地理学报 ›› 1992, Vol. 47 ›› Issue (2): 108-118.doi: 10.11821/xb199202002

• 论文 • 上一篇    下一篇

长江口及其邻近海域粘性泥沙的数量与输移

林承坤   

  1. 南京大学大地海洋科学系
  • 出版日期:1992-03-15 发布日期:1992-03-15
  • 基金资助:
    国家自然科学基金资助项目

THE AMOUNT AND TRANSPORT OF COHESIVE SEDIMENTS IN THE CHANGJIANG RIVER ESTUARY AND ITS NEAR SEA

Lin Chengkun   

  1. Department of Geo and Ocean Sciences, Nanjing University
  • Online:1992-03-15 Published:1992-03-15

摘要: 长江口的粘性泥沙有89.6%以上来源于长江补给区,一部分来源于废黄河与黄海补给区。长江补给区的粘性泥沙的汇入百分数及其输沙量两者均为已知,据此计算出长江口粘性泥沙沉积量为4.554×107t/a,从长江口输向杭州湾与东海补给区的粘性泥沙输沙量为2.247×107t/a,废黄河与黄海补给区输向长江口的输沙量为2.730×107t/a。长江口粘性泥沙的数量同1915年与1963年实测地形图比较量算的数量为4.469X107t/a基本相符。

关键词: 粘性泥沙, 法方程, 泥沙输移, 长江口

Abstract: In the light of regional physiographic characteristics and their effect on clay mineral composition of cohesive sediment (d<0.005mm), the cohesive sediments in the Changjiang River Estuary are found to come from different source regions, namely, the Changjiang River upstream of Jiangyin (CR,x1), the Abandoned Yellow River Delta and northwestern Yellow Sea (AYRDYS, x2), and the Hangzhou Bay and northwestern part of East China Sea (HBECS, x3).

Key words: Cohesive, sediments Normal equation, Sediment transport, Changjiang River estuary