001年瑞丰沙嘴中部受冲刷分裂成上、下2个沙体。为确保长兴岛南岸工业区对长兴南小泓的水深要求,应采取措施保持瑞丰沙嘴的稳定。Bathymetric maps from 1958 to 2005 and hydrographic and sediment data are used to analyze the form and revolution of Ruifengsha Spit. The results show that Ruifengsha Spit formed in the late fifty＇s in 20th century. Abundant provided sediment made Ruifengsha Spit grow fast. The South Channel has turn to complicated channel with ＂W＂-typed and then out --bar and inner-stream effect appears. Ruifengsha Spit was eroded two parts in 2001： anterior spit and posterior spit. To keep the water deep in south Changxing channel and serve the industrial park along south bank of Changxing Island, measures should be taken to maintain the stability of Ruifengsha Spit.

关 键 词：长江口 瑞丰沙嘴 冲淤 外沙里泓 

分 类 号：P737.12[天文地球—海洋地质]