| 摘要: |
| 根据大通站1950–1985 年的水、沙实测资料，运用统计分析方法研究长江人河口区水、沙通量的季节性变化、年际变化以及水、沙通量之间的关系。结果表明，长江人河口区的水沙通量有明显的季节性变化，其中沙通量的变化更为显著；丰水年很少连续出现，枯水年有75%以连续两年的形式出现；多沙年的出现形式有1年出现一次的，也有2–3年出现的，少沙年基本上以连续2–3年的形式出现；水沙通量间的相关性较差，其中细颗粒泥沙通量与水通量间基本上无相关性。 |
| 关键词: 长江 河口 径流通量 悬沙通量 |
| DOI：10.11693/hyhz200003009009 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目，49736220号 |
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| PATTERNS OF VARIATIONS IN THE WATER AND SEDIMENT FLUXES FROM THE CHANGJIANG RIVER TO THE ESTUARY |
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SHEN Huan-ting1, ZHANG Chao2, MAO Zhi-chang2
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1.State Key Lab of Estuarine and Coastal Research, East China Normal University, Shanghai00062;2.State Key Lab of Estuarine and Coastal Research, East China Normal University, Shanghai200062
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| Abstract: |
| According to the field measurements of runoff and sediment at the Datong hydrological station in the period from 1950 to 1985, a statistical approach is applied to study the seasonal ad yearly variations in water and sediment fluxes to the estuary and their relationship. The result shows that: (1) an apparent seasonal variation of water and sediment fluxes exists, especially the suspended sediment flux; (2) the flood years seldom occur in succession and 75% of the dry years takes place every two years; (3) the recurrence interval of high sediment years happens once a year or 2–3 years while that of low sediment years basically every three years; (4) there is a relatively poor correlation between water and sediment fluxes. Moreover, there is almost no correlation between fine-grained sediment flux and water flux. |
| Key words: Changjiang River, Estuary, Water flux, Suspended sediment flux |
