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一、长江河口与三角洲海岸的基本特徵1.长江河口及三角洲海岸概况长江三角洲西起江苏镇江.北抵扬州、泰县,海安青墩:东面与南面分别濒黄海、东海与杭州湾,面积约五万平方公里。长江口迳流量大,多年平均迳流量为29200米~3/秒,实测最大洪峰流量为92600米~3/秒,年平均迳流量达9200亿米~3,年输沙量约5亿吨].潮流也较强,属半日潮河口。河口(中浚)最大潮差为4.62米,洪季大潮涨潮总流量为50亿米~3。枯水期潮区界可达距河口621公里的安徽省大通,潮流界位于距河口319
First, the Yangtze River estuary and the coast of the basic features of the delta 1. The Yangtze River estuary and delta coast Overview The Yangtze River Delta from Zhenjiang in Jiangsu Province. North arrived in Yangzhou, Tai County, Hoi An Pier: East and South were close to the Yellow Sea, the East China Sea and Hangzhou Bay, About 50,000 square kilometers. The flow rate of the Yangtze River estuary is large, and the average annual flow rate is 29200m ~ 3 / s. The maximum measured peak flow is 92,600m ~ 3 / s, with an average annual flow of 920,000m ~ 3 and an annual sediment discharge of about 500m tons] The trend is also strong, which is half tide estuary. Estuary (Jun) in the tidal range of 4.62 meters, the flood season tidal surge of the total flow of 5 billion meters ~ 3. In the dry season, the tidal zone boundary can reach 629 kilometers away from the estuary in Datong, Anhui Province, where the tidal current is located at 319